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

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