Categories: Second Year First Semester (2-1)

JNTU Kakinada B-Tech 1-2 R1621044 NETWORK ANALYSIS R13 Question Paper

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

NETWORK ANALYSIS (Com to ECE, EIE and ECC)

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

Answer ALL the question in Part-A

3. Answer any FOUR Questions from Part-B

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

PART ?A

Explain the terms i) Resistivity and ii) Conductivity and give its units

Define the following terms w.r.t network Graph theory:

i)Connected graph ii) Tree iii) Links

Explain the term Quality factor of a circuit in resonance

Norton?s Theorem

What are the conditions to be fulfilled for reciprocity of a two port network

Distinguish between Homogeneous and Non ?Homogeneous equations

PART -B

principle of Duality with an example

Using node analysis, find I for the circuit diagram shown below:

Prove that in a pure inductive circuit the active power supplied over a complete

averages out to Zero.

inductive coil takes 15A when the supply voltage is 230 V, 50 Hz. If

the frequency is changed to 40 Hz, the current increases to 17.2 A. Calculate

the resistance and the inductance of the coil.

Derive the equation for Equivalent inductance , when two inductors are

coupled in series opposing and mutual inductance exists between them

A coil of resistance 50? and inductance 9H is connected in series with a

capacitor and is supplied at constant voltage and variable frequency source. If

he maximum current is 1A at 75 Hz determine the frequencies when the

1 of 2

R16

2018

Max. Marks: 70

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

for reciprocity of a two port network (2M) (2M) (7M) (7M)

Prove that in a pure inductive circuit the active power supplied over a complete (7M)

inductive coil takes 15A when the supply voltage is 230 V, 50 Hz. If

the frequency is changed to 40 Hz, the current increases to 17.2 A. Calculate (7M)

when two inductors are (6M)

and inductance 9H is connected in series with a

capacitor and is supplied at constant voltage and variable frequency source. If

he maximum current is 1A at 75 Hz determine the frequencies when the (8M)

SET – 1

Code No: R1621044

II B. Tech I Semester Supplementary

Time: 3 hours

Note: 1. Question Paper

2. Answer

3. Answer any

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

1. a)Explain the terms i) Resistivity and ii) Conductivity and give its units

b) Define the following terms w.r.t network Graph theory:

i)Connected graph ii) Tree iii) Links

c)Explain the term Quality factor of

d)State the Norton?s Theorem

e)What are the conditions

f)Distinguish between Homogeneous and Non

2. a)Explain the principle of Duality with an example

b) Using node analysis, find I for the circuit diagram shown below:

3. a) Prove that in a pure inductive circuit the active power supplied over a complete

cycle averages out to Zero.

b) A certain inductive coil takes 15A when the supply voltage is 230 V, 50 Hz. If

the frequency is changed to 40 Hz, the current increases to 17.2 A. Calculate

the resistance and the inductance of the coil.

4. a) Derive the equation for Equivalent inductance ,

coupled in series opposing and mutual inductance exists between them

b) A coil of resistance 50

capacitor and is supplied at constant voltage and variable frequency source. If

the maximum current is 1A at 75 Hz determine the frequencies when the

current is 0.5A.

II B. Tech I Semester Supplementary Examinations, May – 201

NETWORK ANALYSIS (Com to ECE, EIE and ECC)

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

Answer ALL the question in Part-A

3. Answer any FOUR Questions from Part-B

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

PART ?A

Explain the terms i) Resistivity and ii) Conductivity and give its units

Define the following terms w.r.t network Graph theory:

i)Connected graph ii) Tree iii) Links

Explain the term Quality factor of a circuit in resonance

Norton?s Theorem

What are the conditions to be fulfilled for reciprocity of a two port network

Distinguish between Homogeneous and Non ?Homogeneous equations

PART -B

principle of Duality with an example

Using node analysis, find I for the circuit diagram shown below:

Prove that in a pure inductive circuit the active power supplied over a complete

averages out to Zero.

inductive coil takes 15A when the supply voltage is 230 V, 50 Hz. If

the frequency is changed to 40 Hz, the current increases to 17.2 A. Calculate

the resistance and the inductance of the coil.

Derive the equation for Equivalent inductance , when two inductors are

coupled in series opposing and mutual inductance exists between them

A coil of resistance 50? and inductance 9H is connected in series with a

capacitor and is supplied at constant voltage and variable frequency source. If

he maximum current is 1A at 75 Hz determine the frequencies when the

1 of 2

R16

2018

Max. Marks: 70

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

for reciprocity of a two port network (2M) (2M) (7M) (7M)

Prove that in a pure inductive circuit the active power supplied over a complete (7M)

inductive coil takes 15A when the supply voltage is 230 V, 50 Hz. If

the frequency is changed to 40 Hz, the current increases to 17.2 A. Calculate (7M)

when two inductors are (6M)

and inductance 9H is connected in series with a

capacitor and is supplied at constant voltage and variable frequency source. If

he maximum current is 1A at 75 Hz determine the frequencies when the (8M)

SET – 1

Code No: R1621044

5.

Use Thevenin?s theorem to find the current I that will flow through the switch

S in the circuit shown in figure,

as the magnitude of I

6. a) Explain the interrelationships between Z

parameters for a two port network

b) For the network shown, determine Y

7. a)Derive the step response of RL circuit in s

b) The network shown in figure, is initially under steady state condition. The

switch is opened at t=0. Find the voltage across inductance as a function

Use Thevenin?s theorem to find the current I that will flow through the switch

S in the circuit shown in figure, when S is closed. Specify the direction as well

Explain the interrelationships between Z-parameters in terms of ABCD

parameters for a two port network

For the network shown, determine Y

11

and Y

21

with 3 ? load across port 2.

Derive the step response of RL circuit in s-domain

The network shown in figure, is initially under steady state condition. The

switch is opened at t=0. Find the voltage across inductance as a function

2 of 2

R16

Use Thevenin?s theorem to find the current I that will flow through the switch

when S is closed. Specify the direction as well (14M)

parameters in terms of ABCD – (7M)

load across port 2. (7M) (5M)

The network shown in figure, is initially under steady state condition. The

switch is opened at t=0. Find the voltage across inductance as a function of t. (9M)

SET – 1

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