Categories: First Year Second Semester (1-2)

JNTU Kakinada (JNTUK) B-Tech First Year Second Semester (1-2) R161208 ELECTRICAL CIRCUIT ANALYSIS Electrical and Electronics Engineering R16 Regulation May 2018 Question Paper

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS (Electrical and Electronics Engineering

Electrical and Electronics Engineering)

1. Question Paper consists of two parts (Part-A and Part

Answering the question in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

State and explain Kirchoff?s Laws.

Define the following terms with example

Find the effective value of the inductance for the following connections

Figure 1(c)Calculate the current drawn by impedance. Z = (30- j70) ? when voltage, V = 120

A series RLC circuit has the following parameter values R = 10 ?, L = 0.01 H and

F. Find the Q factor of the circuit at resonance.

Is super position valid for power? Substantiate your answer.

PART ?B

In the network shown in figure 2(a), determine the voltage V

b

which results in a

zero current through the (2+j3) ? impedance branch.

Figure 2(a)Determine the voltage V using source transformation and simplification

2(b).

Figure 2(b)R16

1 of 3

2?

j3 ?

4?

j5 ? 6?

V

b

6?

6A

4?

V

__

+

8V

I B. Tech II Semester Regular/Supplementary Examinations, April/May – 2018

Max. Marks: 70

Part-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (3M) (2M)

following connections as shown (3M)

when voltage, V = 120 (2M)

= 0.01 H and (2M) (2M)

which results in a (9M)

n and simplification for the (5M)

SET – 1

V

__

+

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS (Electrical and Electronics Engineering

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question in

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) State and explain Kirchoff?s Laws

b) Define the following terms(i) Graph of a network (ii) Oriented graph

c) Find the effective value of the inductance for the

in figure 1(c).

d) Calculate the current drawn by impedance. Z = (30

?0

0

is applied across it.

e) A series RLC circuit has the following parameter values R = 10

C = 10 ?F. Find the Q factor of the circuit at resonance.

f) Is super position valid for power? Substantiate your answer

2. a) In the network shown in

zero current through the (2+j3) b)Determine the voltage V using source transformatio

circuit shown in figure 2(b)

5?

30

3 ?

3 ?

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

1. Question Paper consists of two parts (Part-A and Part

Answering the question in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

State and explain Kirchoff?s Laws.

Define the following terms with example

Find the effective value of the inductance for the following connections

Figure 1(c)Calculate the current drawn by impedance. Z = (30- j70) ? when voltage, V = 120

A series RLC circuit has the following parameter values R = 10 ?, L = 0.01 H and

F. Find the Q factor of the circuit at resonance.

Is super position valid for power? Substantiate your answer.

PART ?B

In the network shown in figure 2(a), determine the voltage V

b

which results in a

zero current through the (2+j3) ? impedance branch.

Figure 2(a)Determine the voltage V using source transformation and simplification

2(b).

Figure 2(b)R16

1 of 3

2?

j3 ?

4?

j5 ? 6?

V

b

6?

6A

4?

V

__

+

8V

I B. Tech II Semester Regular/Supplementary Examinations, April/May – 2018

Max. Marks: 70

Part-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (3M) (2M)

following connections as shown (3M)

when voltage, V = 120 (2M)

= 0.01 H and (2M) (2M)

which results in a (9M)

n and simplification for the (5M)

SET – 1

V

__

+

Code No: R161208

3. a) For the network shown in

Using the tie-set schedule obtain the loop equations

b) For the network shown in

4. a) A cast steel ring is wound with 500 turns. The cross

m

2

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

flux of f = 4x 10

-4

wb. (b) Determine the values of

these conditions. Assume H for cast steel = 170 At/m.

b) Draw the dotted equivalent circuit for the net work shown in below fig

find the equivalent inductive reactance.

5. a) Two coils of impedance 25.23

across a 230V, 50Hz supply. Find the

active power.

b) Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero.

R

1

V

shown in figure 3(a), draw the graph and write a tie-

set schedule obtain the loop equations.

Figure 3(a)For the network shown in figure 3(b), draw the graph and show some possible trees

Figure 3(b)A cast steel ring is wound with 500 turns. The cross ? section of the core is 2 x 10

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

wb. (b) Determine the values of ? and ?

r

for the material under

these conditions. Assume H for cast steel = 170 At/m.

equivalent circuit for the net work shown in below fig

find the equivalent inductive reactance.

Figure 4(b)Two coils of impedance 25.23 ? 37

0

and 18.65 ? 68

0

ohms are connected in series

Hz supply. Find the total impedance, current, power factor, and

Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero.

2 of 3

R16

R

2

1

C

1

L

1

I

-set schedule. (10M)

draw the graph and show some possible trees. (4M)

section of the core is 2 x 10

-3

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

for the material under (8M)

equivalent circuit for the net work shown in below figure 4(b). and (6M)

nnected in series

total impedance, current, power factor, and (7M)

Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero. (7M)

SET – 1

R

3

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS (Electrical and Electronics Engineering

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question in

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) State and explain Kirchoff?s Laws

b) Define the following terms(i) Graph of a network (ii) Oriented graph

c) Find the effective value of the inductance for the

in figure 1(c).

d) Calculate the current drawn by impedance. Z = (30

?0

0

is applied across it.

e) A series RLC circuit has the following parameter values R = 10

C = 10 ?F. Find the Q factor of the circuit at resonance.

f) Is super position valid for power? Substantiate your answer

2. a) In the network shown in

zero current through the (2+j3) b)Determine the voltage V using source transformatio

circuit shown in figure 2(b)

5?

30

3 ?

3 ?

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

1. Question Paper consists of two parts (Part-A and Part

Answering the question in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

State and explain Kirchoff?s Laws.

Define the following terms with example

Find the effective value of the inductance for the following connections

Figure 1(c)Calculate the current drawn by impedance. Z = (30- j70) ? when voltage, V = 120

A series RLC circuit has the following parameter values R = 10 ?, L = 0.01 H and

F. Find the Q factor of the circuit at resonance.

Is super position valid for power? Substantiate your answer.

PART ?B

In the network shown in figure 2(a), determine the voltage V

b

which results in a

zero current through the (2+j3) ? impedance branch.

Figure 2(a)Determine the voltage V using source transformation and simplification

2(b).

Figure 2(b)R16

1 of 3

2?

j3 ?

4?

j5 ? 6?

V

b

6?

6A

4?

V

__

+

8V

I B. Tech II Semester Regular/Supplementary Examinations, April/May – 2018

Max. Marks: 70

Part-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (3M) (2M)

following connections as shown (3M)

when voltage, V = 120 (2M)

= 0.01 H and (2M) (2M)

which results in a (9M)

n and simplification for the (5M)

SET – 1

V

__

+

Code No: R161208

3. a) For the network shown in

Using the tie-set schedule obtain the loop equations

b) For the network shown in

4. a) A cast steel ring is wound with 500 turns. The cross

m

2

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

flux of f = 4x 10

-4

wb. (b) Determine the values of

these conditions. Assume H for cast steel = 170 At/m.

b) Draw the dotted equivalent circuit for the net work shown in below fig

find the equivalent inductive reactance.

5. a) Two coils of impedance 25.23

across a 230V, 50Hz supply. Find the

active power.

b) Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero.

R

1

V

shown in figure 3(a), draw the graph and write a tie-

set schedule obtain the loop equations.

Figure 3(a)For the network shown in figure 3(b), draw the graph and show some possible trees

Figure 3(b)A cast steel ring is wound with 500 turns. The cross ? section of the core is 2 x 10

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

wb. (b) Determine the values of ? and ?

r

for the material under

these conditions. Assume H for cast steel = 170 At/m.

equivalent circuit for the net work shown in below fig

find the equivalent inductive reactance.

Figure 4(b)Two coils of impedance 25.23 ? 37

0

and 18.65 ? 68

0

ohms are connected in series

Hz supply. Find the total impedance, current, power factor, and

Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero.

2 of 3

R16

R

2

1

C

1

L

1

I

-set schedule. (10M)

draw the graph and show some possible trees. (4M)

section of the core is 2 x 10

-3

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

for the material under (8M)

equivalent circuit for the net work shown in below figure 4(b). and (6M)

nnected in series

total impedance, current, power factor, and (7M)

Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero. (7M)

SET – 1

R

3

Code No: R161208

6. a) For the circuit shown in figure 6(a). (i) Determine the KVL equations. (ii) Find the two loop currents I

1

, and I

2(iii) Find the power supplied by the source and the power dissipated in each resistor.

Figure 6(a) (7M)

b) A coil of 20 ohm resistance and an inductance of 0.2 H are connected in parallel

with a capacitor of 100 ?F. Determine the resonant frequency and the input

impedance at resonance. (7M)

7. a) State and explain compensation theorem. (7M)

b) Find the value of R in the circuit shown in figure 7(b) such that maximum power

transfer takes place. What is the amount of this power?

Figure 7(b) (7M)

3 of 3

SET – 1

R16

+

–

3?

-j5?

-j2?

1?

j2?

2?

10

0

0 ? V

1? 5?

R

1? 4V

6V 2?

+

–

+

–

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS (Electrical and Electronics Engineering

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question in

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) State and explain Kirchoff?s Laws

b) Define the following terms(i) Graph of a network (ii) Oriented graph

c) Find the effective value of the inductance for the

in figure 1(c).

d) Calculate the current drawn by impedance. Z = (30

?0

0

is applied across it.

e) A series RLC circuit has the following parameter values R = 10

C = 10 ?F. Find the Q factor of the circuit at resonance.

f) Is super position valid for power? Substantiate your answer

2. a) In the network shown in

zero current through the (2+j3) b)Determine the voltage V using source transformatio

circuit shown in figure 2(b)

5?

30

3 ?

3 ?

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

1. Question Paper consists of two parts (Part-A and Part

Answering the question in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

State and explain Kirchoff?s Laws.

Define the following terms with example

Find the effective value of the inductance for the following connections

Figure 1(c)Calculate the current drawn by impedance. Z = (30- j70) ? when voltage, V = 120

F. Find the Q factor of the circuit at resonance.

Is super position valid for power? Substantiate your answer.

PART ?B

In the network shown in figure 2(a), determine the voltage V

b

which results in a

zero current through the (2+j3) ? impedance branch.

Figure 2(a)Determine the voltage V using source transformation and simplification

2(b).

Figure 2(b)R16

1 of 3

2?

j3 ?

4?

j5 ? 6?

V

b

6?

6A

4?

V

__

+

8V

I B. Tech II Semester Regular/Supplementary Examinations, April/May – 2018

Max. Marks: 70

Part-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (3M) (2M)

following connections as shown (3M)

when voltage, V = 120 (2M)

= 0.01 H and (2M) (2M)

which results in a (9M)

n and simplification for the (5M)

SET – 1

V

__

+

Code No: R161208

3. a) For the network shown in

Using the tie-set schedule obtain the loop equations

b) For the network shown in

4. a) A cast steel ring is wound with 500 turns. The cross

m

2

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

flux of f = 4x 10

-4

wb. (b) Determine the values of

these conditions. Assume H for cast steel = 170 At/m.

b) Draw the dotted equivalent circuit for the net work shown in below fig

find the equivalent inductive reactance.

5. a) Two coils of impedance 25.23

across a 230V, 50Hz supply. Find the

active power.

b) Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero.

R

1

V

shown in figure 3(a), draw the graph and write a tie-

set schedule obtain the loop equations.

Figure 3(a)For the network shown in figure 3(b), draw the graph and show some possible trees

Figure 3(b)A cast steel ring is wound with 500 turns. The cross ? section of the core is 2 x 10

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

wb. (b) Determine the values of ? and ?

r

for the material under

these conditions. Assume H for cast steel = 170 At/m.

equivalent circuit for the net work shown in below fig

find the equivalent inductive reactance.

Figure 4(b)Two coils of impedance 25.23 ? 37

0

and 18.65 ? 68

0

ohms are connected in series

Hz supply. Find the total impedance, current, power factor, and

Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero.

2 of 3

R16

R

2

1

C

1

L

1

I

-set schedule. (10M)

draw the graph and show some possible trees. (4M)

section of the core is 2 x 10

-3

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

for the material under (8M)

equivalent circuit for the net work shown in below figure 4(b). and (6M)

nnected in series

total impedance, current, power factor, and (7M)

Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero. (7M)

SET – 1

R

3

Code No: R161208

6. a) For the circuit shown in figure 6(a). (i) Determine the KVL equations. (ii) Find the two loop currents I

1

, and I

2(iii) Find the power supplied by the source and the power dissipated in each resistor.

Figure 6(a) (7M)

b) A coil of 20 ohm resistance and an inductance of 0.2 H are connected in parallel

with a capacitor of 100 ?F. Determine the resonant frequency and the input

impedance at resonance. (7M)

7. a) State and explain compensation theorem. (7M)

b) Find the value of R in the circuit shown in figure 7(b) such that maximum power

transfer takes place. What is the amount of this power?

Figure 7(b) (7M)

3 of 3

SET – 1

R16

+

–

3?

-j5?

-j2?

1?

j2?

2?

10

0

0 ? V

1? 5?

R

1? 4V

6V 2?

+

–

+

–

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS (Electrical and

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) Explain source transformation technique

b) Define the following terms(i) Graph of the Network and Sub(ii) Rank of graph.

c) Find the effective value of the inductance for the following connections

in figure 1(c).

d) A current I = 10?30

0

flows through an impedance, Z = 20

average power delivered to the impedance

e) A two element series circuit has a current of 4

when the voltage of 200 sin (2000t+50

Determine the values of elements.

f) State Maximum power transfer theorem

2. a) Determine the node voltages V1

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

Note: 1. Question Paper consists of two parts (Part-A and Part-

Answering the questions in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

Explain source transformation technique.

Define the following terms.

Graph of the Network and Sub graph.

effective value of the inductance for the following connections

Figure 1(c)flows through an impedance, Z = 20? – 22

0

average power delivered to the impedance.

ries circuit has a current of 4 cos (200t + 13.2

0

) amp flowing

when the voltage of 200 sin (2000t+50

0

) volts is applied across its terminals.

Determine the values of elements.

State Maximum power transfer theorem.

PART -B

voltages V1, V

2

, and V

3

for the circuit shown in figure

figure 2(a)R16

1 of 4

I B. Tech II Semester Regular/Supplementary Examinations, April/May – 2018

Max. Marks: 70

-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (2M) (3M)

effective value of the inductance for the following connections as shown (2M)

? find the (2M)

) amp flowing

is applied across its terminals. (3M) (2M)

ure 2(a). (7M)

SET – 2

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS (Electrical and Electronics Engineering

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question in

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) State and explain Kirchoff?s Laws

b) Define the following terms(i) Graph of a network (ii) Oriented graph

c) Find the effective value of the inductance for the

in figure 1(c).

d) Calculate the current drawn by impedance. Z = (30

?0

0

is applied across it.

e) A series RLC circuit has the following parameter values R = 10

C = 10 ?F. Find the Q factor of the circuit at resonance.

f) Is super position valid for power? Substantiate your answer

2. a) In the network shown in

zero current through the (2+j3) b)Determine the voltage V using source transformatio

circuit shown in figure 2(b)

30

3 ?

3 ?

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

1. Question Paper consists of two parts (Part-A and Part

Answering the question in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

State and explain Kirchoff?s Laws.

Define the following terms with example

Find the effective value of the inductance for the following connections

Figure 1(c)Calculate the current drawn by impedance. Z = (30- j70) ? when voltage, V = 120

F. Find the Q factor of the circuit at resonance.

Is super position valid for power? Substantiate your answer.

PART ?B

In the network shown in figure 2(a), determine the voltage V

b

which results in a

zero current through the (2+j3) ? impedance branch.

Figure 2(a)Determine the voltage V using source transformation and simplification

2(b).

1 of 3

2?

j3 ?

4?

j5 ? 6?

V

b

6?

6A

4?

V

__

+

8V

I B. Tech II Semester Regular/Supplementary Examinations, April/May – 2018

Max. Marks: 70

Part-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (3M) (2M)

following connections as shown (3M)

when voltage, V = 120 (2M)

= 0.01 H and (2M) (2M)

which results in a (9M)

n and simplification for the (5M)

SET – 1

V

__

+

Code No: R161208

Using the tie-set schedule obtain the loop equations

b) For the network shown in

m

2

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

flux of f = 4x 10

-4

wb. (b) Determine the values of

these conditions. Assume H for cast steel = 170 At/m.

b) Draw the dotted equivalent circuit for the net work shown in below fig

find the equivalent inductive reactance.

5. a) Two coils of impedance 25.23

across a 230V, 50Hz supply. Find the

active power.

b) Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero.

1

V

shown in figure 3(a), draw the graph and write a tie-

set schedule obtain the loop equations.

Figure 3(a)For the network shown in figure 3(b), draw the graph and show some possible trees

Figure 3(b)A cast steel ring is wound with 500 turns. The cross ? section of the core is 2 x 10

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

wb. (b) Determine the values of ? and ?

r

for the material under

these conditions. Assume H for cast steel = 170 At/m.

equivalent circuit for the net work shown in below fig

find the equivalent inductive reactance.

Figure 4(b)Two coils of impedance 25.23 ? 37

0

and 18.65 ? 68

0

ohms are connected in series

Hz supply. Find the total impedance, current, power factor, and

Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero.

2 of 3

R16

R

2

1

C

1

L

1

I

-set schedule. (10M)

draw the graph and show some possible trees. (4M)

section of the core is 2 x 10

-3

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

for the material under (8M)

equivalent circuit for the net work shown in below figure 4(b). and (6M)

nnected in series

total impedance, current, power factor, and (7M)

Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero. (7M)

SET – 1

R

3

Code No: R161208

6. a) For the circuit shown in figure 6(a). (i) Determine the KVL equations. (ii) Find the two loop currents I

1

, and I

2(iii) Find the power supplied by the source and the power dissipated in each resistor.

Figure 6(a) (7M)

b) A coil of 20 ohm resistance and an inductance of 0.2 H are connected in parallel

with a capacitor of 100 ?F. Determine the resonant frequency and the input

impedance at resonance. (7M)

7. a) State and explain compensation theorem. (7M)

b) Find the value of R in the circuit shown in figure 7(b) such that maximum power

transfer takes place. What is the amount of this power?

Figure 7(b) (7M)

3 of 3

SET – 1

R16

+

–

3?

-j5?

-j2?

1?

j2?

2?

10

0

0 ? V

1? 5?

R

1? 4V

6V 2?

+

–

+

–

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS (Electrical and

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) Explain source transformation technique

b) Define the following terms(i) Graph of the Network and Sub(ii) Rank of graph.

c) Find the effective value of the inductance for the following connections

in figure 1(c).

d) A current I = 10?30

0

flows through an impedance, Z = 20

average power delivered to the impedance

e) A two element series circuit has a current of 4

when the voltage of 200 sin (2000t+50

Determine the values of elements.

f) State Maximum power transfer theorem

2. a) Determine the node voltages V1

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

Note: 1. Question Paper consists of two parts (Part-A and Part-

Answering the questions in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

Explain source transformation technique.

