Time: 3 hours Max. Marks: 70
PART - A
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(Compulsory Question)*****
1 Answer the following: (10 X 02 = 20 Marks)
(a) State super position theorem.
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(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
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L.
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(f) Determine the source voltage and phase angle when the voltage across the resistor is 20 V and the
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capacitor 30 V.--- Content provided by FirstRanker.com ---
(g) For the circuit shown below, determine the value of capacitive reactance and impedance at
resonance.
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(h) Find the mutual impedance of the circuit shown below.--- Content provided by FirstRanker.com ---
(i) Define hybrid parameters.
(j) What are called transmission parameters? Why are they called so?
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Contd. in page 2
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R15
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200 V
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V
V
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2
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FirstRanker.com - FirstRanker's ChoiceCode: 15A04201
B.Tech I Year II Semester (R15) Supplementary Examinations December 2016
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NETWORK ANALYSIS(Common to ECE & EIE)
Time: 3 hours Max. Marks: 70
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PART - A(Compulsory Question)
*****
1 Answer the following: (10 X 02 = 20 Marks)
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(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
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through and average voltage across RL
.
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(f) Determine the source voltage and phase angle when the voltage across the resistor is 20 V and thecapacitor 30 V.
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(g) For the circuit shown below, determine the value of capacitive reactance and impedance at
resonance.
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(h) Find the mutual impedance of the circuit shown below.
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(i) Define hybrid parameters.
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(j) What are called transmission parameters? Why are they called so?Contd. in page 2
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Page 1 of 2
R15
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-
+
200 V
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V
V
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2
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Code: 15A04201
PART - B
(Answer all five units, 5 X 10 = 50 Marks)
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UNIT - I
2 Find the power loss in the resistors of the network shown below using nodal analysis.
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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.
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UNIT - II
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4 Analyze the DC response for RL circuits.OR
5 Analyze the DC response for RC circuits.
UNIT - III
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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.
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OR
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7 In the network shown below, determine Va
and V
b
.
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UNIT - IV
8 A series circuit with , and has an applied voltage with a
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variable frequency. Find the resonant frequency & the value of frequency at which maximum voltageoccurs across the capacitor & inductor.
OR
9 Determine the quality factor of a coil for the series circuit consisting of and
.
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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.
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*****Page 2 of 2
R15
4 A
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2 A--- Content provided by FirstRanker.com ---
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10 V
2 A
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6 V10 V
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+
+
-
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