Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Summer 3rd Sem Old 130901 Circuits And Networks Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? III(OLD) EXAMINATION ? SUMMER 2019
Subject Code: 130901 Date: 04/06/2019
Subject Name: Circuits And Networks
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1 (a) Define following terms: (a) Linear and Nonlinear Networks (b) Lumped and
Distributed Networks (c) Principle of Duality
07
(b) Construct the exact dual of the network of figure.1.
07
Q.2 (a) State Thevenin?s theorem. Calculate current passing through 4? resistance in
the circuit shown in figure.2, using Thevenin?s theorem.
07
(b) For the circuit shown in figure.3 find the loop currents using mesh analysis.
07
OR
(b) Find the current passing through 3? resistor for the circuit shown in fig.4 using
nodal analysis.
07
Q.3 (a) State and explain Millman?s theorem.
07
(b) Derive the expression for rise of current and decay of current in R-L series
circuit excited by d.c. voltage source.
07
OR
Q.3 (a) State and explain Superposition theorem.
07
(b) Find current in 20 ? resistance in the circuit shown in figure. 5 using
superposition theorem.
07
Q.4 (a) State and explain the Maximum Power Transfer Theorem. Drive the condition
for maximum power transfer to the load for DC and AC circuit.
07
(b) Find the current in 6 ? using Norton?s Theorem for the circuit shown in fig. 6. 07
OR
Q.4 (a) Explain and derive the step response to R-L series circuit using Laplace
Transformation method.
07
(b) Write the initial conditions for the inductor and capacitor at ?? = 0+ and ?? = ?.
07
Q.5 (a) Give relationship between y parameters and h parameters.
07
(b) Obtain z parameters for the network shown in figure. 7.
07
OR
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1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? III(OLD) EXAMINATION ? SUMMER 2019
Subject Code: 130901 Date: 04/06/2019
Subject Name: Circuits And Networks
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1 (a) Define following terms: (a) Linear and Nonlinear Networks (b) Lumped and
Distributed Networks (c) Principle of Duality
07
(b) Construct the exact dual of the network of figure.1.
07
Q.2 (a) State Thevenin?s theorem. Calculate current passing through 4? resistance in
the circuit shown in figure.2, using Thevenin?s theorem.
07
(b) For the circuit shown in figure.3 find the loop currents using mesh analysis.
07
OR
(b) Find the current passing through 3? resistor for the circuit shown in fig.4 using
nodal analysis.
07
Q.3 (a) State and explain Millman?s theorem.
07
(b) Derive the expression for rise of current and decay of current in R-L series
circuit excited by d.c. voltage source.
07
OR
Q.3 (a) State and explain Superposition theorem.
07
(b) Find current in 20 ? resistance in the circuit shown in figure. 5 using
superposition theorem.
07
Q.4 (a) State and explain the Maximum Power Transfer Theorem. Drive the condition
for maximum power transfer to the load for DC and AC circuit.
07
(b) Find the current in 6 ? using Norton?s Theorem for the circuit shown in fig. 6. 07
OR
Q.4 (a) Explain and derive the step response to R-L series circuit using Laplace
Transformation method.
07
(b) Write the initial conditions for the inductor and capacitor at ?? = 0+ and ?? = ?.
07
Q.5 (a) Give relationship between y parameters and h parameters.
07
(b) Obtain z parameters for the network shown in figure. 7.
07
OR
2
Q.5 (a) Explain the following terms
1. Graph
2. Tree
3. Co-tree
07
(b) Derive relationship between incidence matrix (A), fundamental cut-set matrix
(Qf ) and fundamental tie-set matrix (Bf).
07
*************
Fig.2
Fig.1
Fig.3
Fig.4
Fig.5
Fig.6
Fig.7
V1
12 V
R1
1k?
C1
1?F
L1
560?H
C2
1?F
R2
1k?
V1
5 V
V2
1 V
V3
10 V
R1
2?
R2
3?
R3
1?
R4
1?
R5
4?
V1
12 V
I1
1 A
R1
1k?
R2
1k?
R3
1k?
R1
4?
R2
16?
R3
24?
V1
20 V
V2
30 V
R1
1?
+ V -
R2
6?
I1
3 A
2V
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This post was last modified on 20 February 2020