RN SHETTY TRUST®
RNS INSTITUTE OF TECHNOLOGY
Autonomous Institution Affiliated to VTU, Recognized by GOK, Approved by AICTE
(NAAC ‘A+ Grade’ Accredited, NBA Accredited (UG - CSE, ECE, ISE, EIE and EEE)
Channasandra, Dr. Vishnuvardhan Road, Bengaluru - 560 098
Ph:(080)28611880,28611881 URL: www.rnsit.ac.in
DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING
Question Bank
SUBJECT CODE AND TITLE BEC304 Network Analysis
SCHEME 2022 BATCH 2023-27
SEMESTER& SECTION 3C
FACULTY NAME
Dr. S. K. Srivastava
Q.No. Question Marks RBT COs
*
Module 1
1 Using mesh analysis, determine the mesh currents in the circuit shown in
Fig. Q1.
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Fig. Q1
2 Define a) network b) circuit c) mesh d) loop e) node f) junction 5 L2 CO1
3 Find the value of Vo in the circuit shown in Fig Q3 using nodal analysis.
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Fig. Q3
4 Illustrate the application of mesh analysis and node analysis by
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considering suitable examples.
5 Calculate the value of Vx in the network shown in the Fig Q5 using the
mesh analysis, if the current through (2+j3) Ω is zero.
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Fig. Q5
1
6 Using mesh analysis, determine the power delivered by dependent
source in the circuit shown in Fig. Q6.
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Fig. Q6
7 Illustrate the concepts of supermesh and supernode by considering
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suitable examples.
8 Derive expressions for star components in terms of delta components
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and vice-versa.
9 Find the value of Vx in the circuit shown in Fig Q9 using nodal analysis.
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Fig. Q7
10 Refer the circuit shown in Fig. Q5 and calculate the voltage across 6
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ohms, if Vx is given by 25-j25 V.
11 Calculate the value of Vx in the network shown in the Fig. Q11 using
the node analysis, if the current through (2+j5) Ω is zero.
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Fig. Q11
12 Using source shifting and source transformation techniques, determine
the power delivered by the source 10 V in the circuit shown in Fig. Q12.
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Fig. Q12
13 Using source shifting and source transformation techniques, determine
the voltage across 3 ohms resistor. Refer the circuit shown in Fig. Q13. 7 L3 CO1
2
Fig. Q13
14 Find the equivalent resistance between the terminals A-B in the circuit
shown in Fig. Q14.
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Fig. Q14
Module 2
1 Using Superposition Theorem, calculate the value of I and V in the circuit
shown in Fig. Q1.
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Fig. Q1
2 Find the value of I in the circuit shown in Fig. Q2 using Thevenin’s
theorem and then using Norton’s Theorem.
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Fig. Q2
3 In the circuit shown in Fig. Q3, find the value of RL for which there is
MPT and the value of maximum power that gets transferred.
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Fig. Q3
4 Find the Thevenin’s and Norton’s equivalent of the network shown in Fig.
Q4.
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3
Fig. Q4
5 When a linear network is terminated with 2 + j3 Ω, the load current is
8∟-8.13° A. When it is terminated with 3 +j2 Ω, the load current is
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2∟8.13°A. Find the Thevenin’s network and find the value of ZL for
which there is MPT. Also, find the value of Pmax..
6 Find the value of Io in the circuit shown in Fig. Q6, using Millman’s
theorem.
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Fig. Q6
7 State and prove (i) Superposition theorem (ii) Millman’s theorem (iii)
Thevenin’s theorem (iv) Norton’s theorem (v) Maximum power transfer 6x4 L2 CO2
theorem.
Module 3
1 In the network shown in Fig. Q1, find d2v/dt2 at t=0+, Consider initial
capacitor voltage to be 0. Given v1= e-t, for t ≥ 0 and is 0, for t < 0.
