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Network Theory Multiple Choice Questions | MCQs | Quiz

Network Theory Interview Questions and Answers
Pratice Network Theory questions and answers for interviews, campus placements, online tests, aptitude tests, quizzes and competitive exams.

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•   Circuit Elements
•   Voltage & Current Sources
•   Ohm's Law
•   Kirchhoffs Current Law
•   Kirchhoffs Voltage Law
•   Tree & Co-Tree
•   Tie Set Matrix
•   Tree Branch Voltages
•   Mesh Analysis
•   Supermesh Analysis
•   Nodal Analysis
•   Supernode Analysis
•   Star Delta Transformation
•   Superposition Theorem
•   Thevenins Theorem
•   Nortons Theorem
•   Reciprocity Theorem
•   Compensation Theorem
•   Power Transfer Theorem
•   Tellegens Theorem
•   Millmans Theorem
•   Sine Wave Angular Relation
•   Sine Wave Voltage
•   Resistor Phase Relation
•   Impedence Diagram
•   Series Circuits
•   Parallel Circuits
•   Instantaneous Power
•   Average Power
•   Power Factors
•   Reactive Power
•   Mesh AC Analysis
•   Nodal AC Analysis
•   Superposition AC Theorem
•   Thevenins AC Theorem
•   Nortons AC Theorem
•   Power Transfer Theorem
•   Series Resonance
•   RLC Circuits Bandwidth
•   Parallel Resonance
•   Resonant Frequency
•   Polyphase System
•   Three Phase Sources
•   Star Delta Transformation
•   Star Connected System
•   Delta Connected System
•   Balanced Circuits
•   Unbalanced Circuits
•   Power Measurement
•   R-L Circuit DC Response
•   R-C Circuit DC Response
•   R-L-C Circuit DC Response
•   Sinusoidal R-L Circuits
•   Sinusoidal R-C Circuits
•   Sinusoidal R-L-C Circuits
•   Laplace Transforms
•   Operational Transforms
•   Inverse Transforms
•   S Domain Circuit Elements
•   Transfer Function
•   Impulse Function
•   Complex Frequency
•   Series & Parallel Elements
•   One Port & Two Port
•   Poles & Zeros
•   Driving Point Functions
•   Transfer Functions
•   Open Circuit Parameters
•   Short Circuit Parameters
•   Transmission Parameters
•   Different Parameters
•   Two Port Networks
•   Network Termination
•   Image Parameters
•   Filter Networks
•   Pass & Stop Band
•   Constant K Low Pass Filter
•   M-Derived T-Section
•   Attenuators
•   Inverse Network
•   Series Equalizer
•   Shunt Equalizer
•   Hurwitz Polynomials
•   Reactive One-Ports
•   Foster One Ports Method
•   Cauer One Ports Method
•   Foster R-L Network Method
•   Cauer R-L Network Method
•   Foster R-C Network Method
•   Cauer R-C Network Method

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Network Theory Questions and Answers – DC Response of an R-L-C Circuit

Posted on June 20, 2017 by Manish

This set of Network Theory Multiple Choice Questions & Answers (MCQs) focuses on “DC Response of an R-L-C Circuit”.

1. For an R-L-C circuit, we get [D – (K1 + K2)][D – (K1 – K2)] i = 0. If K2 is positive, then the curve will be?
a) damped
b) over damped
c) under damped
d) critically damped
View Answer

Answer: b
Explanation: For an R-L-C circuit, we get [D – (K1 + K2)][D – (K1 – K2)] i = 0. If K2 is positive, then the curve will be over damped response.

2. If the roots of an equation are real and unequal, then the response will be?
a) critically damped
b) under damped
c) over damped
d) damped
View Answer

Answer: c
Explanation: If the roots of an equation are real and unequal, then the response will be over damped response. Over damped response of a system is defined as the system returns (exponentially decays) to equilibrium without oscillating.

3. If the roots of an equation are complex conjugate, then the response will be?
a) over damped
b) critically damped
c) damped
d) under damped
View Answer

Answer: d
Explanation: If the roots of an equation are complex conjugate, then the response will be under damped response. Damping is an influence within or upon an oscillatory system that has the effect of reducing, restricting or preventing its oscillations.

4. If the roots of an equation are real and equal, then the response will be?
a) over damped
b) damped
c) critically damped
d) under damped
View Answer

Answer: c
Explanation: If the roots of an equation are real and equal, then the response will be critically damped response. For a critically damped system, the system returns to equilibrium as quickly as possible without oscillating.

5. The circuit shown in the figure consists of resistance, capacitance and inductance in series with a 100V source when the switch is closed at t = 0. Find the equation obtained from the circuit in terms of current.
network-theory-questions-answers-dc-response-rlc-q5
View Answer

Answer: a
Explanation: At t = 0, switch S is closed when the 100V source is applied to the circuit and results in the following differential equation.
network-theory-questions-answers-dc-response-rlc-q5a

6. Replacing the differentiation with D1, D2 in the equation obtained from the question 5. Find the values of D1, D2.
a) 200±j979.8
b) -200±j979.8
c) 100±j979.8
d) -100±j979.8
View Answer

Answer: b
Explanation: Let the roots of the characteristic equation are denoted by D1, D2. So on differentiating the equation obtained in the question 5, we get D1 = -200+j979.8, D2 = -200-j979.8.

7. The expression of current from the circuit shown in the question 5.
a) i=e-200t [c1 cos979.8t+c2 979.8t]A
b) i=e200t [c1 cos979.8t-c2 979.8t]A
c) i=e-200t [c1 cos979.8t-c2 979.8t]A
d) i=e200t [c1 cos979.8t+c2 979.8t]A
View Answer

Answer: a
Explanation: The expression of current from the circuit will be i = eK1t[c1cosK1t + c2sinK2t]. So, i=e-200t [c1 cos979.8t+c2 979.8t]A.

8. At time t = 0, the value of current in the circuit shown in the question 5.
a) 1
b) 2
c) 3
d) 0
View Answer

Answer: d
Explanation: At t = 0 that is initially the current flowing through the circuit is zero that is i = 0. So, i = 0.

9. The voltage across the inductor at t = 0 in the circuit shown in the question 5.
a) 50
b) 100
c) 150
d) 200
View Answer

Answer: b
Explanation: At t = 0, that is initially the voltage across the inductor is 100V. => V = 100V. So we can write Ldi/dt = 100.

10. The current equation obtained from the circuit shown in the question 5.
a) i=e-200t (1.04 sin979.8t)A
b) i=e-200t (2.04 sin979.8t)A
c) i=e-200t (3.04 sin979.8t)A
d) i=e-200t (4.04 sin979.8t)A
View Answer

Answer: b
Explanation: On solving the values of c1, c2 are obtained as c1 = 0, c2 = 2.04. So, the current equation is i=e-200t (2.04 sin979.8t)A.

Sanfoundry Global Education & Learning Series – Network Theory.

To practice all areas of Network Theory, here is complete set of 1000+ Multiple Choice Questions and Answers.

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Power Electronics Questions and Answers – Single Phase FW AC-DC-5 »

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