Explore topic-wise MCQs in Network Theory.

This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Network Theory knowledge and support exam preparation. Choose a topic below to get started.

1.

In the circuit given below, M = 20. The resonant frequency is _______________

A. 4.1 Hz
B. 41 Hz
C. 0.41 Hz
D. 0.041 Hz
Answer» E.
Discussion
2.

The number of non-planar graph of independent loop equations is ______________

A. 8
B. 12
C. 3
D. 5
Answer» D. 5
Discussion
3.

In the circuit given below, the voltage across AB is _______________

A. 250 V
B. 150 V
C. 325 V
D. 100 V
Answer» D. 100 V
Discussion
4.

In the circuit given below, the equivalent capacitance is ______________

A. 5.43 μF
B. 4.23 μF
C. 3.65 μF
D. 5.50 μF
Answer» B. 4.23 μF
Discussion
5.

In the circuit given below, the equivalent capacitance is _________________

A. 1.6 F
B. 3.1 F
C. 0.5 F
D. 4.6 F
Answer» C. 0.5 F
Discussion
6.

In a series RLC circuit having resistance R = 2 Ω, and excited by voltage V = 1 V, the average power is 250 mW. The phase angle between voltage and current is ___________

A. 75°
B. 60°
C. 15°
D. 45°
Answer» E.
Discussion
7.

Three inductors each 30 mH are connected in delta. The value of inductance or each arm of equivalent star is _____________

A. 10 mH
B. 15 mH
C. 30 mH
D. 90 mH
Answer» B. 15 mH
Discussion
8.

A circuit consists of an excitation voltage VS, a resistor network and a resistor R. For different values of R, the values of V and I are as given, R = ∞, V = 5 volt; R = 0, I = 2.5 A; when R = 3 Ω, the value of V is __________

A. 1 V
B. 2 V
C. 3 V
D. 5 V
Answer» D. 5 V
Discussion
9.

In the circuit given below, the value of R is ____________

A. 12 Ω
B. 6 Ω
C. 3 Ω
D. 1.5 Ω
Answer» C. 3 Ω
Discussion
10.

In the circuit given below, a dc circuit fed by a current source. With respect to terminals AB, Thevenin’s voltage and Thevenin’s resistance are ____________

A. VTH = 5 V, RTH = 0.75 Ω
B. VTH = 0.5 V, RTH = 0.75 Ω
C. VTH = 2.5 V, RTH = 1 Ω
D. VTH = 5 V, RTH = 1 Ω
Answer» C. VTH = 2.5 V, RTH = 1 Ω
Discussion
11.

For a series RLC circuit excited by a unit step voltage, Vc is __________

A. 1 – e-t/RC
B. e-t/RC
C. et/RC
D. 1
Answer» B. e-t/RC
Discussion
12.

A waveform is of the form of a trapezium, which increases linearly with the linear slope till θ = \(\frac{π}{3}\), constant till θ = \(\frac{π}{2}\) and again linearly decreases to 0 till θ = π. The average value of this waveform is ______________

A. 2 V
B. 0 V
C. 4 V
D. 3 V
Answer» E.
Discussion
13.

Consider a series RLC circuit having resistance = 1Ω, capacitance = 1 F, considering that the capacitor gets charged to 10 V. At t = 0 the switch is closed so that i = e-2t. When i = 0.37 A, the voltage across capacitor is _____________

A. 1 V
B. 6.7 V
C. 0.37 V
D. 0.185 V
Answer» C. 0.37 V
Discussion
14.

In a parallel RL circuit, 12 A current enters into the resistor R and 16 A current enters into the Inductor L. The total current I the sinusoidal source is ___________

A. 25 A
B. 4 A
C. 20 A
D. Cannot be determined
Answer» D. Cannot be determined
Discussion
15.

In the circuit given below, the KVL for first loop is ___________

A. V (t) = R1i1 + L1 \(\frac{di_1}{dt}\) + M \(\frac{di_2}{dt}\)
B. V (t) = R1i1 – L1 \(\frac{di_1}{dt}\) – M \(\frac{di_2}{dt}\)
C. V (t) = R1i1 + L1 \(\frac{di_1}{dt}\) – M \(\frac{di_2}{dt}\)
D. V (t) = R1i1 – L1 \(\frac{di_1}{dt}\) + M \(\frac{di_2}{dt}\)
Answer» D. V (t) = R1i1 – L1 \(\frac{di_1}{dt}\) + M \(\frac{di_2}{dt}\)
Discussion