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Old June 6th, 2014, 11:40 AM
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Will you please share the previous year question paper of Gujarat Technological University (GTU) - Electronics and Communication Engineering (ECE) 3rd Sem Circuits and Network Exam???

Here I am sharing the previous year question paper of Gujarat Technological University (GTU) - Electronics and Communication Engineering (ECE) 3rd Sem Circuits and Network Exam

Q.1 (a) Explain the terms ( i ) Linear (ii) Bilateral ( iii) Passive (iv) Reciprocal
(v) Time invariant (vi) Lumped parameter and (vii) Dual with reference to Network.
(b) Write down voltage and current relationships in resistor, inductor and capacitor.
Obtain these relationships in “s” domain also. State assumptions if any in obtaining
the relationship.
Q.2 (a) (i) Explain about voltage sources and current sources. Include ideal, practical,
independent and dependent sources in your explanation.
(ii) Using Nodal analysis find voltage V1 and V2 for the circuit shown in Figure 1. 03
(b) Explain in brief about source transformation and Find Norton’s equivalent circuit
for the network shown in Figure 2 and obtain current in 103 resistor.
(b) Obtain Thevenin’s equivalent circuit for the network shown Figure 3 and find the
power dissipated in RL= 53 resistor. Find RL for maximum power transfer from the
source and compute maximum power that can be transferred i.e. Pmax.
Q.3 (a) Find the voltage across 1K3 resistor in the circuit shown in Figure 4, using
superposition theorem.
(b) Obtain the response vC(t) and iL(t) for the source free RC and RL circuits
respectively. Assume initial voltage V0 and initial current I0 respectively.
Q.3 (a) For the circuit shown in Figure 5, the switch “S” is at position “1” and the steady
state condition is reached. The switch is moved to a position “2” at t = 0. Find the
current i(t) in both the cases, i.e. with switch at position 1 and switch at position 2.
(b) How do one classify that the given circuit is of first order or second order? Obtain
second order circuit models for series RLC and parallel RLC circuits in time
domain and in “s” domain.
Q.4 (a) Obtain the Laplace Transform for f1(t)=t and f2(t)= te-at 07
(b) State the final value theorem of Laplace Transform and find the final value of the
function f(t) =5u(t) + 10e-t using final value theorem. Under what conditions the
final value theorem cannot be used ? Give one example.
Q.4 (a) What is an impulse function ? For the network function H(s) given below, Find the
impulse response h(t).
H(s) =
s2+ 4s +1
(b) Obtain currents I1(s), I2(s) and V0(s) for circuit shown in Figure 6. 07
Q.5 (a) Find Z- parameters for the network shown in Figure 7. 07
(b) Explain about hybrid parameters for two port network and state where do one make
use of these parameters.
Q.5 (a) ABCD parameters are also known as transmission parameters and they are derived
from the basic two port network parameters. Show that, for reciprocal linear time
invariant two port network, AD-BC =1.
(b) Explain about linear oriented graph, Incidence Matrix and Circuit Matrix. Show
Kirchoff’s Laws in Incidence Matrix formulation and Circuit Matrix formulation.

Gujarat Technological University
Sabarmati, Koba Highway, Near VISAT Three Road, Nr. Vishwakarma Government Engineering College, Chandkheda, Amdavad, Gujarat 382424 ‎
079 2630 0499 ‎


Last edited by Aakashd; October 14th, 2019 at 05:49 PM.
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