Enrolment No.
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Subject Code: 3131707
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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER- III (New) EXAMINATION — WINTER 2019
Subject Name: Network Analysis
Time: 02:30 PM TO 05:00 PM
Instructions:
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- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
- (a) State and explain superposition theorem. [03]
(b) Explain the characteristics of an ideal voltage source. [04]--- Content provided by FirstRanker.com ---
(c) What is time constant? Explain time constant in terms of RL and RC circuits. [07] - (a) State and explain reciprocity theorem. [03]
(b) Briefly describe KVL and KCL. [04]
(c) Find the currents I1, I2, I3 and I4 for the network shown in Figure 1. [07]
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(c) Briefly describe the application of Laplace transform for transfer function approach in circuit analysis. [07] - (a) Briefly describe millman’s theorem. [03]
(b) What is duality? Explain with example. [04]
(c) Explain the procedure to obtain sinusoidal steady state response of a circuit. [07]
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(c) State and explain initial value theorem. [03] - (a) State and explain maximum power transfer theorem for AC and DC circuits. [04]
(b) Find the voltage drop across x-y for Figure 2. [07] - (a) Determine Y parameters in terms of Z parameters. [03]
(b) Explain significance of poles and zeros in network functions. [04]--- Content provided by FirstRanker.com ---
(c) In the network shown in Figure 3, the switch k is opened at t=0. Solve for v, dv/dt and d2v/dt2 at t=0+ if I=10 A; R=10 O and L=1 H. [07]
OR
(c) Determine H parameters in terms of Z parameters. [03] - (a) State and explain source transformation method. [04]
(b) In the network shown in Figure 4, the switch k is closed at t=0, a steady state having previously been attained. Find the particular solution for the current. [07] - (a) Define unilateral and bilateral network, Active and passive network. [03]
(b) Derive the condition for the network to be reciprocal for ABCD parameters. [04]
(c) Determine I in a circuit of Figure 5 using superposition theorem. [07]
OR
(c) List the advantages of Laplace transformation over classical method. [03] - (a) What is initial condition? Explain the effect of initial condition on the elements of network. [04]
(b) Explain how Laplace transform is useful in obtaining the transient response of a second order system. [07]
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Date: 3/12/2019
Total Marks: 70
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Figure 2
Figure 3
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Figure 4
Figure 5
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