Define the following terms.

Graph of the Network and Sub graph.

effective value of the inductance for the following connections

Figure 1(c)flows through an impedance, Z = 20? – 22

0

average power delivered to the impedance.

ries circuit has a current of 4 cos (200t + 13.2

0

) amp flowing

when the voltage of 200 sin (2000t+50

0

) volts is applied across its terminals.

Determine the values of elements.

State Maximum power transfer theorem.

PART -B

voltages V1, V

2

, and V

3

for the circuit shown in figure

figure 2(a)R16

1 of 4

I B. Tech II Semester Regular/Supplementary Examinations, April/May – 2018

Max. Marks: 70

-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (2M) (3M)

effective value of the inductance for the following connections as shown (2M)

? find the (2M)

) amp flowing

is applied across its terminals. (3M) (2M)

ure 2(a). (7M)

SET – 2

Code No: R161208

b) Write the loop equations of the circuit

V

x

.

3. a) From figure 3(a), make the graph and find one tree. How many mesh currents are

required for solving the

b) Determine the basic cut set

3(b) where in the elements 1,

4. a) A rectangular core has a cross

materials: cast steel 50 cm and steel 40 cm

mWb in the core. The relative permeability for cast steel is 500 and that of sheet

steel is 2000. The coil has 300 turns. Find mmf and current in the coil.

2?

2?

10

0

0 ? (V)Write the loop equations of the circuit as shown in figure 2(b) and find the

Figure 2(b)make the graph and find one tree. How many mesh currents are

required for solving the network? Find the number of possible trees.

Figure 3(a)Determine the basic cut set matrix for the oriented graph given as shown figure

where in the elements 1, 2, 3 are tree branches.

Figure 3(b)A rectangular core has a cross-sectional area of 20 cm

2

. It is made from two

materials: cast steel 50 cm and steel 40 cm long. It is desired to create a flux of 3

mWb in the core. The relative permeability for cast steel is 500 and that of sheet

steel is 2000. The coil has 300 turns. Find mmf and current in the coil.

R16

2 of 4

j2?

10?

V

2?

j5?

?

?

j2?

5

0

30 ? (V)and find the voltage (7M)

make the graph and find one tree. How many mesh currents are (9M)

as shown figure (5M)

. It is made from two

long. It is desired to create a flux of 3

mWb in the core. The relative permeability for cast steel is 500 and that of sheet (7M)

SET – 2

10?

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS (Electrical and Electronics Engineering

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question in

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) State and explain Kirchoff?s Laws

b) Define the following terms(i) Graph of a network (ii) Oriented graph

c) Find the effective value of the inductance for the

in figure 1(c).

d) Calculate the current drawn by impedance. Z = (30

?0

0

is applied across it.

e) A series RLC circuit has the following parameter values R = 10

C = 10 ?F. Find the Q factor of the circuit at resonance.

f) Is super position valid for power? Substantiate your answer

2. a) In the network shown in

zero current through the (2+j3) b)Determine the voltage V using source transformatio

circuit shown in figure 2(b)

30

3 ?

3 ?

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

1. Question Paper consists of two parts (Part-A and Part

Answering the question in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

State and explain Kirchoff?s Laws.

Define the following terms with example

Find the effective value of the inductance for the following connections

Figure 1(c)Calculate the current drawn by impedance. Z = (30- j70) ? when voltage, V = 120

F. Find the Q factor of the circuit at resonance.

Is super position valid for power? Substantiate your answer.

PART ?B

In the network shown in figure 2(a), determine the voltage V

b

which results in a

zero current through the (2+j3) ? impedance branch.

Figure 2(a)Determine the voltage V using source transformation and simplification

2(b).

1 of 3

2?

j3 ?

4?

j5 ? 6?

V

b

6?

6A

4?

V

__

+

8V

I B. Tech II Semester Regular/Supplementary Examinations, April/May – 2018

Max. Marks: 70

Part-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (3M) (2M)

following connections as shown (3M)

when voltage, V = 120 (2M)

= 0.01 H and (2M) (2M)

which results in a (9M)

n and simplification for the (5M)

SET – 1

V

__

+

Code No: R161208

Using the tie-set schedule obtain the loop equations

b) For the network shown in

m

2

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

flux of f = 4x 10

-4

wb. (b) Determine the values of

these conditions. Assume H for cast steel = 170 At/m.

b) Draw the dotted equivalent circuit for the net work shown in below fig

find the equivalent inductive reactance.

5. a) Two coils of impedance 25.23

across a 230V, 50Hz supply. Find the

active power.

b) Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero.

1

V

shown in figure 3(a), draw the graph and write a tie-

set schedule obtain the loop equations.

Figure 3(a)For the network shown in figure 3(b), draw the graph and show some possible trees

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

wb. (b) Determine the values of ? and ?

r

for the material under

these conditions. Assume H for cast steel = 170 At/m.

equivalent circuit for the net work shown in below fig

find the equivalent inductive reactance.

Figure 4(b)Two coils of impedance 25.23 ? 37

0

and 18.65 ? 68

0

ohms are connected in series

Hz supply. Find the total impedance, current, power factor, and

Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero.

2 of 3

R16

R

2

1

C

1

L

1

I

-set schedule. (10M)

draw the graph and show some possible trees. (4M)

section of the core is 2 x 10

-3

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

for the material under (8M)

equivalent circuit for the net work shown in below figure 4(b). and (6M)

nnected in series

total impedance, current, power factor, and (7M)

Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero. (7M)

SET – 1

R

3

Code No: R161208

6. a) For the circuit shown in figure 6(a). (i) Determine the KVL equations. (ii) Find the two loop currents I

1

, and I

2(iii) Find the power supplied by the source and the power dissipated in each resistor.

b) A coil of 20 ohm resistance and an inductance of 0.2 H are connected in parallel

with a capacitor of 100 ?F. Determine the resonant frequency and the input

impedance at resonance. (7M)

7. a) State and explain compensation theorem. (7M)

b) Find the value of R in the circuit shown in figure 7(b) such that maximum power

transfer takes place. What is the amount of this power?

Figure 7(b) (7M)

3 of 3

SET – 1

R16

+

–

3?

-j5?

-j2?

1?

j2?

2?

10

0

0 ? V

1? 5?

R

1? 4V

6V 2?

+

–

+

–

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS (Electrical and

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) Explain source transformation technique

b) Define the following terms(i) Graph of the Network and Sub(ii) Rank of graph.

c) Find the effective value of the inductance for the following connections

in figure 1(c).

d) A current I = 10?30

0

flows through an impedance, Z = 20

average power delivered to the impedance

e) A two element series circuit has a current of 4

when the voltage of 200 sin (2000t+50

Determine the values of elements.

f) State Maximum power transfer theorem

2. a) Determine the node voltages V1

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

Note: 1. Question Paper consists of two parts (Part-A and Part-

Answering the questions in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

Explain source transformation technique.

Define the following terms.

Graph of the Network and Sub graph.

effective value of the inductance for the following connections

Figure 1(c)flows through an impedance, Z = 20? – 22

0

average power delivered to the impedance.

ries circuit has a current of 4 cos (200t + 13.2

0

) amp flowing

when the voltage of 200 sin (2000t+50

0

) volts is applied across its terminals.

Determine the values of elements.

State Maximum power transfer theorem.

PART -B

voltages V1, V

2

, and V

3

for the circuit shown in figure

figure 2(a)R16

1 of 4

I B. Tech II Semester Regular/Supplementary Examinations, April/May – 2018

Max. Marks: 70

-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (2M) (3M)

effective value of the inductance for the following connections as shown (2M)

? find the (2M)

) amp flowing

is applied across its terminals. (3M) (2M)

ure 2(a). (7M)

SET – 2

Code No: R161208

b) Write the loop equations of the circuit

V

x

.

3. a) From figure 3(a), make the graph and find one tree. How many mesh currents are

required for solving the

b) Determine the basic cut set

3(b) where in the elements 1,

4. a) A rectangular core has a cross

materials: cast steel 50 cm and steel 40 cm

mWb in the core. The relative permeability for cast steel is 500 and that of sheet

steel is 2000. The coil has 300 turns. Find mmf and current in the coil.

2?

2?

10

0

0 ? (V)Write the loop equations of the circuit as shown in figure 2(b) and find the

Figure 2(b)make the graph and find one tree. How many mesh currents are

required for solving the network? Find the number of possible trees.

Figure 3(a)Determine the basic cut set matrix for the oriented graph given as shown figure

where in the elements 1, 2, 3 are tree branches.

Figure 3(b)A rectangular core has a cross-sectional area of 20 cm

2

. It is made from two

materials: cast steel 50 cm and steel 40 cm long. It is desired to create a flux of 3

mWb in the core. The relative permeability for cast steel is 500 and that of sheet

steel is 2000. The coil has 300 turns. Find mmf and current in the coil.

R16

2 of 4

j2?

10?

V

2?

j5?

?

?

j2?

5

0

30 ? (V)and find the voltage (7M)

make the graph and find one tree. How many mesh currents are (9M)

as shown figure (5M)

. It is made from two

long. It is desired to create a flux of 3

mWb in the core. The relative permeability for cast steel is 500 and that of sheet (7M)

SET – 2

10?

Code No: R161208

b) Write down the voltage equation for the following

effective inductance.

5. a) The following circuit show

across 200V, 50Hz ac supply calculate(i) The current drawn from supply(ii) Apparent power(iii) Real power, and(iv) Reactive power

b) Determine the rms value of a saw tooth

6. a) A series RLC circuit consists of resistance R = 20

capacitance, C= 0.04?F

frequency equal to the frequency of resonance is applied to this

the values of V

C

and V

L

these voltages V

C

and V

L

Write down the voltage equation for the following figure 4(b), and determine the

Figure 4(b)The following circuit shown in figure 5(a) is a parallel RL arrangement connected

Hz ac supply calculate.

The current drawn from supply

Apparent power

Real power, and

Reactive power

Figure 5(a)Determine the rms value of a saw tooth wave as shown in figure 5(b).

Figure 5(b)A series RLC circuit consists of resistance R = 20 ?, inductance, L=

?F. Calculate the frequency at resonance. If a 10 Volts of

frequency equal to the frequency of resonance is applied to this circuit, calculate

across C and L respectively. Find the frequencies at which

V

L

are maximum? .

R16

3 of 4

, and determine the (7M)

rrangement connected (7M) (7M)

0.01H and

10 Volts of

circuit, calculate

the frequencies at which (7M)

SET – 2

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS (Electrical and Electronics Engineering

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question in

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) State and explain Kirchoff?s Laws

b) Define the following terms(i) Graph of a network (ii) Oriented graph

c) Find the effective value of the inductance for the

in figure 1(c).

d) Calculate the current drawn by impedance. Z = (30

?0

0

is applied across it.

e) A series RLC circuit has the following parameter values R = 10

C = 10 ?F. Find the Q factor of the circuit at resonance.

f) Is super position valid for power? Substantiate your answer

2. a) In the network shown in

zero current through the (2+j3) b)Determine the voltage V using source transformatio

circuit shown in figure 2(b)

30

3 ?

3 ?

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

1. Question Paper consists of two parts (Part-A and Part

Answering the question in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

State and explain Kirchoff?s Laws.

Define the following terms with example

Find the effective value of the inductance for the following connections

Figure 1(c)Calculate the current drawn by impedance. Z = (30- j70) ? when voltage, V = 120

F. Find the Q factor of the circuit at resonance.

Is super position valid for power? Substantiate your answer.

PART ?B

In the network shown in figure 2(a), determine the voltage V

b

which results in a

zero current through the (2+j3) ? impedance branch.

Figure 2(a)Determine the voltage V using source transformation and simplification

2(b).

1 of 3

2?

j3 ?

4?

j5 ? 6?

V

b

6?

6A

4?

V

__

+

8V

I B. Tech II Semester Regular/Supplementary Examinations, April/May – 2018

Max. Marks: 70

Part-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (3M) (2M)

following connections as shown (3M)

when voltage, V = 120 (2M)

= 0.01 H and (2M) (2M)

which results in a (9M)

n and simplification for the (5M)

SET – 1

V

__

+

Code No: R161208

Using the tie-set schedule obtain the loop equations

b) For the network shown in

m

2

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

flux of f = 4x 10

-4

wb. (b) Determine the values of

these conditions. Assume H for cast steel = 170 At/m.

b) Draw the dotted equivalent circuit for the net work shown in below fig

find the equivalent inductive reactance.

5. a) Two coils of impedance 25.23

across a 230V, 50Hz supply. Find the

active power.

b) Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero.

1

V

shown in figure 3(a), draw the graph and write a tie-

set schedule obtain the loop equations.

Figure 3(a)For the network shown in figure 3(b), draw the graph and show some possible trees

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

wb. (b) Determine the values of ? and ?

r

for the material under

these conditions. Assume H for cast steel = 170 At/m.

equivalent circuit for the net work shown in below fig

find the equivalent inductive reactance.

Figure 4(b)Two coils of impedance 25.23 ? 37

0

and 18.65 ? 68

0

ohms are connected in series

Hz supply. Find the total impedance, current, power factor, and

Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero.

2 of 3

R16

R

2

1

C

1

L

1

I

-set schedule. (10M)

draw the graph and show some possible trees. (4M)

section of the core is 2 x 10

-3

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

for the material under (8M)

equivalent circuit for the net work shown in below figure 4(b). and (6M)

nnected in series

total impedance, current, power factor, and (7M)

Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero. (7M)

SET – 1

R

3

Code No: R161208

6. a) For the circuit shown in figure 6(a). (i) Determine the KVL equations. (ii) Find the two loop currents I

1

, and I

2(iii) Find the power supplied by the source and the power dissipated in each resistor.

b) A coil of 20 ohm resistance and an inductance of 0.2 H are connected in parallel

with a capacitor of 100 ?F. Determine the resonant frequency and the input

impedance at resonance. (7M)

7. a) State and explain compensation theorem. (7M)

b) Find the value of R in the circuit shown in figure 7(b) such that maximum power

transfer takes place. What is the amount of this power?

Figure 7(b) (7M)

SET – 1

R16

+

–

3?

-j5?

-j2?

1?

j2?

2?

10

0

0 ? V

1? 5?

R

1? 4V

6V 2?

+

–

+

–

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS (Electrical and

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) Explain source transformation technique

b) Define the following terms(i) Graph of the Network and Sub(ii) Rank of graph.

c) Find the effective value of the inductance for the following connections

in figure 1(c).

d) A current I = 10?30

0

flows through an impedance, Z = 20

average power delivered to the impedance

e) A two element series circuit has a current of 4

when the voltage of 200 sin (2000t+50

Determine the values of elements.

f) State Maximum power transfer theorem

2. a) Determine the node voltages V1

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

Note: 1. Question Paper consists of two parts (Part-A and Part-

Answering the questions in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

Explain source transformation technique.

Define the following terms.

Graph of the Network and Sub graph.

effective value of the inductance for the following connections

Figure 1(c)flows through an impedance, Z = 20? – 22

0

average power delivered to the impedance.

ries circuit has a current of 4 cos (200t + 13.2

0

) amp flowing

when the voltage of 200 sin (2000t+50

0

) volts is applied across its terminals.

Determine the values of elements.

State Maximum power transfer theorem.

PART -B

voltages V1, V

2

, and V

3

for the circuit shown in figure

figure 2(a)R16

1 of 4

I B. Tech II Semester Regular/Supplementary Examinations, April/May – 2018

Max. Marks: 70

-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (2M) (3M)

effective value of the inductance for the following connections as shown (2M)

? find the (2M)

) amp flowing

is applied across its terminals. (3M) (2M)

ure 2(a). (7M)

SET – 2

Code No: R161208

b) Write the loop equations of the circuit

V

x

.

3. a) From figure 3(a), make the graph and find one tree. How many mesh currents are

required for solving the

b) Determine the basic cut set

3(b) where in the elements 1,

4. a) A rectangular core has a cross

materials: cast steel 50 cm and steel 40 cm

mWb in the core. The relative permeability for cast steel is 500 and that of sheet

steel is 2000. The coil has 300 turns. Find mmf and current in the coil.

2?

2?

10

0

0 ? (V)Write the loop equations of the circuit as shown in figure 2(b) and find the

Figure 2(b)make the graph and find one tree. How many mesh currents are

required for solving the network? Find the number of possible trees.

Figure 3(a)Determine the basic cut set matrix for the oriented graph given as shown figure

where in the elements 1, 2, 3 are tree branches.

Figure 3(b)A rectangular core has a cross-sectional area of 20 cm

2

. It is made from two

materials: cast steel 50 cm and steel 40 cm long. It is desired to create a flux of 3

mWb in the core. The relative permeability for cast steel is 500 and that of sheet

steel is 2000. The coil has 300 turns. Find mmf and current in the coil.

R16

2 of 4

j2?

10?

V

2?

j5?

?

?

j2?

5

0

30 ? (V)and find the voltage (7M)

make the graph and find one tree. How many mesh currents are (9M)

as shown figure (5M)

. It is made from two

long. It is desired to create a flux of 3

mWb in the core. The relative permeability for cast steel is 500 and that of sheet (7M)

SET – 2

10?

Code No: R161208

b) Write down the voltage equation for the following

effective inductance.

5. a) The following circuit show

across 200V, 50Hz ac supply calculate(i) The current drawn from supply(ii) Apparent power(iii) Real power, and(iv) Reactive power

b) Determine the rms value of a saw tooth

6. a) A series RLC circuit consists of resistance R = 20

capacitance, C= 0.04?F

frequency equal to the frequency of resonance is applied to this

the values of V

C

and V

L

these voltages V

C

and V

L

Write down the voltage equation for the following figure 4(b), and determine the

Figure 4(b)The following circuit shown in figure 5(a) is a parallel RL arrangement connected

Hz ac supply calculate.

The current drawn from supply

Apparent power

Real power, and

Reactive power

Figure 5(a)Determine the rms value of a saw tooth wave as shown in figure 5(b).

Figure 5(b)A series RLC circuit consists of resistance R = 20 ?, inductance, L=

?F. Calculate the frequency at resonance. If a 10 Volts of

frequency equal to the frequency of resonance is applied to this circuit, calculate

across C and L respectively. Find the frequencies at which

V

L

are maximum? .

R16

3 of 4

, and determine the (7M)

rrangement connected (7M) (7M)

0.01H and

10 Volts of

circuit, calculate

the frequencies at which (7M)

SET – 2

Code No: R161208

b) For the series circuit shown

the power factor is 0.866 lag using locus diagram

7. a) Find the current flowing in the resistor R

resistance of 0.5 ? is inserted in series with R

theorem, the current that will flow through R

b) Calculate the voltage V across the resistor R by using the superposition theorem

shown in figure 7(b).

