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Code: 15A04201
B.Tech I Year II Semester (R15) Supplementary Examinations December 2016
NETWORK ANALYSIS
(Common to ECE & EIE)
Time: 3 hours Max. Marks: 70
PART - A
(Compulsory Question)
*****
1 Answer the following: (10 X 02 = 20 Marks)
(a) State super position theorem.
(b) How can a voltage source be replaced by a current source?
(c) Write down the equation of current for an RC circuit when it is supplied by a DC source.
(d) What is the time constant of an RC circuit excited by a DC source?
(e) A sinusoidal voltage source in series with a DC source is shown below. Determine the max current
through and average voltage across R
L
.
(f) Determine the source voltage and phase angle when the voltage across the resistor is 20 V and the
capacitor 30 V.
(g) For the circuit shown below, determine the value of capacitive reactance and impedance at
resonance.
(h) Find the mutual impedance of the circuit shown below.
(i) Define hybrid parameters.
(j) What are called transmission parameters? Why are they called so?
Contd. in page 2
Page 1 of 2
R15
-
+
200 V
V
V
2
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Code: 15A04201
B.Tech I Year II Semester (R15) Supplementary Examinations December 2016
NETWORK ANALYSIS
(Common to ECE & EIE)
Time: 3 hours Max. Marks: 70
PART - A
(Compulsory Question)
*****
1 Answer the following: (10 X 02 = 20 Marks)
(a) State super position theorem.
(b) How can a voltage source be replaced by a current source?
(c) Write down the equation of current for an RC circuit when it is supplied by a DC source.
(d) What is the time constant of an RC circuit excited by a DC source?
(e) A sinusoidal voltage source in series with a DC source is shown below. Determine the max current
through and average voltage across R
L
.
(f) Determine the source voltage and phase angle when the voltage across the resistor is 20 V and the
capacitor 30 V.
(g) For the circuit shown below, determine the value of capacitive reactance and impedance at
resonance.
(h) Find the mutual impedance of the circuit shown below.
(i) Define hybrid parameters.
(j) What are called transmission parameters? Why are they called so?
Contd. in page 2
Page 1 of 2
R15
-
+
200 V
V
V
2
Code: 15A04201
PART - B
(Answer all five units, 5 X 10 = 50 Marks)
UNIT - I
2 Find the power loss in the resistors of the network shown below using nodal analysis.
OR
3 Find the value of R to have a maximum power transfer in the circuit shown below. Also obtain the
amount of maximum power.
UNIT - II
4 Analyze the DC response for RL circuits.
OR
5 Analyze the DC response for RC circuits.
UNIT - III
6 For the circuit shown in the figure below, a voltage is applied and the resulting current in the
circuit . Determine the active power, reactive power, power factor and the
apparent power.
OR
7 In the network shown below, determine V
a
and V
b
.
UNIT - IV
8 A series circuit with , and has an applied voltage with a
variable frequency. Find the resonant frequency & the value of frequency at which maximum voltage
occurs across the capacitor & inductor.
OR
9 Determine the quality factor of a coil for the series circuit consisting of and
.
UNIT - V
10 Express the Z parameters of a two port network in terms of Y parameters.
OR
11 Analyze constant K low pass filters.
*****
Page 2 of 2
R15
4 A
2 A
- +
10 V
2 A
6 V
10 V
+
+
-
-
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This post was last modified on 11 September 2020