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Fig. Q1
2 In the circuit shown in Fig. Q2, find the first derivative of circuit current
and second derivative of voltage across the switch at t=0+.
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Fig. Q2
3 In the circuit shown in Fig. Q3, find i1(0+) and vc(0+). Consider the
circuit to be in steady state before the action of switch.
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Fig. Q3
4 In the circuit shown in Fig.Q4, find inductor and capacitor currents, and
also their derivatives, all at t=0+.
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4
Fig. Q4
5 Describe the RLC elements behavior at initial and final conditions. 4 L2 CO3
6 Why study Initial conditions? 3 L1 CO3
7 A coil of R=1kΩ and L=1H is connected to a DC voltage of 100 V through
a changeover switch. At t=0, the switch connects a capacitor of C=0.01μF
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in series with the coil, excluding the voltage source. Solve for i, di/dt,
d2i/dt2 in the coil at t=0+.
Module 4
1 Determine the current i2(t) in the circuit shown in Fig Q1 using Laplace
transform
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Fig. Q1
2 Find the value of i(t), for t > 0, in the circuit shown in Fig. Q2 using Laplace
transform. Assume zero initial conditions.
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Fig. Q2
3 An RC circuit gets excited by 10 V source at t=0. Find the value of circuit
current at 2 ms. Consider R= 1 kΩ and C = 1µF. Using the final value 6 L4 CO4
theorem, find the final value of the capacitor voltage.
4 Find the value of i1(t), for t > 0, in the circuit shown in Fig.Q4 using
Laplace transform. Assume zero initial conditions.
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Fig. Q4
5 Determine the current i(t) for t > 0 in the circuit shown in Fig Q5 using
Laplace transform method. Assume the circuit is in steady state for t < 0.
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5
Fig. Q5
6 Find the Laplace transform of the waveform shown in Fig Q6.
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Fig. Q6
7 Find the Laplace transform of the waveform shown in Fig Q7.
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Fig. Q7
8 Find the Laplace transforms of unit step, impulse and ramp functions. 6 L2 CO4
Module 5
1 Obtain the h- and Z-parameters of the network shown in Fig. Q1
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Fig. Q1
2 Obtain the Z- and Y-parameters of the network shown in Fig. Q2
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Fig. Q2
3 Following Short circuit currents and voltages are obtained experimentally
for a two port network.
i) With output short circuited: I1 = 5 mA, I2=-0.3 mA and V1=20
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V.
ii) With input short circuited: I1 = -5 mA, I2=10 mA and V2=35
V. find Y-parameters.
4 Find the values of ‘L’ at which the circuit shown in Fig 12 resonates at a
frequency of ω=500 rad/sec.
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Fig. Q4
6
5 In a series resonant circuit, the bandwidth is 100 rad/sec, resonant frequency is
10000 rad/sec and the current at resonant frequency is 10 A. The applied voltage
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is 100 V. Obtain R, L and C values. Also, find the inductor voltage at 11000
rad/sec.
6 Obtain the T-parameters of the network shown in Fig.14.
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Fig. Q6
7 Explain the frequency response of the series RLC circuit. Define
selectivity and Bandwidth. What is meant by 3dB frequencies. Show that
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ω02 = ω1 ω2.
8 A coil of R= 10 Ω and L = 0.5 H is connected in series with a capacitor.
The current is maximum when f= 50Hz. A second capacitor is connected
in parallel with this combination. What capacitance must it have so that
the overall arrangement act like a non-inductive resistor at 100 Hz. 10 L4 CO5
Calculate the total current supplied in each case if the applied voltage is
220V.
9 Find the relationship between the circuit current, capacitor current and
inductor current in the practical parallel resonant circuit. Give the 7 L3 CO5
expression for dynamic resistance.
10 Find the value of capacitor for maximum voltage across it, in case of
capacitor tuning of series resonance. Also find the value of inductor for
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maximum voltage across it , in case of inductor tuning of series
resonance.
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