For the series circuit shown in figure 6(b), evaluate the value of reactance when

the power factor is 0.866 lag using locus diagram.

Figure 6(b)Find the current flowing in the resistor R

4

of the network shown in figure 7(a)

is inserted in series with R

4

, find, using the compensation

theorem, the current that will flow through R

4?

Figure 7(a)Calculate the voltage V across the resistor R by using the superposition theorem

Figure 7(b).

4 of 4

R

1

=4? R

3

=8?

R

2

=16? R

4

=8?

12V

R16

evaluate the value of reactance when (7M)

ure 7(a). If a

find, using the compensation (7M)

Calculate the voltage V across the resistor R by using the superposition theorem as (7M)

SET – 2

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS (Electrical and Electronics Engineering

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question in

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) State and explain Kirchoff?s Laws

b) Define the following terms(i) Graph of a network (ii) Oriented graph

c) Find the effective value of the inductance for the

in figure 1(c).

d) Calculate the current drawn by impedance. Z = (30

?0

0

is applied across it.

e) A series RLC circuit has the following parameter values R = 10

C = 10 ?F. Find the Q factor of the circuit at resonance.

f) Is super position valid for power? Substantiate your answer

2. a) In the network shown in

zero current through the (2+j3) b)Determine the voltage V using source transformatio

circuit shown in figure 2(b)

30

3 ?

3 ?

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

1. Question Paper consists of two parts (Part-A and Part

Answering the question in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

State and explain Kirchoff?s Laws.

Define the following terms with example

Find the effective value of the inductance for the following connections

Figure 1(c)Calculate the current drawn by impedance. Z = (30- j70) ? when voltage, V = 120

F. Find the Q factor of the circuit at resonance.

Is super position valid for power? Substantiate your answer.

PART ?B

In the network shown in figure 2(a), determine the voltage V

b

which results in a

zero current through the (2+j3) ? impedance branch.

Figure 2(a)Determine the voltage V using source transformation and simplification

2(b).

1 of 3

2?

j3 ?

4?

j5 ? 6?

V

b

6?

6A

4?

V

__

+

8V

I B. Tech II Semester Regular/Supplementary Examinations, April/May – 2018

Max. Marks: 70

Part-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (3M) (2M)

following connections as shown (3M)

when voltage, V = 120 (2M)

= 0.01 H and (2M) (2M)

which results in a (9M)

n and simplification for the (5M)

SET – 1

V

__

+

Code No: R161208

Using the tie-set schedule obtain the loop equations

b) For the network shown in

m

2

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

flux of f = 4x 10

-4

wb. (b) Determine the values of

these conditions. Assume H for cast steel = 170 At/m.

b) Draw the dotted equivalent circuit for the net work shown in below fig

find the equivalent inductive reactance.

5. a) Two coils of impedance 25.23

across a 230V, 50Hz supply. Find the

active power.

b) Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero.

1

V

shown in figure 3(a), draw the graph and write a tie-

set schedule obtain the loop equations.

Figure 3(a)For the network shown in figure 3(b), draw the graph and show some possible trees

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

wb. (b) Determine the values of ? and ?

r

for the material under

these conditions. Assume H for cast steel = 170 At/m.

equivalent circuit for the net work shown in below fig

find the equivalent inductive reactance.

Figure 4(b)Two coils of impedance 25.23 ? 37

0

and 18.65 ? 68

0

ohms are connected in series

Hz supply. Find the total impedance, current, power factor, and

Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero.

2 of 3

R16

R

2

1

C

1

L

1

I

-set schedule. (10M)

draw the graph and show some possible trees. (4M)

section of the core is 2 x 10

-3

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

for the material under (8M)

equivalent circuit for the net work shown in below figure 4(b). and (6M)

nnected in series

total impedance, current, power factor, and (7M)

Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero. (7M)

SET – 1

R

3

Code No: R161208

6. a) For the circuit shown in figure 6(a). (i) Determine the KVL equations. (ii) Find the two loop currents I

1

, and I

2(iii) Find the power supplied by the source and the power dissipated in each resistor.

b) A coil of 20 ohm resistance and an inductance of 0.2 H are connected in parallel

with a capacitor of 100 ?F. Determine the resonant frequency and the input

impedance at resonance. (7M)

7. a) State and explain compensation theorem. (7M)

b) Find the value of R in the circuit shown in figure 7(b) such that maximum power

transfer takes place. What is the amount of this power?

Figure 7(b) (7M)

SET – 1

R16

+

–

3?

-j5?

-j2?

1?

j2?

2?

10

0

0 ? V

1? 5?

R

1? 4V

6V 2?

+

–

+

–

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS (Electrical and

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) Explain source transformation technique

b) Define the following terms(i) Graph of the Network and Sub(ii) Rank of graph.

c) Find the effective value of the inductance for the following connections

in figure 1(c).

d) A current I = 10?30

0

flows through an impedance, Z = 20

average power delivered to the impedance

e) A two element series circuit has a current of 4

when the voltage of 200 sin (2000t+50

Determine the values of elements.

f) State Maximum power transfer theorem

2. a) Determine the node voltages V1

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

Note: 1. Question Paper consists of two parts (Part-A and Part-

Answering the questions in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

Explain source transformation technique.

Define the following terms.

Graph of the Network and Sub graph.

effective value of the inductance for the following connections

Figure 1(c)flows through an impedance, Z = 20? – 22

0

average power delivered to the impedance.

ries circuit has a current of 4 cos (200t + 13.2

0

) amp flowing

when the voltage of 200 sin (2000t+50

0

) volts is applied across its terminals.

Determine the values of elements.

State Maximum power transfer theorem.

PART -B

voltages V1, V

2

, and V

3

for the circuit shown in figure

figure 2(a)R16

1 of 4

I B. Tech II Semester Regular/Supplementary Examinations, April/May – 2018

Max. Marks: 70

-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (2M) (3M)

effective value of the inductance for the following connections as shown (2M)

? find the (2M)

) amp flowing

is applied across its terminals. (3M) (2M)

ure 2(a). (7M)

SET – 2

Code No: R161208

b) Write the loop equations of the circuit

V

x

.

required for solving the

b) Determine the basic cut set

3(b) where in the elements 1,

4. a) A rectangular core has a cross

materials: cast steel 50 cm and steel 40 cm

mWb in the core. The relative permeability for cast steel is 500 and that of sheet

steel is 2000. The coil has 300 turns. Find mmf and current in the coil.

2?

2?

10

0

0 ? (V)Write the loop equations of the circuit as shown in figure 2(b) and find the

Figure 2(b)make the graph and find one tree. How many mesh currents are

required for solving the network? Find the number of possible trees.

Figure 3(a)Determine the basic cut set matrix for the oriented graph given as shown figure

where in the elements 1, 2, 3 are tree branches.

Figure 3(b)A rectangular core has a cross-sectional area of 20 cm

2

. It is made from two

materials: cast steel 50 cm and steel 40 cm long. It is desired to create a flux of 3

mWb in the core. The relative permeability for cast steel is 500 and that of sheet

steel is 2000. The coil has 300 turns. Find mmf and current in the coil.

R16

2 of 4

j2?

10?

V

2?

j5?

?

?

j2?

5

0

30 ? (V)and find the voltage (7M)

make the graph and find one tree. How many mesh currents are (9M)

as shown figure (5M)

. It is made from two

long. It is desired to create a flux of 3

mWb in the core. The relative permeability for cast steel is 500 and that of sheet (7M)

SET – 2

10?

Code No: R161208

b) Write down the voltage equation for the following

effective inductance.

5. a) The following circuit show

across 200V, 50Hz ac supply calculate(i) The current drawn from supply(ii) Apparent power(iii) Real power, and(iv) Reactive power

b) Determine the rms value of a saw tooth

6. a) A series RLC circuit consists of resistance R = 20

capacitance, C= 0.04?F

frequency equal to the frequency of resonance is applied to this

the values of V

C

and V

L

these voltages V

C

and V

L

Write down the voltage equation for the following figure 4(b), and determine the

Figure 4(b)The following circuit shown in figure 5(a) is a parallel RL arrangement connected

Hz ac supply calculate.

The current drawn from supply

Apparent power

Real power, and

Reactive power

Figure 5(a)Determine the rms value of a saw tooth wave as shown in figure 5(b).

Figure 5(b)A series RLC circuit consists of resistance R = 20 ?, inductance, L=

?F. Calculate the frequency at resonance. If a 10 Volts of

frequency equal to the frequency of resonance is applied to this circuit, calculate

across C and L respectively. Find the frequencies at which

V

L

are maximum? .

R16

3 of 4

, and determine the (7M)

rrangement connected (7M) (7M)

0.01H and

10 Volts of

circuit, calculate

the frequencies at which (7M)

SET – 2

Code No: R161208

b) For the series circuit shown

the power factor is 0.866 lag using locus diagram

7. a) Find the current flowing in the resistor R

resistance of 0.5 ? is inserted in series with R

theorem, the current that will flow through R

b) Calculate the voltage V across the resistor R by using the superposition theorem

shown in figure 7(b).

For the series circuit shown in figure 6(b), evaluate the value of reactance when

the power factor is 0.866 lag using locus diagram.

Figure 6(b)Find the current flowing in the resistor R

4

of the network shown in figure 7(a)

is inserted in series with R

4

, find, using the compensation

theorem, the current that will flow through R

4?

Figure 7(a)Calculate the voltage V across the resistor R by using the superposition theorem

Figure 7(b).

4 of 4

R

1

=4? R

3

=8?

R

2

=16? R

4

=8?

12V

R16

evaluate the value of reactance when (7M)

ure 7(a). If a

find, using the compensation (7M)

Calculate the voltage V across the resistor R by using the superposition theorem as (7M)

SET – 2

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS (Electrical and Electronics Engineering

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question in

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) Distinguish between independent and dependent sources.

b) Draw the dual of the network shown

c) Explain the dot convention used in magnetically coupled circuits.

d) Find the response ?I? of an RL series circuit if R = 2

voltage, v(t) = 10 sin 3t.

e) Bring out the differences between series and parallel resonance

f) Obtain the Norton?s equivalent circuit with respect to the terminals AB for the

network shown in figure

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

Note: 1. Question Paper consists of two parts (Part-A and Part-

Answering the question in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

Distinguish between independent and dependent sources.

Draw the dual of the network shown in figure 1(b).

Figure 1(b)Explain the dot convention used in magnetically coupled circuits.

of an RL series circuit if R = 2?, L = 1H and the input

.

differences between series and parallel resonance.

s equivalent circuit with respect to the terminals AB for the

ure 1(f).

Figure 1(f)R16

1 of 4

I B. Tech II Semester Regular/Supplementary Examinations, April/May – 2018

Max. Marks: 70

-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (3M) (3M) (2M)

, L = 1H and the input (2M) (2M)

s equivalent circuit with respect to the terminals AB for the (2M)

SET – 3

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS (Electrical and Electronics Engineering

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question in

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) State and explain Kirchoff?s Laws

b) Define the following terms(i) Graph of a network (ii) Oriented graph

c) Find the effective value of the inductance for the

in figure 1(c).

d) Calculate the current drawn by impedance. Z = (30

?0

0

is applied across it.

e) A series RLC circuit has the following parameter values R = 10

C = 10 ?F. Find the Q factor of the circuit at resonance.

f) Is super position valid for power? Substantiate your answer

2. a) In the network shown in

zero current through the (2+j3) b)Determine the voltage V using source transformatio

circuit shown in figure 2(b)

30

3 ?

3 ?

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

1. Question Paper consists of two parts (Part-A and Part

Answering the question in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

State and explain Kirchoff?s Laws.

Define the following terms with example

Find the effective value of the inductance for the following connections

Figure 1(c)Calculate the current drawn by impedance. Z = (30- j70) ? when voltage, V = 120

F. Find the Q factor of the circuit at resonance.

Is super position valid for power? Substantiate your answer.

PART ?B

In the network shown in figure 2(a), determine the voltage V

b

which results in a

zero current through the (2+j3) ? impedance branch.

Figure 2(a)Determine the voltage V using source transformation and simplification

2(b).

1 of 3

2?

j3 ?

4?

j5 ? 6?

V

b

6?

6A

4?

V

__

+

8V

I B. Tech II Semester Regular/Supplementary Examinations, April/May – 2018

Max. Marks: 70

Part-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (3M) (2M)

following connections as shown (3M)

when voltage, V = 120 (2M)

= 0.01 H and (2M) (2M)

which results in a (9M)

n and simplification for the (5M)

SET – 1

V

__

+

Code No: R161208

Using the tie-set schedule obtain the loop equations

b) For the network shown in

m

2

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

flux of f = 4x 10

-4

wb. (b) Determine the values of

these conditions. Assume H for cast steel = 170 At/m.

b) Draw the dotted equivalent circuit for the net work shown in below fig

find the equivalent inductive reactance.

5. a) Two coils of impedance 25.23

across a 230V, 50Hz supply. Find the

active power.

b) Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero.

1

V

shown in figure 3(a), draw the graph and write a tie-

set schedule obtain the loop equations.

Figure 3(a)For the network shown in figure 3(b), draw the graph and show some possible trees

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

wb. (b) Determine the values of ? and ?

r

for the material under

these conditions. Assume H for cast steel = 170 At/m.

equivalent circuit for the net work shown in below fig

find the equivalent inductive reactance.

Figure 4(b)Two coils of impedance 25.23 ? 37

0

and 18.65 ? 68

0

ohms are connected in series

Hz supply. Find the total impedance, current, power factor, and

Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero.

2 of 3

R16

R

2

1

C

1

L

1

I

-set schedule. (10M)

draw the graph and show some possible trees. (4M)

section of the core is 2 x 10

-3

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

for the material under (8M)

equivalent circuit for the net work shown in below figure 4(b). and (6M)

nnected in series

total impedance, current, power factor, and (7M)

Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero. (7M)

SET – 1

R

3

Code No: R161208

6. a) For the circuit shown in figure 6(a). (i) Determine the KVL equations. (ii) Find the two loop currents I

1

, and I

2(iii) Find the power supplied by the source and the power dissipated in each resistor.

b) A coil of 20 ohm resistance and an inductance of 0.2 H are connected in parallel

with a capacitor of 100 ?F. Determine the resonant frequency and the input

impedance at resonance. (7M)

7. a) State and explain compensation theorem. (7M)

b) Find the value of R in the circuit shown in figure 7(b) such that maximum power

transfer takes place. What is the amount of this power?

Figure 7(b) (7M)

SET – 1

R16

+

–

3?

-j5?

-j2?

1?

j2?

2?

10

0

0 ? V

1? 5?

R

1? 4V

6V 2?

+

–

+

–

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS (Electrical and

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) Explain source transformation technique

b) Define the following terms(i) Graph of the Network and Sub(ii) Rank of graph.

c) Find the effective value of the inductance for the following connections

in figure 1(c).

d) A current I = 10?30

0

flows through an impedance, Z = 20

average power delivered to the impedance

e) A two element series circuit has a current of 4

when the voltage of 200 sin (2000t+50

Determine the values of elements.

f) State Maximum power transfer theorem

2. a) Determine the node voltages V1

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

Note: 1. Question Paper consists of two parts (Part-A and Part-

Answering the questions in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

Explain source transformation technique.

Define the following terms.

Graph of the Network and Sub graph.

effective value of the inductance for the following connections

Figure 1(c)flows through an impedance, Z = 20? – 22

0

average power delivered to the impedance.

ries circuit has a current of 4 cos (200t + 13.2

0

) amp flowing

when the voltage of 200 sin (2000t+50

0

) volts is applied across its terminals.

Determine the values of elements.

State Maximum power transfer theorem.

PART -B

voltages V1, V

2

, and V

3

for the circuit shown in figure

figure 2(a)R16

1 of 4

I B. Tech II Semester Regular/Supplementary Examinations, April/May – 2018

Max. Marks: 70

-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (2M) (3M)

effective value of the inductance for the following connections as shown (2M)

? find the (2M)

) amp flowing

is applied across its terminals. (3M) (2M)

ure 2(a). (7M)

SET – 2

Code No: R161208

b) Write the loop equations of the circuit

V

x

.

required for solving the

b) Determine the basic cut set

3(b) where in the elements 1,

4. a) A rectangular core has a cross

materials: cast steel 50 cm and steel 40 cm

mWb in the core. The relative permeability for cast steel is 500 and that of sheet

steel is 2000. The coil has 300 turns. Find mmf and current in the coil.

2?

2?

10

0

0 ? (V)Write the loop equations of the circuit as shown in figure 2(b) and find the

required for solving the network? Find the number of possible trees.

Figure 3(a)Determine the basic cut set matrix for the oriented graph given as shown figure

where in the elements 1, 2, 3 are tree branches.

Figure 3(b)A rectangular core has a cross-sectional area of 20 cm

2

. It is made from two

materials: cast steel 50 cm and steel 40 cm long. It is desired to create a flux of 3

mWb in the core. The relative permeability for cast steel is 500 and that of sheet

steel is 2000. The coil has 300 turns. Find mmf and current in the coil.

R16

2 of 4

j2?

10?

V

2?

j5?

?

?

j2?

5

0

30 ? (V)and find the voltage (7M)

make the graph and find one tree. How many mesh currents are (9M)

as shown figure (5M)

. It is made from two

long. It is desired to create a flux of 3

mWb in the core. The relative permeability for cast steel is 500 and that of sheet (7M)

SET – 2

10?

Code No: R161208

effective inductance.

5. a) The following circuit show

across 200V, 50Hz ac supply calculate(i) The current drawn from supply(ii) Apparent power(iii) Real power, and(iv) Reactive power

b) Determine the rms value of a saw tooth

6. a) A series RLC circuit consists of resistance R = 20

capacitance, C= 0.04?F

frequency equal to the frequency of resonance is applied to this

the values of V

C

and V

L

these voltages V

C

and V

L

Write down the voltage equation for the following figure 4(b), and determine the

Figure 4(b)The following circuit shown in figure 5(a) is a parallel RL arrangement connected

Hz ac supply calculate.

The current drawn from supply

Apparent power

Real power, and

Reactive power

Figure 5(a)Determine the rms value of a saw tooth wave as shown in figure 5(b).

Figure 5(b)A series RLC circuit consists of resistance R = 20 ?, inductance, L=

?F. Calculate the frequency at resonance. If a 10 Volts of

frequency equal to the frequency of resonance is applied to this circuit, calculate

across C and L respectively. Find the frequencies at which

V

L

are maximum? .

R16

3 of 4

, and determine the (7M)

rrangement connected (7M) (7M)

0.01H and

10 Volts of

circuit, calculate

the frequencies at which (7M)

SET – 2

Code No: R161208

b) For the series circuit shown

the power factor is 0.866 lag using locus diagram

7. a) Find the current flowing in the resistor R

resistance of 0.5 ? is inserted in series with R

theorem, the current that will flow through R

b) Calculate the voltage V across the resistor R by using the superposition theorem

shown in figure 7(b).

For the series circuit shown in figure 6(b), evaluate the value of reactance when

the power factor is 0.866 lag using locus diagram.

Figure 6(b)Find the current flowing in the resistor R

4

of the network shown in figure 7(a)

is inserted in series with R

4

, find, using the compensation

theorem, the current that will flow through R

4?

Figure 7(a)Calculate the voltage V across the resistor R by using the superposition theorem

Figure 7(b).

4 of 4

R

1

=4? R

3

=8?

R

2

=16? R

4

=8?

12V

R16

evaluate the value of reactance when (7M)

ure 7(a). If a

find, using the compensation (7M)

Calculate the voltage V across the resistor R by using the superposition theorem as (7M)

SET – 2

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS (Electrical and Electronics Engineering

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question in

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) Distinguish between independent and dependent sources.

b) Draw the dual of the network shown

c) Explain the dot convention used in magnetically coupled circuits.

d) Find the response ?I? of an RL series circuit if R = 2

voltage, v(t) = 10 sin 3t.

e) Bring out the differences between series and parallel resonance

f) Obtain the Norton?s equivalent circuit with respect to the terminals AB for the

network shown in figure

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

Note: 1. Question Paper consists of two parts (Part-A and Part-

Answering the question in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

Distinguish between independent and dependent sources.

Draw the dual of the network shown in figure 1(b).

Figure 1(b)Explain the dot convention used in magnetically coupled circuits.

of an RL series circuit if R = 2?, L = 1H and the input

.

differences between series and parallel resonance.

s equivalent circuit with respect to the terminals AB for the

ure 1(f).

Figure 1(f)R16

1 of 4

I B. Tech II Semester Regular/Supplementary Examinations, April/May – 2018

Max. Marks: 70

-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (3M) (3M) (2M)

, L = 1H and the input (2M) (2M)

s equivalent circuit with respect to the terminals AB for the (2M)

SET – 3

Code No: R161208

2. a) Determine the current through 10

by using star-delta conversion

b) Write the mesh equation for the circuit shown in figure 2(b) and determine the

currents I

1

, I

2

and I

3

.

3. a) For the graph shown in fig

tie-set matrix.

4?

8?

12?

20A

PART ?B

Determine the current through 10-? resistance in the network shown in fig

conversion.

Figure 2(a)the mesh equation for the circuit shown in figure 2(b) and determine the

Figure 2(b)r the graph shown in figure 3(a) select a tree, identify the tie-sets and write the

Figure 3(a)

R16

2 of 4

? 24?

13?

30?

?

12?

10?

17?

30?

+ –

180V

3?

I

1

I

2

I

3

2?

20V

resistance in the network shown in figure 2(a) (7M)

the mesh equation for the circuit shown in figure 2(b) and determine the (7M)

sets and write the (7M)

SET – 3

?

4?

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS (Electrical and Electronics Engineering

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question in

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) State and explain Kirchoff?s Laws

b) Define the following terms(i) Graph of a network (ii) Oriented graph

c) Find the effective value of the inductance for the

in figure 1(c).

d) Calculate the current drawn by impedance. Z = (30

?0

0

is applied across it.

e) A series RLC circuit has the following parameter values R = 10

C = 10 ?F. Find the Q factor of the circuit at resonance.

f) Is super position valid for power? Substantiate your answer

2. a) In the network shown in

zero current through the (2+j3) b)Determine the voltage V using source transformatio

circuit shown in figure 2(b)

30

3 ?

3 ?

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

1. Question Paper consists of two parts (Part-A and Part

Answering the question in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

State and explain Kirchoff?s Laws.

Define the following terms with example

Find the effective value of the inductance for the following connections

Figure 1(c)Calculate the current drawn by impedance. Z = (30- j70) ? when voltage, V = 120

F. Find the Q factor of the circuit at resonance.

Is super position valid for power? Substantiate your answer.

PART ?B

In the network shown in figure 2(a), determine the voltage V

b

which results in a

zero current through the (2+j3) ? impedance branch.

Figure 2(a)Determine the voltage V using source transformation and simplification

2(b).

1 of 3

2?

j3 ?

4?

j5 ? 6?

V

b

6?

6A

4?

V

__

+

8V

I B. Tech II Semester Regular/Supplementary Examinations, April/May – 2018

Max. Marks: 70

Part-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (3M) (2M)

following connections as shown (3M)

when voltage, V = 120 (2M)

= 0.01 H and (2M) (2M)

which results in a (9M)

n and simplification for the (5M)

SET – 1

V

__

+

Code No: R161208

Using the tie-set schedule obtain the loop equations

b) For the network shown in

m

2

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

flux of f = 4x 10

-4

wb. (b) Determine the values of

these conditions. Assume H for cast steel = 170 At/m.

b) Draw the dotted equivalent circuit for the net work shown in below fig

find the equivalent inductive reactance.

5. a) Two coils of impedance 25.23

across a 230V, 50Hz supply. Find the

active power.

b) Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero.

1

V

shown in figure 3(a), draw the graph and write a tie-

set schedule obtain the loop equations.

Figure 3(a)For the network shown in figure 3(b), draw the graph and show some possible trees

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

wb. (b) Determine the values of ? and ?

r

for the material under

these conditions. Assume H for cast steel = 170 At/m.

equivalent circuit for the net work shown in below fig

find the equivalent inductive reactance.

Figure 4(b)Two coils of impedance 25.23 ? 37

0

and 18.65 ? 68

0

ohms are connected in series

Hz supply. Find the total impedance, current, power factor, and

Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero.

2 of 3

R16

R

2

1

C

1

L

1

I

-set schedule. (10M)

draw the graph and show some possible trees. (4M)

section of the core is 2 x 10

-3

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

for the material under (8M)

equivalent circuit for the net work shown in below figure 4(b). and (6M)

nnected in series

total impedance, current, power factor, and (7M)

Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero. (7M)

SET – 1

R

3

Code No: R161208

6. a) For the circuit shown in figure 6(a). (i) Determine the KVL equations. (ii) Find the two loop currents I

1

, and I

2(iii) Find the power supplied by the source and the power dissipated in each resistor.

b) A coil of 20 ohm resistance and an inductance of 0.2 H are connected in parallel

with a capacitor of 100 ?F. Determine the resonant frequency and the input

impedance at resonance. (7M)

7. a) State and explain compensation theorem. (7M)

b) Find the value of R in the circuit shown in figure 7(b) such that maximum power

transfer takes place. What is the amount of this power?

Figure 7(b) (7M)

SET – 1

R16

+

–

3?

-j5?

-j2?

1?

j2?

2?

10

0

0 ? V

1? 5?

R

1? 4V

6V 2?

+

–

+

–

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS (Electrical and

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) Explain source transformation technique

b) Define the following terms(i) Graph of the Network and Sub(ii) Rank of graph.

c) Find the effective value of the inductance for the following connections

in figure 1(c).

d) A current I = 10?30

0

flows through an impedance, Z = 20

average power delivered to the impedance

e) A two element series circuit has a current of 4

when the voltage of 200 sin (2000t+50

Determine the values of elements.

f) State Maximum power transfer theorem

2. a) Determine the node voltages V1

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

Note: 1. Question Paper consists of two parts (Part-A and Part-

Answering the questions in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

Explain source transformation technique.

Define the following terms.

Graph of the Network and Sub graph.

effective value of the inductance for the following connections

Figure 1(c)flows through an impedance, Z = 20? – 22

0

average power delivered to the impedance.

ries circuit has a current of 4 cos (200t + 13.2

0

) amp flowing

when the voltage of 200 sin (2000t+50

0

) volts is applied across its terminals.

Determine the values of elements.

State Maximum power transfer theorem.

PART -B

voltages V1, V

2

, and V

3

for the circuit shown in figure

figure 2(a)R16

1 of 4

I B. Tech II Semester Regular/Supplementary Examinations, April/May – 2018

Max. Marks: 70

-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (2M) (3M)

effective value of the inductance for the following connections as shown (2M)

? find the (2M)

) amp flowing

is applied across its terminals. (3M) (2M)

ure 2(a). (7M)

SET – 2

Code No: R161208

b) Write the loop equations of the circuit

V

x

.

required for solving the

b) Determine the basic cut set

3(b) where in the elements 1,

4. a) A rectangular core has a cross

materials: cast steel 50 cm and steel 40 cm

mWb in the core. The relative permeability for cast steel is 500 and that of sheet

steel is 2000. The coil has 300 turns. Find mmf and current in the coil.

2?

2?

10

0

0 ? (V)Write the loop equations of the circuit as shown in figure 2(b) and find the

required for solving the network? Find the number of possible trees.

Figure 3(a)Determine the basic cut set matrix for the oriented graph given as shown figure

where in the elements 1, 2, 3 are tree branches.

Figure 3(b)A rectangular core has a cross-sectional area of 20 cm

2

. It is made from two

materials: cast steel 50 cm and steel 40 cm long. It is desired to create a flux of 3

mWb in the core. The relative permeability for cast steel is 500 and that of sheet

steel is 2000. The coil has 300 turns. Find mmf and current in the coil.

R16

2 of 4

j2?

10?

V

2?

j5?

?

?

j2?

5

0

30 ? (V)and find the voltage (7M)

make the graph and find one tree. How many mesh currents are (9M)

as shown figure (5M)

. It is made from two

long. It is desired to create a flux of 3

mWb in the core. The relative permeability for cast steel is 500 and that of sheet (7M)

SET – 2

10?

Code No: R161208

effective inductance.

5. a) The following circuit show

across 200V, 50Hz ac supply calculate(i) The current drawn from supply(ii) Apparent power(iii) Real power, and(iv) Reactive power

b) Determine the rms value of a saw tooth

6. a) A series RLC circuit consists of resistance R = 20

capacitance, C= 0.04?F

frequency equal to the frequency of resonance is applied to this

the values of V

C

and V

L

these voltages V

C

and V

L

Figure 4(b)The following circuit shown in figure 5(a) is a parallel RL arrangement connected

Hz ac supply calculate.

The current drawn from supply

Apparent power

Real power, and

Reactive power

Figure 5(a)Determine the rms value of a saw tooth wave as shown in figure 5(b).

Figure 5(b)A series RLC circuit consists of resistance R = 20 ?, inductance, L=

?F. Calculate the frequency at resonance. If a 10 Volts of

frequency equal to the frequency of resonance is applied to this circuit, calculate

across C and L respectively. Find the frequencies at which

V

L

are maximum? .

R16

3 of 4

, and determine the (7M)

rrangement connected (7M) (7M)

0.01H and

10 Volts of

circuit, calculate

the frequencies at which (7M)

SET – 2

Code No: R161208

the power factor is 0.866 lag using locus diagram

7. a) Find the current flowing in the resistor R

resistance of 0.5 ? is inserted in series with R

theorem, the current that will flow through R

shown in figure 7(b).

the power factor is 0.866 lag using locus diagram.

Figure 6(b)Find the current flowing in the resistor R

4

of the network shown in figure 7(a)

is inserted in series with R

4

, find, using the compensation

theorem, the current that will flow through R

4?

Figure 7(a)Calculate the voltage V across the resistor R by using the superposition theorem

Figure 7(b).

4 of 4

R

1

=4? R

3

=8?

R

2

=16? R

4

=8?

12V

R16

evaluate the value of reactance when (7M)

ure 7(a). If a

find, using the compensation (7M)

Calculate the voltage V across the resistor R by using the superposition theorem as (7M)

SET – 2

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS (Electrical and Electronics Engineering

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question in

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) Distinguish between independent and dependent sources.

b) Draw the dual of the network shown

c) Explain the dot convention used in magnetically coupled circuits.

d) Find the response ?I? of an RL series circuit if R = 2

voltage, v(t) = 10 sin 3t.

e) Bring out the differences between series and parallel resonance

f) Obtain the Norton?s equivalent circuit with respect to the terminals AB for the

network shown in figure

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

Note: 1. Question Paper consists of two parts (Part-A and Part-

Answering the question in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

Distinguish between independent and dependent sources.

Draw the dual of the network shown in figure 1(b).

Figure 1(b)Explain the dot convention used in magnetically coupled circuits.

of an RL series circuit if R = 2?, L = 1H and the input

.

differences between series and parallel resonance.

s equivalent circuit with respect to the terminals AB for the

ure 1(f).

Figure 1(f)R16

1 of 4

I B. Tech II Semester Regular/Supplementary Examinations, April/May – 2018

Max. Marks: 70

-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (3M) (3M) (2M)

, L = 1H and the input (2M) (2M)

s equivalent circuit with respect to the terminals AB for the (2M)

SET – 3

Code No: R161208

2. a) Determine the current through 10

by using star-delta conversion

b) Write the mesh equation for the circuit shown in figure 2(b) and determine the

currents I

1

, I

2

and I

3

.

3. a) For the graph shown in fig

tie-set matrix.

4?

8?

12?

20A

PART ?B

Determine the current through 10-? resistance in the network shown in fig

conversion.

Figure 2(a)the mesh equation for the circuit shown in figure 2(b) and determine the

Figure 2(b)r the graph shown in figure 3(a) select a tree, identify the tie-sets and write the

Figure 3(a)

R16

2 of 4

? 24?

13?

30?

?

12?

10?

17?

30?

+ –

180V

3?

I

1

I

2

I

3

2?

20V

resistance in the network shown in figure 2(a) (7M)

the mesh equation for the circuit shown in figure 2(b) and determine the (7M)

sets and write the (7M)

SET – 3

?

4?

Code No: R161208

b) Draw the graph of the network shown in fig

matrix.

4. a) A rectangular core has a cross

materials: cast steel 50 cm and steel 40 cm long. It is desired to create a flux of 3

m wb in the core. The relative

steel is 2000. The coil has 300 turns. Find mmf and current in the coil.

b) Find the effective value of the inductance for the following connection

figure 4(b).

5. a) Calculate the average and rms value for a half

as shown in figure 5(a).

the network shown in figure 3(b) and write the incidence

Figure 3(b)A rectangular core has a cross-sectional area of 20 cm

2

. It is made from two

materials: cast steel 50 cm and steel 40 cm long. It is desired to create a flux of 3

m wb in the core. The relative permeability for cast steel is 500 and that of sheet

e coil has 300 turns. Find mmf and current in the coil.

Find the effective value of the inductance for the following connection

Figure 4(b)Calculate the average and rms value for a half-wave rectified sinusoidal quantity

.

Figure 5(a)3 of 4

R16

and write the incidence (7M)

. It is made from two

materials: cast steel 50 cm and steel 40 cm long. It is desired to create a flux of 3

permeability for cast steel is 500 and that of sheet (7M)

Find the effective value of the inductance for the following connection shown in (7M)

wave rectified sinusoidal quantity (7M)

SET – 3

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS (Electrical and Electronics Engineering

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question in

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) State and explain Kirchoff?s Laws

b) Define the following terms(i) Graph of a network (ii) Oriented graph

c) Find the effective value of the inductance for the

in figure 1(c).

d) Calculate the current drawn by impedance. Z = (30

?0

0

is applied across it.

e) A series RLC circuit has the following parameter values R = 10

C = 10 ?F. Find the Q factor of the circuit at resonance.

f) Is super position valid for power? Substantiate your answer

2. a) In the network shown in

zero current through the (2+j3) b)Determine the voltage V using source transformatio

circuit shown in figure 2(b)

30

3 ?

3 ?

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

1. Question Paper consists of two parts (Part-A and Part

Answering the question in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

State and explain Kirchoff?s Laws.

Define the following terms with example

Find the effective value of the inductance for the following connections

Figure 1(c)Calculate the current drawn by impedance. Z = (30- j70) ? when voltage, V = 120

F. Find the Q factor of the circuit at resonance.

Is super position valid for power? Substantiate your answer.

PART ?B

In the network shown in figure 2(a), determine the voltage V

b

which results in a

zero current through the (2+j3) ? impedance branch.

Figure 2(a)Determine the voltage V using source transformation and simplification

2(b).

1 of 3

2?

j3 ?

4?

j5 ? 6?

V

b

6?

6A

4?

V

__

+

8V

I B. Tech II Semester Regular/Supplementary Examinations, April/May – 2018

Max. Marks: 70

Part-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (3M) (2M)

following connections as shown (3M)

when voltage, V = 120 (2M)

= 0.01 H and (2M) (2M)

which results in a (9M)

n and simplification for the (5M)

SET – 1

V

__

+

Code No: R161208

Using the tie-set schedule obtain the loop equations

b) For the network shown in

m

2

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

flux of f = 4x 10

-4

wb. (b) Determine the values of

these conditions. Assume H for cast steel = 170 At/m.

b) Draw the dotted equivalent circuit for the net work shown in below fig

find the equivalent inductive reactance.

5. a) Two coils of impedance 25.23

across a 230V, 50Hz supply. Find the

active power.

b) Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero.

1

V

shown in figure 3(a), draw the graph and write a tie-

set schedule obtain the loop equations.

Figure 3(a)For the network shown in figure 3(b), draw the graph and show some possible trees

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

wb. (b) Determine the values of ? and ?

r

for the material under

these conditions. Assume H for cast steel = 170 At/m.

equivalent circuit for the net work shown in below fig

find the equivalent inductive reactance.

Figure 4(b)Two coils of impedance 25.23 ? 37

0

and 18.65 ? 68

0

ohms are connected in series

Hz supply. Find the total impedance, current, power factor, and

Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero.

2 of 3

R16

R

2

1

C

1

L

1

I

-set schedule. (10M)

draw the graph and show some possible trees. (4M)

section of the core is 2 x 10

-3

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

for the material under (8M)

equivalent circuit for the net work shown in below figure 4(b). and (6M)

nnected in series

total impedance, current, power factor, and (7M)

Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero. (7M)

SET – 1

R

3

Code No: R161208

6. a) For the circuit shown in figure 6(a). (i) Determine the KVL equations. (ii) Find the two loop currents I

1

, and I

2(iii) Find the power supplied by the source and the power dissipated in each resistor.

b) A coil of 20 ohm resistance and an inductance of 0.2 H are connected in parallel

with a capacitor of 100 ?F. Determine the resonant frequency and the input

impedance at resonance. (7M)

7. a) State and explain compensation theorem. (7M)

b) Find the value of R in the circuit shown in figure 7(b) such that maximum power

transfer takes place. What is the amount of this power?

Figure 7(b) (7M)

SET – 1

R16

+

–

3?

-j5?

-j2?

1?

j2?

2?

10

0

0 ? V

1? 5?

R

1? 4V

6V 2?

+

–

+

–

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS (Electrical and

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) Explain source transformation technique

b) Define the following terms(i) Graph of the Network and Sub(ii) Rank of graph.

c) Find the effective value of the inductance for the following connections

in figure 1(c).

d) A current I = 10?30

0

flows through an impedance, Z = 20

average power delivered to the impedance

e) A two element series circuit has a current of 4

when the voltage of 200 sin (2000t+50

Determine the values of elements.

f) State Maximum power transfer theorem

2. a) Determine the node voltages V1

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

Note: 1. Question Paper consists of two parts (Part-A and Part-

Answering the questions in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

Explain source transformation technique.

Define the following terms.

Graph of the Network and Sub graph.

effective value of the inductance for the following connections

Figure 1(c)flows through an impedance, Z = 20? – 22

0

average power delivered to the impedance.

ries circuit has a current of 4 cos (200t + 13.2

0

) amp flowing

when the voltage of 200 sin (2000t+50

0

) volts is applied across its terminals.

Determine the values of elements.

State Maximum power transfer theorem.

PART -B

voltages V1, V

2

, and V

3

for the circuit shown in figure

figure 2(a)R16

1 of 4

I B. Tech II Semester Regular/Supplementary Examinations, April/May – 2018

Max. Marks: 70

-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (2M) (3M)

effective value of the inductance for the following connections as shown (2M)

? find the (2M)

) amp flowing

is applied across its terminals. (3M) (2M)

ure 2(a). (7M)

SET – 2

Code No: R161208

b) Write the loop equations of the circuit

V

x

.

required for solving the

b) Determine the basic cut set

3(b) where in the elements 1,

4. a) A rectangular core has a cross

materials: cast steel 50 cm and steel 40 cm

mWb in the core. The relative permeability for cast steel is 500 and that of sheet

steel is 2000. The coil has 300 turns. Find mmf and current in the coil.

2?

2?

10

0

0 ? (V)Write the loop equations of the circuit as shown in figure 2(b) and find the

required for solving the network? Find the number of possible trees.

Figure 3(a)Determine the basic cut set matrix for the oriented graph given as shown figure

where in the elements 1, 2, 3 are tree branches.

Figure 3(b)A rectangular core has a cross-sectional area of 20 cm

2

. It is made from two

materials: cast steel 50 cm and steel 40 cm long. It is desired to create a flux of 3

mWb in the core. The relative permeability for cast steel is 500 and that of sheet

steel is 2000. The coil has 300 turns. Find mmf and current in the coil.

R16

2 of 4

j2?

10?

V

2?

j5?

?

?

j2?

5

0

30 ? (V)and find the voltage (7M)

make the graph and find one tree. How many mesh currents are (9M)

as shown figure (5M)

. It is made from two

long. It is desired to create a flux of 3

mWb in the core. The relative permeability for cast steel is 500 and that of sheet (7M)

SET – 2

10?

Code No: R161208

effective inductance.

5. a) The following circuit show

across 200V, 50Hz ac supply calculate(i) The current drawn from supply(ii) Apparent power(iii) Real power, and(iv) Reactive power

b) Determine the rms value of a saw tooth

6. a) A series RLC circuit consists of resistance R = 20

capacitance, C= 0.04?F

frequency equal to the frequency of resonance is applied to this

the values of V

C

and V

L

these voltages V

C

and V

L

Figure 4(b)The following circuit shown in figure 5(a) is a parallel RL arrangement connected

Hz ac supply calculate.

The current drawn from supply

Apparent power

Real power, and

Reactive power

Figure 5(a)Determine the rms value of a saw tooth wave as shown in figure 5(b).

Figure 5(b)A series RLC circuit consists of resistance R = 20 ?, inductance, L=

?F. Calculate the frequency at resonance. If a 10 Volts of

frequency equal to the frequency of resonance is applied to this circuit, calculate

across C and L respectively. Find the frequencies at which

V

L

are maximum? .

R16

3 of 4

, and determine the (7M)

rrangement connected (7M) (7M)

0.01H and

10 Volts of

circuit, calculate

the frequencies at which (7M)

SET – 2

Code No: R161208

the power factor is 0.866 lag using locus diagram

7. a) Find the current flowing in the resistor R

resistance of 0.5 ? is inserted in series with R

theorem, the current that will flow through R

shown in figure 7(b).

the power factor is 0.866 lag using locus diagram.

Figure 6(b)Find the current flowing in the resistor R

4

of the network shown in figure 7(a)

is inserted in series with R

4

, find, using the compensation

theorem, the current that will flow through R

4?

Figure 7(b).

4 of 4

R

1

=4? R

3

=8?

R

2

=16? R

4

=8?

12V

R16

evaluate the value of reactance when (7M)

ure 7(a). If a

find, using the compensation (7M)

Calculate the voltage V across the resistor R by using the superposition theorem as (7M)

SET – 2

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS (Electrical and Electronics Engineering

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question in

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) Distinguish between independent and dependent sources.

b) Draw the dual of the network shown

c) Explain the dot convention used in magnetically coupled circuits.

d) Find the response ?I? of an RL series circuit if R = 2

voltage, v(t) = 10 sin 3t.

e) Bring out the differences between series and parallel resonance

f) Obtain the Norton?s equivalent circuit with respect to the terminals AB for the

network shown in figure

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

Note: 1. Question Paper consists of two parts (Part-A and Part-

Answering the question in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

Distinguish between independent and dependent sources.

Draw the dual of the network shown in figure 1(b).

Figure 1(b)Explain the dot convention used in magnetically coupled circuits.

of an RL series circuit if R = 2?, L = 1H and the input

.

differences between series and parallel resonance.

s equivalent circuit with respect to the terminals AB for the

ure 1(f).

Figure 1(f)R16

1 of 4

I B. Tech II Semester Regular/Supplementary Examinations, April/May – 2018

Max. Marks: 70

-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (3M) (3M) (2M)

, L = 1H and the input (2M) (2M)

s equivalent circuit with respect to the terminals AB for the (2M)

SET – 3

Code No: R161208

2. a) Determine the current through 10

by using star-delta conversion

b) Write the mesh equation for the circuit shown in figure 2(b) and determine the

currents I

1

, I

2

and I

3

.

3. a) For the graph shown in fig

tie-set matrix.

4?

8?

12?

20A

PART ?B

Determine the current through 10-? resistance in the network shown in fig

conversion.

Figure 2(a)the mesh equation for the circuit shown in figure 2(b) and determine the

Figure 2(b)r the graph shown in figure 3(a) select a tree, identify the tie-sets and write the

Figure 3(a)

R16

2 of 4

? 24?

13?

30?

?

12?

10?

17?

30?

+ –

180V

3?

I

1

I

2

I

3

2?

20V

resistance in the network shown in figure 2(a) (7M)

the mesh equation for the circuit shown in figure 2(b) and determine the (7M)

sets and write the (7M)

SET – 3

?

4?

Code No: R161208

b) Draw the graph of the network shown in fig

matrix.

4. a) A rectangular core has a cross

materials: cast steel 50 cm and steel 40 cm long. It is desired to create a flux of 3

m wb in the core. The relative

steel is 2000. The coil has 300 turns. Find mmf and current in the coil.

b) Find the effective value of the inductance for the following connection

figure 4(b).

5. a) Calculate the average and rms value for a half

as shown in figure 5(a).

the network shown in figure 3(b) and write the incidence

Figure 3(b)A rectangular core has a cross-sectional area of 20 cm

2

. It is made from two

materials: cast steel 50 cm and steel 40 cm long. It is desired to create a flux of 3

m wb in the core. The relative permeability for cast steel is 500 and that of sheet

e coil has 300 turns. Find mmf and current in the coil.

Find the effective value of the inductance for the following connection

Figure 4(b)Calculate the average and rms value for a half-wave rectified sinusoidal quantity

.

Figure 5(a)3 of 4

R16

and write the incidence (7M)

. It is made from two

materials: cast steel 50 cm and steel 40 cm long. It is desired to create a flux of 3

permeability for cast steel is 500 and that of sheet (7M)

Find the effective value of the inductance for the following connection shown in (7M)

wave rectified sinusoidal quantity (7M)

SET – 3

Code No: R161208

b) Determine the total current supplied by the m

5(b).

6. a) A series RLC circuit is connected to a constant voltage variable frequency source

of 200 V (rms). The values of R,

be the voltage across C at

b) For the following circuit

using node voltage method. The source current is given as I

= 100 rad/s.

7.

a) Find the value of R in the circuit shown in

power transfer takes place. What is the amount of this power?

b) Find Thevenin?s equivalent about AB fo

1?

4V 2

+

–

10V

Determine the total current supplied by the mains for the network shown in figure

Figure 5(b)A series RLC circuit is connected to a constant voltage variable frequency source

of 200 V (rms). The values of R, L and C are 5 ?. 0.1 H and 100 ?F. What would

be the voltage across C at resonance?

For the following circuit shown in figure 6(b), find the node voltages V

using node voltage method. The source current is given as I

s(t) = 10 cos

Figure 6(b)Find the value of R in the circuit shown in below figure 7(a) such that maximum

power transfer takes place. What is the amount of this power?

Figure 7(a).

Find Thevenin?s equivalent about AB for the circuit shown in figure 7(b)

Figure 7(b).

4 of 4

5?

R

1? 2?

2?

2?

V

S

— +

4?

A

B

4?

4 V

S

R16

shown in figure (7M)

A series RLC circuit is connected to a constant voltage variable frequency source

?F. What would (7M)

voltages V

A

and V

B(t) = 10 cos ?t(A), ? (7M)

such that maximum (7M)

7(b). (7M)

6V

+

–

SET – 3

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS (Electrical and Electronics Engineering

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question in

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) State and explain Kirchoff?s Laws

b) Define the following terms(i) Graph of a network (ii) Oriented graph

c) Find the effective value of the inductance for the

in figure 1(c).

d) Calculate the current drawn by impedance. Z = (30

?0

0

is applied across it.

e) A series RLC circuit has the following parameter values R = 10

C = 10 ?F. Find the Q factor of the circuit at resonance.

f) Is super position valid for power? Substantiate your answer

2. a) In the network shown in

zero current through the (2+j3) b)Determine the voltage V using source transformatio

circuit shown in figure 2(b)

30

3 ?

3 ?

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

1. Question Paper consists of two parts (Part-A and Part

Answering the question in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

State and explain Kirchoff?s Laws.

Define the following terms with example

Find the effective value of the inductance for the following connections

Figure 1(c)Calculate the current drawn by impedance. Z = (30- j70) ? when voltage, V = 120

F. Find the Q factor of the circuit at resonance.

Is super position valid for power? Substantiate your answer.

PART ?B

In the network shown in figure 2(a), determine the voltage V

b

which results in a

zero current through the (2+j3) ? impedance branch.

Figure 2(a)Determine the voltage V using source transformation and simplification

2(b).

1 of 3

2?

j3 ?

4?

j5 ? 6?

V

b

6?

6A

4?

V

__

+

8V

I B. Tech II Semester Regular/Supplementary Examinations, April/May – 2018

Max. Marks: 70

Part-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (3M) (2M)

following connections as shown (3M)

when voltage, V = 120 (2M)

= 0.01 H and (2M) (2M)

which results in a (9M)

n and simplification for the (5M)

SET – 1

V

__

+

Code No: R161208

Using the tie-set schedule obtain the loop equations

b) For the network shown in

m

2

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

flux of f = 4x 10

-4

wb. (b) Determine the values of

these conditions. Assume H for cast steel = 170 At/m.

b) Draw the dotted equivalent circuit for the net work shown in below fig

find the equivalent inductive reactance.

5. a) Two coils of impedance 25.23

across a 230V, 50Hz supply. Find the

active power.

b) Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero.

1

V

shown in figure 3(a), draw the graph and write a tie-

set schedule obtain the loop equations.

Figure 3(a)For the network shown in figure 3(b), draw the graph and show some possible trees

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

wb. (b) Determine the values of ? and ?

r

for the material under

these conditions. Assume H for cast steel = 170 At/m.

equivalent circuit for the net work shown in below fig

find the equivalent inductive reactance.

Figure 4(b)Two coils of impedance 25.23 ? 37

0

and 18.65 ? 68

0

ohms are connected in series

Hz supply. Find the total impedance, current, power factor, and

Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero.

2 of 3

R16

R

2

1

C

1

L

1

I

-set schedule. (10M)

draw the graph and show some possible trees. (4M)

section of the core is 2 x 10

-3

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

for the material under (8M)

equivalent circuit for the net work shown in below figure 4(b). and (6M)

nnected in series

total impedance, current, power factor, and (7M)

Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero. (7M)

SET – 1

R

3

Code No: R161208

6. a) For the circuit shown in figure 6(a). (i) Determine the KVL equations. (ii) Find the two loop currents I

1

, and I

2(iii) Find the power supplied by the source and the power dissipated in each resistor.

b) A coil of 20 ohm resistance and an inductance of 0.2 H are connected in parallel

with a capacitor of 100 ?F. Determine the resonant frequency and the input

impedance at resonance. (7M)

7. a) State and explain compensation theorem. (7M)

b) Find the value of R in the circuit shown in figure 7(b) such that maximum power

transfer takes place. What is the amount of this power?

Figure 7(b) (7M)

SET – 1

R16

+

–

3?

-j5?

-j2?

1?

j2?

2?

10

0

0 ? V

1? 5?

R

1? 4V

6V 2?

+

–

+

–

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS (Electrical and

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) Explain source transformation technique

b) Define the following terms(i) Graph of the Network and Sub(ii) Rank of graph.

c) Find the effective value of the inductance for the following connections

in figure 1(c).

d) A current I = 10?30

0

flows through an impedance, Z = 20

average power delivered to the impedance

e) A two element series circuit has a current of 4

when the voltage of 200 sin (2000t+50

Determine the values of elements.

f) State Maximum power transfer theorem

2. a) Determine the node voltages V1

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

Note: 1. Question Paper consists of two parts (Part-A and Part-

Answering the questions in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

Explain source transformation technique.

Define the following terms.

Graph of the Network and Sub graph.

effective value of the inductance for the following connections

Figure 1(c)flows through an impedance, Z = 20? – 22

0

average power delivered to the impedance.

ries circuit has a current of 4 cos (200t + 13.2

0

) amp flowing

when the voltage of 200 sin (2000t+50

0

) volts is applied across its terminals.

Determine the values of elements.

State Maximum power transfer theorem.

PART -B

voltages V1, V

2

, and V

3

for the circuit shown in figure

figure 2(a)R16

1 of 4

I B. Tech II Semester Regular/Supplementary Examinations, April/May – 2018

Max. Marks: 70

-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (2M) (3M)

effective value of the inductance for the following connections as shown (2M)

? find the (2M)

) amp flowing

is applied across its terminals. (3M) (2M)

ure 2(a). (7M)

SET – 2

Code No: R161208

b) Write the loop equations of the circuit

V

x

.

required for solving the

b) Determine the basic cut set

3(b) where in the elements 1,

4. a) A rectangular core has a cross

materials: cast steel 50 cm and steel 40 cm

mWb in the core. The relative permeability for cast steel is 500 and that of sheet

steel is 2000. The coil has 300 turns. Find mmf and current in the coil.

2?

2?

10

0

0 ? (V)Write the loop equations of the circuit as shown in figure 2(b) and find the

required for solving the network? Find the number of possible trees.

Figure 3(a)Determine the basic cut set matrix for the oriented graph given as shown figure

where in the elements 1, 2, 3 are tree branches.

Figure 3(b)A rectangular core has a cross-sectional area of 20 cm

2

. It is made from two

materials: cast steel 50 cm and steel 40 cm long. It is desired to create a flux of 3

mWb in the core. The relative permeability for cast steel is 500 and that of sheet

steel is 2000. The coil has 300 turns. Find mmf and current in the coil.

R16

2 of 4

j2?

10?

V

2?

j5?

?

?

j2?

5

0

30 ? (V)and find the voltage (7M)

make the graph and find one tree. How many mesh currents are (9M)

as shown figure (5M)

. It is made from two

long. It is desired to create a flux of 3

mWb in the core. The relative permeability for cast steel is 500 and that of sheet (7M)

SET – 2

10?

Code No: R161208

effective inductance.

5. a) The following circuit show

across 200V, 50Hz ac supply calculate(i) The current drawn from supply(ii) Apparent power(iii) Real power, and(iv) Reactive power

b) Determine the rms value of a saw tooth

6. a) A series RLC circuit consists of resistance R = 20

capacitance, C= 0.04?F

frequency equal to the frequency of resonance is applied to this

the values of V

C

and V

L

these voltages V

C

and V

L

Figure 4(b)The following circuit shown in figure 5(a) is a parallel RL arrangement connected

Hz ac supply calculate.

The current drawn from supply

Apparent power

Real power, and

Reactive power

Figure 5(a)Determine the rms value of a saw tooth wave as shown in figure 5(b).

Figure 5(b)A series RLC circuit consists of resistance R = 20 ?, inductance, L=

?F. Calculate the frequency at resonance. If a 10 Volts of

frequency equal to the frequency of resonance is applied to this circuit, calculate

across C and L respectively. Find the frequencies at which

V

L

are maximum? .

R16

3 of 4

, and determine the (7M)

rrangement connected (7M) (7M)

0.01H and

10 Volts of

circuit, calculate

the frequencies at which (7M)

SET – 2

Code No: R161208

the power factor is 0.866 lag using locus diagram

7. a) Find the current flowing in the resistor R

resistance of 0.5 ? is inserted in series with R

theorem, the current that will flow through R

shown in figure 7(b).

the power factor is 0.866 lag using locus diagram.

Figure 6(b)Find the current flowing in the resistor R

4

of the network shown in figure 7(a)

is inserted in series with R

4

, find, using the compensation

theorem, the current that will flow through R

4?

Figure 7(b).

4 of 4

R

1

=4? R

3

=8?

R

2

=16? R

4

=8?

12V

R16

evaluate the value of reactance when (7M)

ure 7(a). If a

find, using the compensation (7M)

Calculate the voltage V across the resistor R by using the superposition theorem as (7M)

SET – 2

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS (Electrical and Electronics Engineering

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question in

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) Distinguish between independent and dependent sources.

b) Draw the dual of the network shown

c) Explain the dot convention used in magnetically coupled circuits.

d) Find the response ?I? of an RL series circuit if R = 2

voltage, v(t) = 10 sin 3t.

e) Bring out the differences between series and parallel resonance

f) Obtain the Norton?s equivalent circuit with respect to the terminals AB for the

network shown in figure

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

Note: 1. Question Paper consists of two parts (Part-A and Part-

Answering the question in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

Distinguish between independent and dependent sources.

Draw the dual of the network shown in figure 1(b).

Figure 1(b)Explain the dot convention used in magnetically coupled circuits.

of an RL series circuit if R = 2?, L = 1H and the input

.

differences between series and parallel resonance.

s equivalent circuit with respect to the terminals AB for the

ure 1(f).

Figure 1(f)R16

1 of 4

I B. Tech II Semester Regular/Supplementary Examinations, April/May – 2018

Max. Marks: 70

-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (3M) (3M) (2M)

, L = 1H and the input (2M) (2M)

s equivalent circuit with respect to the terminals AB for the (2M)

SET – 3

Code No: R161208

2. a) Determine the current through 10

by using star-delta conversion

currents I

1

, I

2

and I

3

.

3. a) For the graph shown in fig

tie-set matrix.

4?

8?

12?

20A

PART ?B

Determine the current through 10-? resistance in the network shown in fig

conversion.

Figure 2(b)r the graph shown in figure 3(a) select a tree, identify the tie-sets and write the

Figure 3(a)

R16

2 of 4

? 24?

13?

30?

?

12?

10?

17?

30?

+ –

180V

3?

I

1

I

2

I

3

2?

20V

resistance in the network shown in figure 2(a) (7M)

the mesh equation for the circuit shown in figure 2(b) and determine the (7M)

sets and write the (7M)

SET – 3

?

4?

Code No: R161208

b) Draw the graph of the network shown in fig

matrix.

4. a) A rectangular core has a cross

materials: cast steel 50 cm and steel 40 cm long. It is desired to create a flux of 3

m wb in the core. The relative

steel is 2000. The coil has 300 turns. Find mmf and current in the coil.

b) Find the effective value of the inductance for the following connection

figure 4(b).

5. a) Calculate the average and rms value for a half

as shown in figure 5(a).

the network shown in figure 3(b) and write the incidence

Figure 3(b)A rectangular core has a cross-sectional area of 20 cm

2

. It is made from two

materials: cast steel 50 cm and steel 40 cm long. It is desired to create a flux of 3

m wb in the core. The relative permeability for cast steel is 500 and that of sheet

e coil has 300 turns. Find mmf and current in the coil.

Find the effective value of the inductance for the following connection

Figure 4(b)Calculate the average and rms value for a half-wave rectified sinusoidal quantity

.

Figure 5(a)3 of 4

R16

and write the incidence (7M)

. It is made from two

materials: cast steel 50 cm and steel 40 cm long. It is desired to create a flux of 3

permeability for cast steel is 500 and that of sheet (7M)

Find the effective value of the inductance for the following connection shown in (7M)

wave rectified sinusoidal quantity (7M)

SET – 3

Code No: R161208

b) Determine the total current supplied by the m

5(b).

6. a) A series RLC circuit is connected to a constant voltage variable frequency source

of 200 V (rms). The values of R,

be the voltage across C at

b) For the following circuit

using node voltage method. The source current is given as I

= 100 rad/s.

7.

a) Find the value of R in the circuit shown in

power transfer takes place. What is the amount of this power?

b) Find Thevenin?s equivalent about AB fo

1?

4V 2

+

–

10V

Determine the total current supplied by the mains for the network shown in figure

Figure 5(b)A series RLC circuit is connected to a constant voltage variable frequency source

of 200 V (rms). The values of R, L and C are 5 ?. 0.1 H and 100 ?F. What would

be the voltage across C at resonance?

For the following circuit shown in figure 6(b), find the node voltages V

using node voltage method. The source current is given as I

s(t) = 10 cos

Figure 6(b)Find the value of R in the circuit shown in below figure 7(a) such that maximum

power transfer takes place. What is the amount of this power?

Figure 7(a).

Find Thevenin?s equivalent about AB for the circuit shown in figure 7(b)

Figure 7(b).

4 of 4

5?

R

1? 2?

2?

2?

V

S

— +

4?

A

B

4?

4 V

S

R16

shown in figure (7M)

A series RLC circuit is connected to a constant voltage variable frequency source

?F. What would (7M)

voltages V

A

and V

B(t) = 10 cos ?t(A), ? (7M)

such that maximum (7M)

7(b). (7M)

6V

+

–

SET – 3

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations,

ELECTRICAL CIRCUIT ANALYSIS (Electrical and Electronics Engineering

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question in

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) Explain the volt ampere relationships for R,L and C parameters

b) Determine the basic cut set matrix for the oriented graph given

in the elements 1,2,3 are tree branches

c) Explain the dot connection used in magnetically coupled circuits (mutual

inductances) with the help of

d) Explain the concept of phase angle and phase difference.

e) Two coils of impedance 25.23

across a 230V, 50Hz supply. Find the total impedance

f) State Thevenin?s theorem

2. a) Use nodal analysis to find the voltages V

figure 2(a), in which I

1

= 0.4A

+

V

A

l

1

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

Note: 1. Question Paper consists of two parts (Part-A and Part-

Answering the question in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

the volt ampere relationships for R,L and C parameters.

Determine the basic cut set matrix for the oriented graph given figure 1(b)in the elements 1,2,3 are tree branches.

Figure 1(b)Explain the dot connection used in magnetically coupled circuits (mutual

inductances) with the help of suitable examples.

Explain the concept of phase angle and phase difference.

Two coils of impedance 25.23 ? 37

0

and 18.65 ? 68

0

ohms are connected in series

Hz supply. Find the total impedance.

Thevenin?s theorem.

PART ?B

Use nodal analysis to find the voltages V

A

, V

B

, and V

C

for the circuit shown in

= 0.4A.

Figure 2(a)R16

1 of 4

+

+

20 ?

100 ?

40 ?

40 ?

l

y

80 l

y

V

X

V

B

0.03 V

X

C

April/May – 2018

Max. Marks: 70

-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (2M)

figure 1(b) where (3M)

Explain the dot connection used in magnetically coupled circuits (mutual (2M) (3M)

nnected in series (2M) (2M)

circuit shown in (7 M)

SET – 4

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS (Electrical and Electronics Engineering

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question in

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) State and explain Kirchoff?s Laws

b) Define the following terms(i) Graph of a network (ii) Oriented graph

c) Find the effective value of the inductance for the

in figure 1(c).

d) Calculate the current drawn by impedance. Z = (30

?0

0

is applied across it.

e) A series RLC circuit has the following parameter values R = 10

C = 10 ?F. Find the Q factor of the circuit at resonance.

f) Is super position valid for power? Substantiate your answer

2. a) In the network shown in

zero current through the (2+j3) b)Determine the voltage V using source transformatio

circuit shown in figure 2(b)

30

3 ?

3 ?

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

1. Question Paper consists of two parts (Part-A and Part

Answering the question in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

State and explain Kirchoff?s Laws.

Define the following terms with example

Find the effective value of the inductance for the following connections

Figure 1(c)Calculate the current drawn by impedance. Z = (30- j70) ? when voltage, V = 120

F. Find the Q factor of the circuit at resonance.

Is super position valid for power? Substantiate your answer.

PART ?B

In the network shown in figure 2(a), determine the voltage V

b

which results in a

zero current through the (2+j3) ? impedance branch.

Figure 2(a)Determine the voltage V using source transformation and simplification

2(b).

1 of 3

2?

j3 ?

4?

j5 ? 6?

V

b

6?

6A

4?

V

__

+

8V

I B. Tech II Semester Regular/Supplementary Examinations, April/May – 2018

Max. Marks: 70

Part-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (3M) (2M)

following connections as shown (3M)

when voltage, V = 120 (2M)

= 0.01 H and (2M) (2M)

which results in a (9M)

n and simplification for the (5M)

SET – 1

V

__

+

Code No: R161208

Using the tie-set schedule obtain the loop equations

b) For the network shown in

m

2

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

flux of f = 4x 10

-4

wb. (b) Determine the values of

these conditions. Assume H for cast steel = 170 At/m.

b) Draw the dotted equivalent circuit for the net work shown in below fig

find the equivalent inductive reactance.

5. a) Two coils of impedance 25.23

across a 230V, 50Hz supply. Find the

active power.

b) Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero.

1

V

shown in figure 3(a), draw the graph and write a tie-

set schedule obtain the loop equations.

Figure 3(a)For the network shown in figure 3(b), draw the graph and show some possible trees

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

wb. (b) Determine the values of ? and ?

r

for the material under

these conditions. Assume H for cast steel = 170 At/m.

equivalent circuit for the net work shown in below fig

find the equivalent inductive reactance.

Figure 4(b)Two coils of impedance 25.23 ? 37

0

and 18.65 ? 68

0

ohms are connected in series

Hz supply. Find the total impedance, current, power factor, and

Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero.

2 of 3

R16

R

2

1

C

1

L

1

I

-set schedule. (10M)

draw the graph and show some possible trees. (4M)

section of the core is 2 x 10

-3

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

for the material under (8M)

equivalent circuit for the net work shown in below figure 4(b). and (6M)

nnected in series

total impedance, current, power factor, and (7M)

Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero. (7M)

SET – 1

R

3

Code No: R161208

6. a) For the circuit shown in figure 6(a). (i) Determine the KVL equations. (ii) Find the two loop currents I

1

, and I

2(iii) Find the power supplied by the source and the power dissipated in each resistor.

b) A coil of 20 ohm resistance and an inductance of 0.2 H are connected in parallel

with a capacitor of 100 ?F. Determine the resonant frequency and the input

impedance at resonance. (7M)

7. a) State and explain compensation theorem. (7M)

b) Find the value of R in the circuit shown in figure 7(b) such that maximum power

transfer takes place. What is the amount of this power?

Figure 7(b) (7M)

SET – 1

R16

+

–

3?

-j5?

-j2?

1?

j2?

2?

10

0

0 ? V

1? 5?

R

1? 4V

6V 2?

+

–

+

–

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS (Electrical and

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) Explain source transformation technique

b) Define the following terms(i) Graph of the Network and Sub(ii) Rank of graph.

c) Find the effective value of the inductance for the following connections

in figure 1(c).

d) A current I = 10?30

0

flows through an impedance, Z = 20

average power delivered to the impedance

e) A two element series circuit has a current of 4

when the voltage of 200 sin (2000t+50

Determine the values of elements.

f) State Maximum power transfer theorem

2. a) Determine the node voltages V1

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

Note: 1. Question Paper consists of two parts (Part-A and Part-

Answering the questions in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

Explain source transformation technique.

Define the following terms.

Graph of the Network and Sub graph.

effective value of the inductance for the following connections

Figure 1(c)flows through an impedance, Z = 20? – 22

0

average power delivered to the impedance.

ries circuit has a current of 4 cos (200t + 13.2

0

) amp flowing

when the voltage of 200 sin (2000t+50

0

) volts is applied across its terminals.

Determine the values of elements.

State Maximum power transfer theorem.

PART -B

voltages V1, V

2

, and V

3

for the circuit shown in figure

figure 2(a)R16

1 of 4

I B. Tech II Semester Regular/Supplementary Examinations, April/May – 2018

Max. Marks: 70

-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (2M) (3M)

effective value of the inductance for the following connections as shown (2M)

? find the (2M)

) amp flowing

is applied across its terminals. (3M) (2M)

ure 2(a). (7M)

SET – 2

Code No: R161208

b) Write the loop equations of the circuit

V

x

.

required for solving the

b) Determine the basic cut set

3(b) where in the elements 1,

4. a) A rectangular core has a cross

materials: cast steel 50 cm and steel 40 cm

mWb in the core. The relative permeability for cast steel is 500 and that of sheet

steel is 2000. The coil has 300 turns. Find mmf and current in the coil.

2?

2?

10

0

0 ? (V)Write the loop equations of the circuit as shown in figure 2(b) and find the

required for solving the network? Find the number of possible trees.

Figure 3(a)Determine the basic cut set matrix for the oriented graph given as shown figure

where in the elements 1, 2, 3 are tree branches.

Figure 3(b)A rectangular core has a cross-sectional area of 20 cm

2

. It is made from two

materials: cast steel 50 cm and steel 40 cm long. It is desired to create a flux of 3

mWb in the core. The relative permeability for cast steel is 500 and that of sheet

steel is 2000. The coil has 300 turns. Find mmf and current in the coil.

R16

2 of 4

j2?

10?

V

2?

j5?

?

?

j2?

5

0

30 ? (V)and find the voltage (7M)

make the graph and find one tree. How many mesh currents are (9M)

as shown figure (5M)

. It is made from two

long. It is desired to create a flux of 3

mWb in the core. The relative permeability for cast steel is 500 and that of sheet (7M)

SET – 2

10?

Code No: R161208

effective inductance.

5. a) The following circuit show

across 200V, 50Hz ac supply calculate(i) The current drawn from supply(ii) Apparent power(iii) Real power, and(iv) Reactive power

b) Determine the rms value of a saw tooth

6. a) A series RLC circuit consists of resistance R = 20

capacitance, C= 0.04?F

frequency equal to the frequency of resonance is applied to this

the values of V

C

and V

L

these voltages V

C

and V

L

Figure 4(b)The following circuit shown in figure 5(a) is a parallel RL arrangement connected

Hz ac supply calculate.

The current drawn from supply

Apparent power

Real power, and

Reactive power

Figure 5(a)Determine the rms value of a saw tooth wave as shown in figure 5(b).

Figure 5(b)A series RLC circuit consists of resistance R = 20 ?, inductance, L=

?F. Calculate the frequency at resonance. If a 10 Volts of

frequency equal to the frequency of resonance is applied to this circuit, calculate

across C and L respectively. Find the frequencies at which

V

L

are maximum? .

R16

3 of 4

, and determine the (7M)

rrangement connected (7M) (7M)

0.01H and

10 Volts of

circuit, calculate

the frequencies at which (7M)

SET – 2

Code No: R161208

the power factor is 0.866 lag using locus diagram

7. a) Find the current flowing in the resistor R

resistance of 0.5 ? is inserted in series with R

theorem, the current that will flow through R

shown in figure 7(b).

the power factor is 0.866 lag using locus diagram.

Figure 6(b)Find the current flowing in the resistor R

4

of the network shown in figure 7(a)

is inserted in series with R

4

, find, using the compensation

theorem, the current that will flow through R

4?

Figure 7(b).

4 of 4

R

1

=4? R

3

=8?

R

2

=16? R

4

=8?

12V

R16

evaluate the value of reactance when (7M)

ure 7(a). If a

find, using the compensation (7M)

Calculate the voltage V across the resistor R by using the superposition theorem as (7M)

SET – 2

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS (Electrical and Electronics Engineering

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question in

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) Distinguish between independent and dependent sources.

b) Draw the dual of the network shown

c) Explain the dot convention used in magnetically coupled circuits.

d) Find the response ?I? of an RL series circuit if R = 2

voltage, v(t) = 10 sin 3t.

e) Bring out the differences between series and parallel resonance

f) Obtain the Norton?s equivalent circuit with respect to the terminals AB for the

network shown in figure

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

Note: 1. Question Paper consists of two parts (Part-A and Part-

Answering the question in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

Distinguish between independent and dependent sources.

Draw the dual of the network shown in figure 1(b).

Figure 1(b)Explain the dot convention used in magnetically coupled circuits.

of an RL series circuit if R = 2?, L = 1H and the input

.

differences between series and parallel resonance.

s equivalent circuit with respect to the terminals AB for the

ure 1(f).

Figure 1(f)R16

1 of 4

I B. Tech II Semester Regular/Supplementary Examinations, April/May – 2018

Max. Marks: 70

-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (3M) (3M) (2M)

, L = 1H and the input (2M) (2M)

s equivalent circuit with respect to the terminals AB for the (2M)

SET – 3

Code No: R161208

2. a) Determine the current through 10

by using star-delta conversion

currents I

1

, I

2

and I

3

.

3. a) For the graph shown in fig

tie-set matrix.

4?

8?

12?

20A

PART ?B

Determine the current through 10-? resistance in the network shown in fig

conversion.

Figure 2(b)r the graph shown in figure 3(a) select a tree, identify the tie-sets and write the

Figure 3(a)

R16

2 of 4

? 24?

13?

30?

?

12?

10?

17?

30?

+ –

180V

3?

I

1

I

2

I

3

2?

20V

the mesh equation for the circuit shown in figure 2(b) and determine the (7M)

sets and write the (7M)

SET – 3

?

4?

Code No: R161208

b) Draw the graph of the network shown in fig

matrix.

4. a) A rectangular core has a cross

materials: cast steel 50 cm and steel 40 cm long. It is desired to create a flux of 3

m wb in the core. The relative

steel is 2000. The coil has 300 turns. Find mmf and current in the coil.

b) Find the effective value of the inductance for the following connection

figure 4(b).

5. a) Calculate the average and rms value for a half

as shown in figure 5(a).

Figure 3(b)A rectangular core has a cross-sectional area of 20 cm

2

. It is made from two

materials: cast steel 50 cm and steel 40 cm long. It is desired to create a flux of 3

m wb in the core. The relative permeability for cast steel is 500 and that of sheet

e coil has 300 turns. Find mmf and current in the coil.

Find the effective value of the inductance for the following connection

Figure 4(b)Calculate the average and rms value for a half-wave rectified sinusoidal quantity

.

Figure 5(a)3 of 4

R16

and write the incidence (7M)

. It is made from two

materials: cast steel 50 cm and steel 40 cm long. It is desired to create a flux of 3

permeability for cast steel is 500 and that of sheet (7M)

Find the effective value of the inductance for the following connection shown in (7M)

wave rectified sinusoidal quantity (7M)

SET – 3

Code No: R161208

b) Determine the total current supplied by the m

5(b).

6. a) A series RLC circuit is connected to a constant voltage variable frequency source

of 200 V (rms). The values of R,

be the voltage across C at

b) For the following circuit

using node voltage method. The source current is given as I

= 100 rad/s.

7.

a) Find the value of R in the circuit shown in

power transfer takes place. What is the amount of this power?

b) Find Thevenin?s equivalent about AB fo

1?

4V 2

+

–

10V

Determine the total current supplied by the mains for the network shown in figure

Figure 5(b)A series RLC circuit is connected to a constant voltage variable frequency source

of 200 V (rms). The values of R, L and C are 5 ?. 0.1 H and 100 ?F. What would

be the voltage across C at resonance?

For the following circuit shown in figure 6(b), find the node voltages V

using node voltage method. The source current is given as I

s(t) = 10 cos

Figure 6(b)Find the value of R in the circuit shown in below figure 7(a) such that maximum

power transfer takes place. What is the amount of this power?

Figure 7(a).

Find Thevenin?s equivalent about AB for the circuit shown in figure 7(b)

Figure 7(b).

4 of 4

5?

R

1? 2?

2?

2?

V

S

— +

4?

A

B

4?

4 V

S

R16

shown in figure (7M)

A series RLC circuit is connected to a constant voltage variable frequency source

?F. What would (7M)

voltages V

A

and V

B(t) = 10 cos ?t(A), ? (7M)

such that maximum (7M)

7(b). (7M)

6V

+

–

SET – 3

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations,

ELECTRICAL CIRCUIT ANALYSIS (Electrical and Electronics Engineering

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question in

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) Explain the volt ampere relationships for R,L and C parameters

b) Determine the basic cut set matrix for the oriented graph given

in the elements 1,2,3 are tree branches

c) Explain the dot connection used in magnetically coupled circuits (mutual

inductances) with the help of

d) Explain the concept of phase angle and phase difference.

e) Two coils of impedance 25.23

across a 230V, 50Hz supply. Find the total impedance

f) State Thevenin?s theorem

2. a) Use nodal analysis to find the voltages V

figure 2(a), in which I

1

= 0.4A

+

V

A

l

1

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

Note: 1. Question Paper consists of two parts (Part-A and Part-

Answering the question in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

the volt ampere relationships for R,L and C parameters.

Determine the basic cut set matrix for the oriented graph given figure 1(b)in the elements 1,2,3 are tree branches.

Figure 1(b)Explain the dot connection used in magnetically coupled circuits (mutual

inductances) with the help of suitable examples.

Explain the concept of phase angle and phase difference.

Two coils of impedance 25.23 ? 37

0

and 18.65 ? 68

0

ohms are connected in series

Hz supply. Find the total impedance.

Thevenin?s theorem.

PART ?B

Use nodal analysis to find the voltages V

A

, V

B

, and V

C

for the circuit shown in

= 0.4A.

Figure 2(a)R16

1 of 4

+

+

20 ?

100 ?

40 ?

40 ?

l

y

80 l

y

V

X

V

B

0.03 V

X

C

April/May – 2018

Max. Marks: 70

-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (2M)

figure 1(b) where (3M)

Explain the dot connection used in magnetically coupled circuits (mutual (2M) (3M)

nnected in series (2M) (2M)

circuit shown in (7 M)

SET – 4

b)Code No: R161208

Determine the current through 10-? resistance in the network shown in figure 2(b)by using star-delta conversion.

Figure 2(b) (7M)

3. a) For the network shown in figure 3(a) draw the graph and show some possible

trees.

Figure 3(a) (7M)

b) Obtain the fundamental cut set matrix by choosing a suitable T (1,6,7) of the given

graph shown in figure 3(b).

Figure 3(b) (7M)

4. a) A coil of 500 turns is wound uniformly over a wooden ring having a mean

circumference of 50 cm and a cross sectional area of 500 mm

2

. If the current

through the coil is 3 A, calculate (i) The magnetic field strength (ii) The flux density and (iii) The total flux

(7M)

2 of 4

4? 24?

13?

30? 8?

12?

12?

10?

17?

30?

+ –

180V

SET – 4

R16

R

2

R

1

R

3

C

1

L

1

V

I

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS (Electrical and Electronics Engineering

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question in

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) State and explain Kirchoff?s Laws

b) Define the following terms(i) Graph of a network (ii) Oriented graph

c) Find the effective value of the inductance for the

in figure 1(c).

d) Calculate the current drawn by impedance. Z = (30

?0

0

is applied across it.

e) A series RLC circuit has the following parameter values R = 10

C = 10 ?F. Find the Q factor of the circuit at resonance.

f) Is super position valid for power? Substantiate your answer

2. a) In the network shown in

zero current through the (2+j3) b)Determine the voltage V using source transformatio

circuit shown in figure 2(b)

30

3 ?

3 ?

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

1. Question Paper consists of two parts (Part-A and Part

Answering the question in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

State and explain Kirchoff?s Laws.

Define the following terms with example

Find the effective value of the inductance for the following connections

Figure 1(c)Calculate the current drawn by impedance. Z = (30- j70) ? when voltage, V = 120

F. Find the Q factor of the circuit at resonance.

Is super position valid for power? Substantiate your answer.

PART ?B

In the network shown in figure 2(a), determine the voltage V

b

which results in a

zero current through the (2+j3) ? impedance branch.

Figure 2(a)Determine the voltage V using source transformation and simplification

2(b).

1 of 3

2?

j3 ?

4?

j5 ? 6?

V

b

6?

6A

4?

V

__

+

8V

I B. Tech II Semester Regular/Supplementary Examinations, April/May – 2018

Max. Marks: 70

Part-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (3M) (2M)

following connections as shown (3M)

when voltage, V = 120 (2M)

= 0.01 H and (2M) (2M)

which results in a (9M)

n and simplification for the (5M)

SET – 1

V

__

+

Code No: R161208

Using the tie-set schedule obtain the loop equations

b) For the network shown in

m

2

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

flux of f = 4x 10

-4

wb. (b) Determine the values of

these conditions. Assume H for cast steel = 170 At/m.

b) Draw the dotted equivalent circuit for the net work shown in below fig

find the equivalent inductive reactance.

5. a) Two coils of impedance 25.23

across a 230V, 50Hz supply. Find the

active power.

b) Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero.

1

V

shown in figure 3(a), draw the graph and write a tie-

set schedule obtain the loop equations.

Figure 3(a)For the network shown in figure 3(b), draw the graph and show some possible trees

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

wb. (b) Determine the values of ? and ?

r

for the material under

these conditions. Assume H for cast steel = 170 At/m.

equivalent circuit for the net work shown in below fig

find the equivalent inductive reactance.

Figure 4(b)Two coils of impedance 25.23 ? 37

0

and 18.65 ? 68

0

ohms are connected in series

Hz supply. Find the total impedance, current, power factor, and

Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero.

2 of 3

R16

R

2

1

C

1

L

1

I

-set schedule. (10M)

draw the graph and show some possible trees. (4M)

section of the core is 2 x 10

-3

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

for the material under (8M)

equivalent circuit for the net work shown in below figure 4(b). and (6M)

nnected in series

total impedance, current, power factor, and (7M)

Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero. (7M)

SET – 1

R

3

Code No: R161208

6. a) For the circuit shown in figure 6(a). (i) Determine the KVL equations. (ii) Find the two loop currents I

1

, and I

2(iii) Find the power supplied by the source and the power dissipated in each resistor.

b) A coil of 20 ohm resistance and an inductance of 0.2 H are connected in parallel

with a capacitor of 100 ?F. Determine the resonant frequency and the input

impedance at resonance. (7M)

7. a) State and explain compensation theorem. (7M)

b) Find the value of R in the circuit shown in figure 7(b) such that maximum power

transfer takes place. What is the amount of this power?

Figure 7(b) (7M)

SET – 1

R16

+

–

3?

-j5?

-j2?

1?

j2?

2?

10

0

0 ? V

1? 5?

R

1? 4V

6V 2?

+

–

+

–

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS (Electrical and

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) Explain source transformation technique

b) Define the following terms(i) Graph of the Network and Sub(ii) Rank of graph.

c) Find the effective value of the inductance for the following connections

in figure 1(c).

d) A current I = 10?30

0

flows through an impedance, Z = 20

average power delivered to the impedance

e) A two element series circuit has a current of 4

when the voltage of 200 sin (2000t+50

Determine the values of elements.

f) State Maximum power transfer theorem

2. a) Determine the node voltages V1

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

Note: 1. Question Paper consists of two parts (Part-A and Part-

Answering the questions in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

Explain source transformation technique.

Define the following terms.

Graph of the Network and Sub graph.

effective value of the inductance for the following connections

Figure 1(c)flows through an impedance, Z = 20? – 22

0

average power delivered to the impedance.

ries circuit has a current of 4 cos (200t + 13.2

0

) amp flowing

when the voltage of 200 sin (2000t+50

0

) volts is applied across its terminals.

Determine the values of elements.

State Maximum power transfer theorem.

PART -B

voltages V1, V

2

, and V

3

for the circuit shown in figure

figure 2(a)R16

1 of 4

I B. Tech II Semester Regular/Supplementary Examinations, April/May – 2018

Max. Marks: 70

-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (2M) (3M)

effective value of the inductance for the following connections as shown (2M)

? find the (2M)

) amp flowing

is applied across its terminals. (3M) (2M)

ure 2(a). (7M)

SET – 2

Code No: R161208

b) Write the loop equations of the circuit

V

x

.

required for solving the

b) Determine the basic cut set

3(b) where in the elements 1,

4. a) A rectangular core has a cross

materials: cast steel 50 cm and steel 40 cm

mWb in the core. The relative permeability for cast steel is 500 and that of sheet

steel is 2000. The coil has 300 turns. Find mmf and current in the coil.

2?

2?

10

0

0 ? (V)Write the loop equations of the circuit as shown in figure 2(b) and find the

required for solving the network? Find the number of possible trees.

Figure 3(a)Determine the basic cut set matrix for the oriented graph given as shown figure

where in the elements 1, 2, 3 are tree branches.

Figure 3(b)A rectangular core has a cross-sectional area of 20 cm

2

. It is made from two

materials: cast steel 50 cm and steel 40 cm long. It is desired to create a flux of 3

mWb in the core. The relative permeability for cast steel is 500 and that of sheet

steel is 2000. The coil has 300 turns. Find mmf and current in the coil.

R16

2 of 4

j2?

10?

V

2?

j5?

?

?

j2?

5

0

30 ? (V)and find the voltage (7M)

make the graph and find one tree. How many mesh currents are (9M)

as shown figure (5M)

. It is made from two

long. It is desired to create a flux of 3

mWb in the core. The relative permeability for cast steel is 500 and that of sheet (7M)

SET – 2

10?

Code No: R161208

effective inductance.

5. a) The following circuit show

across 200V, 50Hz ac supply calculate(i) The current drawn from supply(ii) Apparent power(iii) Real power, and(iv) Reactive power

b) Determine the rms value of a saw tooth

6. a) A series RLC circuit consists of resistance R = 20

capacitance, C= 0.04?F

frequency equal to the frequency of resonance is applied to this

the values of V

C

and V

L

these voltages V

C

and V

L

Figure 4(b)The following circuit shown in figure 5(a) is a parallel RL arrangement connected

Hz ac supply calculate.

The current drawn from supply

Apparent power

Real power, and

Reactive power

Figure 5(a)Determine the rms value of a saw tooth wave as shown in figure 5(b).

Figure 5(b)A series RLC circuit consists of resistance R = 20 ?, inductance, L=

?F. Calculate the frequency at resonance. If a 10 Volts of

frequency equal to the frequency of resonance is applied to this circuit, calculate

across C and L respectively. Find the frequencies at which

V

L

are maximum? .

R16

3 of 4

, and determine the (7M)

rrangement connected (7M) (7M)

0.01H and

10 Volts of

circuit, calculate

the frequencies at which (7M)

SET – 2

Code No: R161208

the power factor is 0.866 lag using locus diagram

7. a) Find the current flowing in the resistor R

resistance of 0.5 ? is inserted in series with R

theorem, the current that will flow through R

shown in figure 7(b).

the power factor is 0.866 lag using locus diagram.

Figure 6(b)Find the current flowing in the resistor R

4

of the network shown in figure 7(a)

is inserted in series with R

4

, find, using the compensation

theorem, the current that will flow through R

4?

Figure 7(b).

4 of 4

R

1

=4? R

3

=8?

R

2

=16? R

4

=8?

12V

R16

evaluate the value of reactance when (7M)

ure 7(a). If a

find, using the compensation (7M)

Calculate the voltage V across the resistor R by using the superposition theorem as (7M)

SET – 2

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS (Electrical and Electronics Engineering

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question in

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) Distinguish between independent and dependent sources.

b) Draw the dual of the network shown

c) Explain the dot convention used in magnetically coupled circuits.

d) Find the response ?I? of an RL series circuit if R = 2

voltage, v(t) = 10 sin 3t.

e) Bring out the differences between series and parallel resonance

f) Obtain the Norton?s equivalent circuit with respect to the terminals AB for the

network shown in figure

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

Note: 1. Question Paper consists of two parts (Part-A and Part-

Answering the question in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

Distinguish between independent and dependent sources.

Draw the dual of the network shown in figure 1(b).

Figure 1(b)Explain the dot convention used in magnetically coupled circuits.

of an RL series circuit if R = 2?, L = 1H and the input

.

differences between series and parallel resonance.

s equivalent circuit with respect to the terminals AB for the

ure 1(f).

Figure 1(f)R16

1 of 4

I B. Tech II Semester Regular/Supplementary Examinations, April/May – 2018

Max. Marks: 70

-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (3M) (3M) (2M)

, L = 1H and the input (2M) (2M)

s equivalent circuit with respect to the terminals AB for the (2M)

SET – 3

Code No: R161208

2. a) Determine the current through 10

by using star-delta conversion

currents I

1

, I

2

and I

3

.

3. a) For the graph shown in fig

tie-set matrix.

4?

8?

12?

20A

PART ?B

Determine the current through 10-? resistance in the network shown in fig

conversion.

Figure 2(b)r the graph shown in figure 3(a) select a tree, identify the tie-sets and write the

Figure 3(a)

R16

2 of 4

? 24?

13?

30?

?

12?

10?

17?

30?

+ –

180V

3?

I

1

I

2

I

3

2?

20V

the mesh equation for the circuit shown in figure 2(b) and determine the (7M)

sets and write the (7M)

SET – 3

?

4?

Code No: R161208

b) Draw the graph of the network shown in fig

matrix.

4. a) A rectangular core has a cross

materials: cast steel 50 cm and steel 40 cm long. It is desired to create a flux of 3

m wb in the core. The relative

steel is 2000. The coil has 300 turns. Find mmf and current in the coil.

b) Find the effective value of the inductance for the following connection

figure 4(b).

5. a) Calculate the average and rms value for a half

as shown in figure 5(a).

Figure 3(b)A rectangular core has a cross-sectional area of 20 cm

2

. It is made from two

materials: cast steel 50 cm and steel 40 cm long. It is desired to create a flux of 3

m wb in the core. The relative permeability for cast steel is 500 and that of sheet

e coil has 300 turns. Find mmf and current in the coil.

Find the effective value of the inductance for the following connection

Figure 4(b)Calculate the average and rms value for a half-wave rectified sinusoidal quantity

.

R16

and write the incidence (7M)

. It is made from two

materials: cast steel 50 cm and steel 40 cm long. It is desired to create a flux of 3

permeability for cast steel is 500 and that of sheet (7M)

Find the effective value of the inductance for the following connection shown in (7M)

wave rectified sinusoidal quantity (7M)

SET – 3

Code No: R161208

b) Determine the total current supplied by the m

5(b).

6. a) A series RLC circuit is connected to a constant voltage variable frequency source

of 200 V (rms). The values of R,

be the voltage across C at

b) For the following circuit

using node voltage method. The source current is given as I

= 100 rad/s.

a) Find the value of R in the circuit shown in

power transfer takes place. What is the amount of this power?

b) Find Thevenin?s equivalent about AB fo

4V 2

+

–

10V

Determine the total current supplied by the mains for the network shown in figure

Figure 5(b)A series RLC circuit is connected to a constant voltage variable frequency source

of 200 V (rms). The values of R, L and C are 5 ?. 0.1 H and 100 ?F. What would

be the voltage across C at resonance?

For the following circuit shown in figure 6(b), find the node voltages V

using node voltage method. The source current is given as I

s(t) = 10 cos

power transfer takes place. What is the amount of this power?

Figure 7(a).

Find Thevenin?s equivalent about AB for the circuit shown in figure 7(b)

Figure 7(b).

4 of 4

5?

R

1? 2?

2?

V

S

— +

4?

A

B

4?

4 V

S

R16

shown in figure (7M)

A series RLC circuit is connected to a constant voltage variable frequency source

?F. What would (7M)

voltages V

A

and V

B(t) = 10 cos ?t(A), ? (7M)

such that maximum (7M)

7(b). (7M)

6V

+

–

SET – 3

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations,

ELECTRICAL CIRCUIT ANALYSIS (Electrical and Electronics Engineering

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question in

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) Explain the volt ampere relationships for R,L and C parameters

b) Determine the basic cut set matrix for the oriented graph given

in the elements 1,2,3 are tree branches

c) Explain the dot connection used in magnetically coupled circuits (mutual

inductances) with the help of

d) Explain the concept of phase angle and phase difference.

e) Two coils of impedance 25.23

across a 230V, 50Hz supply. Find the total impedance

f) State Thevenin?s theorem

2. a) Use nodal analysis to find the voltages V

figure 2(a), in which I

1

= 0.4A

+

V

A

l

1

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

Note: 1. Question Paper consists of two parts (Part-A and Part-

Answering the question in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

the volt ampere relationships for R,L and C parameters.

Determine the basic cut set matrix for the oriented graph given figure 1(b)in the elements 1,2,3 are tree branches.

Figure 1(b)Explain the dot connection used in magnetically coupled circuits (mutual

inductances) with the help of suitable examples.

Explain the concept of phase angle and phase difference.

Two coils of impedance 25.23 ? 37

0

and 18.65 ? 68

0

ohms are connected in series

Hz supply. Find the total impedance.

Thevenin?s theorem.

PART ?B

Use nodal analysis to find the voltages V

A

, V

B

, and V

C

for the circuit shown in

= 0.4A.

Figure 2(a)R16

1 of 4

+

+

20 ?

100 ?

40 ?

40 ?

l

y

80 l

y

V

X

V

B

0.03 V

X

C

April/May – 2018

Max. Marks: 70

-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (2M)

figure 1(b) where (3M)

Explain the dot connection used in magnetically coupled circuits (mutual (2M) (3M)

nnected in series (2M) (2M)

circuit shown in (7 M)

SET – 4

b)Code No: R161208

Determine the current through 10-? resistance in the network shown in figure 2(b)by using star-delta conversion.

Figure 2(b) (7M)

3. a) For the network shown in figure 3(a) draw the graph and show some possible

trees.

Figure 3(a) (7M)

b) Obtain the fundamental cut set matrix by choosing a suitable T (1,6,7) of the given

graph shown in figure 3(b).

Figure 3(b) (7M)

4. a) A coil of 500 turns is wound uniformly over a wooden ring having a mean

circumference of 50 cm and a cross sectional area of 500 mm

2

. If the current

through the coil is 3 A, calculate (i) The magnetic field strength (ii) The flux density and (iii) The total flux

(7M)

2 of 4

4? 24?

13?

30? 8?

12?

12?

10?

17?

30?

+ –

180V

SET – 4

R16

R

2

R

1

R

3

C

1

L

1

V

I

Code No: R161208

b) Determine the coupling coefficient and the energy stored in

t=1.5 s as shown in figure 4(b).

5. a) Find the voltage V

x

if, V

shown in figure 5(a).

b) Calculate the average power absorbed

average power supplied by the voltage source for the circuit shown in fig

6.

a) In a series resonant network R = 6 ohm. The resonant frequency 0.5 MHz and the

band width is 105 rad/sec. Compute

Determine the coupling coefficient and the energy stored in the coupled circuits at

as shown in figure 4(b).

Figure 4(b)if, V

1

(t) = 20cos 1000t volts and V

2

(t) = 20sin 1000t volts

Figure 5(a)Calculate the average power absorbed by the resistor and inductor. Find the

average power supplied by the voltage source for the circuit shown in fig

Figure 5(b)In a series resonant network R = 6 ohm. The resonant frequency 0.5 MHz and the

band width is 105 rad/sec. Compute L and C of the network.

3 of 4

R16

the coupled circuits at (7M) (t) = 20sin 1000t volts as (7M)

by the resistor and inductor. Find the

average power supplied by the voltage source for the circuit shown in figure 5(b). (7M)

In a series resonant network R = 6 ohm. The resonant frequency 0.5 MHz and the (7M)

SET – 4

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS (Electrical and Electronics Engineering

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question in

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) State and explain Kirchoff?s Laws

b) Define the following terms(i) Graph of a network (ii) Oriented graph

c) Find the effective value of the inductance for the

in figure 1(c).

d) Calculate the current drawn by impedance. Z = (30

?0

0

is applied across it.

e) A series RLC circuit has the following parameter values R = 10

C = 10 ?F. Find the Q factor of the circuit at resonance.

f) Is super position valid for power? Substantiate your answer

2. a) In the network shown in

zero current through the (2+j3) b)Determine the voltage V using source transformatio

circuit shown in figure 2(b)

30

3 ?

3 ?

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

1. Question Paper consists of two parts (Part-A and Part

Answering the question in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

State and explain Kirchoff?s Laws.

Define the following terms with example

Find the effective value of the inductance for the following connections

Figure 1(c)Calculate the current drawn by impedance. Z = (30- j70) ? when voltage, V = 120

F. Find the Q factor of the circuit at resonance.

Is super position valid for power? Substantiate your answer.

PART ?B

In the network shown in figure 2(a), determine the voltage V

b

which results in a

zero current through the (2+j3) ? impedance branch.

Figure 2(a)Determine the voltage V using source transformation and simplification

2(b).

1 of 3

2?

j3 ?

4?

j5 ? 6?

V

b

6?

6A

4?

V

__

+

8V

I B. Tech II Semester Regular/Supplementary Examinations, April/May – 2018

Max. Marks: 70

Part-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (3M) (2M)

following connections as shown (3M)

when voltage, V = 120 (2M)

= 0.01 H and (2M) (2M)

which results in a (9M)

n and simplification for the (5M)

SET – 1

V

__

+

Code No: R161208

Using the tie-set schedule obtain the loop equations

b) For the network shown in

m

2

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

flux of f = 4x 10

-4

wb. (b) Determine the values of

these conditions. Assume H for cast steel = 170 At/m.

b) Draw the dotted equivalent circuit for the net work shown in below fig

find the equivalent inductive reactance.

5. a) Two coils of impedance 25.23

across a 230V, 50Hz supply. Find the

active power.

b) Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero.

1

V

shown in figure 3(a), draw the graph and write a tie-

set schedule obtain the loop equations.

Figure 3(a)For the network shown in figure 3(b), draw the graph and show some possible trees

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

wb. (b) Determine the values of ? and ?

r

for the material under

these conditions. Assume H for cast steel = 170 At/m.

equivalent circuit for the net work shown in below fig

find the equivalent inductive reactance.

Figure 4(b)Two coils of impedance 25.23 ? 37

0

and 18.65 ? 68

0

ohms are connected in series

Hz supply. Find the total impedance, current, power factor, and

Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero.

2 of 3

R16

R

2

1

C

1

L

1

I

-set schedule. (10M)

draw the graph and show some possible trees. (4M)

section of the core is 2 x 10

-3

and the mean length is 0.16m. (a) Find value of I required to develop a magnetic

for the material under (8M)

equivalent circuit for the net work shown in below figure 4(b). and (6M)

nnected in series

total impedance, current, power factor, and (7M)

Determine the rms value of a triangular wave in which the average rises uniformly

from 0 to V volts and completes the cycle by falling instantaneously to zero. (7M)

SET – 1

R

3

Code No: R161208

6. a) For the circuit shown in figure 6(a). (i) Determine the KVL equations. (ii) Find the two loop currents I

1

, and I

2(iii) Find the power supplied by the source and the power dissipated in each resistor.

b) A coil of 20 ohm resistance and an inductance of 0.2 H are connected in parallel

with a capacitor of 100 ?F. Determine the resonant frequency and the input

impedance at resonance. (7M)

7. a) State and explain compensation theorem. (7M)

b) Find the value of R in the circuit shown in figure 7(b) such that maximum power

transfer takes place. What is the amount of this power?

Figure 7(b) (7M)

SET – 1

R16

+

–

3?

-j5?

-j2?

1?

j2?

2?

10

0

0 ? V

1? 5?

R

1? 4V

6V 2?

+

–

+

–

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS (Electrical and

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) Explain source transformation technique

b) Define the following terms(i) Graph of the Network and Sub(ii) Rank of graph.

c) Find the effective value of the inductance for the following connections

in figure 1(c).

d) A current I = 10?30

0

flows through an impedance, Z = 20

average power delivered to the impedance

e) A two element series circuit has a current of 4

when the voltage of 200 sin (2000t+50

Determine the values of elements.

f) State Maximum power transfer theorem

2. a) Determine the node voltages V1

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

Note: 1. Question Paper consists of two parts (Part-A and Part-

Answering the questions in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

Explain source transformation technique.

Define the following terms.

Graph of the Network and Sub graph.

effective value of the inductance for the following connections

Figure 1(c)flows through an impedance, Z = 20? – 22

0

average power delivered to the impedance.

ries circuit has a current of 4 cos (200t + 13.2

0

) amp flowing

when the voltage of 200 sin (2000t+50

0

) volts is applied across its terminals.

Determine the values of elements.

State Maximum power transfer theorem.

PART -B

voltages V1, V

2

, and V

3

for the circuit shown in figure

figure 2(a)R16

1 of 4

I B. Tech II Semester Regular/Supplementary Examinations, April/May – 2018

Max. Marks: 70

-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (2M) (3M)

effective value of the inductance for the following connections as shown (2M)

? find the (2M)

) amp flowing

is applied across its terminals. (3M) (2M)

ure 2(a). (7M)

SET – 2

Code No: R161208

b) Write the loop equations of the circuit

V

x

.

required for solving the

b) Determine the basic cut set

3(b) where in the elements 1,

4. a) A rectangular core has a cross

materials: cast steel 50 cm and steel 40 cm

mWb in the core. The relative permeability for cast steel is 500 and that of sheet

steel is 2000. The coil has 300 turns. Find mmf and current in the coil.

2?

2?

10

0

0 ? (V)Write the loop equations of the circuit as shown in figure 2(b) and find the

required for solving the network? Find the number of possible trees.

Figure 3(a)Determine the basic cut set matrix for the oriented graph given as shown figure

where in the elements 1, 2, 3 are tree branches.

Figure 3(b)A rectangular core has a cross-sectional area of 20 cm

2

. It is made from two

materials: cast steel 50 cm and steel 40 cm long. It is desired to create a flux of 3

mWb in the core. The relative permeability for cast steel is 500 and that of sheet

steel is 2000. The coil has 300 turns. Find mmf and current in the coil.

R16

2 of 4

j2?

10?

V

2?

j5?

?

?

j2?

5

0

30 ? (V)and find the voltage (7M)

make the graph and find one tree. How many mesh currents are (9M)

as shown figure (5M)

. It is made from two

long. It is desired to create a flux of 3

mWb in the core. The relative permeability for cast steel is 500 and that of sheet (7M)

SET – 2

10?

Code No: R161208

effective inductance.

5. a) The following circuit show

across 200V, 50Hz ac supply calculate(i) The current drawn from supply(ii) Apparent power(iii) Real power, and(iv) Reactive power

b) Determine the rms value of a saw tooth

6. a) A series RLC circuit consists of resistance R = 20

capacitance, C= 0.04?F

frequency equal to the frequency of resonance is applied to this

the values of V

C

and V

L

these voltages V

C

and V

L

Figure 4(b)The following circuit shown in figure 5(a) is a parallel RL arrangement connected

Hz ac supply calculate.

The current drawn from supply

Apparent power

Real power, and

Reactive power

Figure 5(a)Determine the rms value of a saw tooth wave as shown in figure 5(b).

Figure 5(b)A series RLC circuit consists of resistance R = 20 ?, inductance, L=

?F. Calculate the frequency at resonance. If a 10 Volts of

frequency equal to the frequency of resonance is applied to this circuit, calculate

across C and L respectively. Find the frequencies at which

V

L

are maximum? .

R16

3 of 4

, and determine the (7M)

rrangement connected (7M) (7M)

0.01H and

10 Volts of

circuit, calculate

the frequencies at which (7M)

SET – 2

Code No: R161208

the power factor is 0.866 lag using locus diagram

7. a) Find the current flowing in the resistor R

resistance of 0.5 ? is inserted in series with R

theorem, the current that will flow through R

shown in figure 7(b).

the power factor is 0.866 lag using locus diagram.

Figure 6(b)Find the current flowing in the resistor R

4

of the network shown in figure 7(a)

is inserted in series with R

4

, find, using the compensation

theorem, the current that will flow through R

4?

Figure 7(b).

4 of 4

R

1

=4? R

3

=8?

R

2

=16? R

4

=8?

12V

R16

evaluate the value of reactance when (7M)

ure 7(a). If a

find, using the compensation (7M)

Calculate the voltage V across the resistor R by using the superposition theorem as (7M)

SET – 2

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS (Electrical and Electronics Engineering

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question in

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) Distinguish between independent and dependent sources.

b) Draw the dual of the network shown

c) Explain the dot convention used in magnetically coupled circuits.

d) Find the response ?I? of an RL series circuit if R = 2

voltage, v(t) = 10 sin 3t.

e) Bring out the differences between series and parallel resonance

f) Obtain the Norton?s equivalent circuit with respect to the terminals AB for the

network shown in figure

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

Note: 1. Question Paper consists of two parts (Part-A and Part-

Answering the question in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

Distinguish between independent and dependent sources.

Draw the dual of the network shown in figure 1(b).

Figure 1(b)Explain the dot convention used in magnetically coupled circuits.

of an RL series circuit if R = 2?, L = 1H and the input

.

differences between series and parallel resonance.

s equivalent circuit with respect to the terminals AB for the

ure 1(f).

Figure 1(f)R16

1 of 4

I B. Tech II Semester Regular/Supplementary Examinations, April/May – 2018

Max. Marks: 70

-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (3M) (3M) (2M)

, L = 1H and the input (2M) (2M)

s equivalent circuit with respect to the terminals AB for the (2M)

SET – 3

Code No: R161208

2. a) Determine the current through 10

by using star-delta conversion

currents I

1

, I

2

and I

3

.

3. a) For the graph shown in fig

tie-set matrix.

4?

8?

12?

20A

PART ?B

Determine the current through 10-? resistance in the network shown in fig

conversion.

Figure 2(b)r the graph shown in figure 3(a) select a tree, identify the tie-sets and write the

Figure 3(a)

R16

2 of 4

? 24?

13?

30?

?

12?

10?

17?

30?

+ –

180V

3?

I

1

I

2

I

3

2?

20V

the mesh equation for the circuit shown in figure 2(b) and determine the (7M)

sets and write the (7M)

SET – 3

?

4?

Code No: R161208

b) Draw the graph of the network shown in fig

matrix.

4. a) A rectangular core has a cross

materials: cast steel 50 cm and steel 40 cm long. It is desired to create a flux of 3

m wb in the core. The relative

steel is 2000. The coil has 300 turns. Find mmf and current in the coil.

b) Find the effective value of the inductance for the following connection

figure 4(b).

5. a) Calculate the average and rms value for a half

as shown in figure 5(a).

Figure 3(b)A rectangular core has a cross-sectional area of 20 cm

2

. It is made from two

materials: cast steel 50 cm and steel 40 cm long. It is desired to create a flux of 3

m wb in the core. The relative permeability for cast steel is 500 and that of sheet

e coil has 300 turns. Find mmf and current in the coil.

Find the effective value of the inductance for the following connection

Figure 4(b)Calculate the average and rms value for a half-wave rectified sinusoidal quantity

.

R16

and write the incidence (7M)

. It is made from two

materials: cast steel 50 cm and steel 40 cm long. It is desired to create a flux of 3

permeability for cast steel is 500 and that of sheet (7M)

Find the effective value of the inductance for the following connection shown in (7M)

wave rectified sinusoidal quantity (7M)

SET – 3

Code No: R161208

b) Determine the total current supplied by the m

5(b).

6. a) A series RLC circuit is connected to a constant voltage variable frequency source

of 200 V (rms). The values of R,

be the voltage across C at

b) For the following circuit

using node voltage method. The source current is given as I

= 100 rad/s.

a) Find the value of R in the circuit shown in

power transfer takes place. What is the amount of this power?

b) Find Thevenin?s equivalent about AB fo

4V 2

+

–

10V

Determine the total current supplied by the mains for the network shown in figure

Figure 5(b)A series RLC circuit is connected to a constant voltage variable frequency source

of 200 V (rms). The values of R, L and C are 5 ?. 0.1 H and 100 ?F. What would

be the voltage across C at resonance?

For the following circuit shown in figure 6(b), find the node voltages V

using node voltage method. The source current is given as I

s(t) = 10 cos

power transfer takes place. What is the amount of this power?

Figure 7(a).

Find Thevenin?s equivalent about AB for the circuit shown in figure 7(b)

Figure 7(b).

4 of 4

5?

R

1? 2?

2?

V

S

— +

4?

A

B

4?

4 V

S

R16

shown in figure (7M)

A series RLC circuit is connected to a constant voltage variable frequency source

?F. What would (7M)

voltages V

A

and V

B(t) = 10 cos ?t(A), ? (7M)

7(b). (7M)

6V

+

–

SET – 3

Code No: R161208

I B. Tech II Semester Regular/Supplementary Examinations,

ELECTRICAL CIRCUIT ANALYSIS (Electrical and Electronics Engineering

Time: 3 hours

Note: 1. Question Paper consists of two parts (

2. Answering the question in

3. Answer any

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. a) Explain the volt ampere relationships for R,L and C parameters

b) Determine the basic cut set matrix for the oriented graph given

in the elements 1,2,3 are tree branches

inductances) with the help of

d) Explain the concept of phase angle and phase difference.

across a 230V, 50Hz supply. Find the total impedance

f) State Thevenin?s theorem

2. a) Use nodal analysis to find the voltages V

figure 2(a), in which I

1

= 0.4A

+

V

A

l

1

I B. Tech II Semester Regular/Supplementary Examinations, April/May

ELECTRICAL CIRCUIT ANALYSIS ? I

Electrical and Electronics Engineering)

Note: 1. Question Paper consists of two parts (Part-A and Part-

Answering the question in Part-A is Compulsory

3. Answer any FOUR Questions from Part-B

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PART ?A

the volt ampere relationships for R,L and C parameters.

Determine the basic cut set matrix for the oriented graph given figure 1(b)in the elements 1,2,3 are tree branches.

Figure 1(b)Explain the dot connection used in magnetically coupled circuits (mutual

inductances) with the help of suitable examples.

Explain the concept of phase angle and phase difference.

Two coils of impedance 25.23 ? 37

0

and 18.65 ? 68

0

ohms are connected in series

Hz supply. Find the total impedance.

Thevenin?s theorem.

PART ?B

Use nodal analysis to find the voltages V

A

, V

B

, and V

C

for the circuit shown in

= 0.4A.

Figure 2(a)R16

1 of 4

+

+

20 ?

100 ?

40 ?

40 ?

l

y

80 l

y

V

X

V

B

0.03 V

X

C

April/May – 2018

Max. Marks: 70

-B)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (2M)

figure 1(b) where (3M)

Explain the dot connection used in magnetically coupled circuits (mutual (2M) (3M)

nnected in series (2M) (2M)

circuit shown in (7 M)

SET – 4

b)Code No: R161208

Determine the current through 10-? resistance in the network shown in figure 2(b)by using star-delta conversion.

Figure 2(b) (7M)

3. a) For the network shown in figure 3(a) draw the graph and show some possible

trees.

Figure 3(a) (7M)

b) Obtain the fundamental cut set matrix by choosing a suitable T (1,6,7) of the given

graph shown in figure 3(b).

Figure 3(b) (7M)

4. a) A coil of 500 turns is wound uniformly over a wooden ring having a mean

circumference of 50 cm and a cross sectional area of 500 mm

2

. If the current

through the coil is 3 A, calculate (i) The magnetic field strength (ii) The flux density and (iii) The total flux

(7M)

2 of 4

4? 24?

13?

30? 8?

12?

12?

10?

17?

30?

+ –

180V

SET – 4

R16

R

2

R

1

R

3

C

1

L

1

V

I

Code No: R161208

b) Determine the coupling coefficient and the energy stored in

t=1.5 s as shown in figure 4(b).

5. a) Find the voltage V

x

if, V

shown in figure 5(a).

b) Calculate the average power absorbed

average power supplied by the voltage source for the circuit shown in fig

6.

a) In a series resonant network R = 6 ohm. The resonant frequency 0.5 MHz and the

band width is 105 rad/sec. Compute

Determine the coupling coefficient and the energy stored in the coupled circuits at

as shown in figure 4(b).

Figure 4(b)if, V

1

(t) = 20cos 1000t volts and V

2

(t) = 20sin 1000t volts

Figure 5(a)Calculate the average power absorbed by the resistor and inductor. Find the

average power supplied by the voltage source for the circuit shown in fig

Figure 5(b)In a series resonant network R = 6 ohm. The resonant frequency 0.5 MHz and the

band width is 105 rad/sec. Compute L and C of the network.

3 of 4

R16

the coupled circuits at (7M) (t) = 20sin 1000t volts as (7M)

by the resistor and inductor. Find the

average power supplied by the voltage source for the circuit shown in figure 5(b). (7M)

In a series resonant network R = 6 ohm. The resonant frequency 0.5 MHz and the (7M)

SET – 4

Code No: R161208

b) A coil of 10 ohms resistance and 0.1 H

150 ? F capacitor and the combination is energized with

shown in figure 6(b). Calculate(i) The current drawn from the mainstream(ii) The voltage across the inductor coil and(iii) The average power consumed and the power factor of the circuit

7.

a) In this circuit shown in

and resulting voltage V and show that the reciprocity theorem is verified

b) Find the current I in the circuit shown in fig

theorem.

1?

1A

5

0

90 ? (A)A coil of 10 ohms resistance and 0.1 H inductance is connected in series with a

F capacitor and the combination is energized with 240 V, 50 Hz supply

. Calculate

The current drawn from the mainstream

The voltage across the inductor coil and

average power consumed and the power factor of the circuit

Figure 6(b)in figure 7(a), find voltage V, interchange the current source

and resulting voltage V and show that the reciprocity theorem is verified

Figure 7(a)in the circuit shown in figure 7(b) using the superposition

Figure 7(b)4 of 4

R16

I

1?

2?

3?

2?

5?

-j2?

j5?

I

1

I

2

inductance is connected in series with a

240 V, 50 Hz supply as (7M)

find voltage V, interchange the current source

and resulting voltage V and show that the reciprocity theorem is verified. (7M)

using the superposition (7M)

SET – 4

1V

V

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