Explore topic-wise MCQs in Network Theory.

This section includes 14 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, bulb X uses 48 W when lit, bulb Y uses 22 W when lit and bulb Z uses 14.4 W when lit. The number of additional bulbs in parallel to this circuit, that would be required to below the fuse is _______________

A. 4
B. 5
C. 6
D. 7
Answer» B. 5
Discussion
2.

In the circuit given below, the value of the voltage source E is _______________

A. -65 V
B. 40 V
C. -60 V
D. 65 V
Answer» B. 40 V
Discussion
3.

For the circuit given below, what is the value of the Q factor for the inductor?

A. 4.74
B. 4.472
C. 4.358
D. 4.853
Answer» D. 4.853
Discussion
4.

In a series resonant circuit, VC = 300 V, VL = 300 V and VR = 100 V. What is the value of the source voltage?

A. Zero
B. 100 V
C. 350 V
D. 200 V
Answer» C. 350 V
Discussion
5.

In the circuit given below, the resonant frequency is _______________

A. \(\frac{1}{2\sqrt{2} π}\) Hz
B. \(\frac{1}{2π}\) Hz
C. \(\frac{1}{4π}\) Hz
D. \(\frac{1}{\sqrt{2}2π}\) Hz
Answer» D. \(\frac{1}{\sqrt{2}2π}\) Hz
Discussion
6.

A capacitor of capacitance 50 μF is connected in parallel to another capacitor of capacitance 100 μF. They are connected across a time-varying voltage source. At a particular time, the current supplied by the source is 5 A. The magnitude of instantaneous current through the capacitor of capacitance 100 μF is?

A. 2.33 A
B. 3.33 A
C. 1.33 A
D. 4.33 A
Answer» C. 1.33 A
Discussion
7.

A capacitor of capacitance 50 μF is connected in parallel to another capacitor of capacitance 100 μF. They are connected across a time-varying voltage source. At a particular time, the current supplied by the source is 5 A. The magnitude of instantaneous current through the capacitor of capacitance 50 μF is?

A. 1.57 A
B. 1.87 A
C. 1.67 A
D. 2.83 A
Answer» D. 2.83 A
Discussion
8.

The resistance of copper motor winding at t=20°C is 3.42 Ω. After extended operation at full load, the motor windings measures 4.22 Ω. If the temperature coefficient is 0.0426, what is the rise in temperature?

A. 60°C
B. 45.2°C
C. 72.9°C
D. 10.16°C
Answer» E.
Discussion
9.

An air capacitor of capacitance 0.005 μF is connected to a direct voltage of 500 V. It is disconnected and then immersed in oil with a relative permittivity of 2.5. The energy after immersion is?

A. 275 μJ
B. 250 μJ
C. 225 μJ
D. 625 μJ
Answer» C. 225 μJ
Discussion
10.

When a DC voltage is applied to an inductor, the current through it is found to build up in accordance with I = 20(1-e-50t). After the lapse of 0.02 s, the voltage is equal to 2 V. What is the value of inductance?

A. 2 mH
B. 5.43 mH
C. 1.54 mH
D. 0.74 mH
Answer» C. 1.54 mH
Discussion
11.

In the figure given below, the voltage source provides the circuit with a voltage V. The number of non-planar graph of independent loop equations is ______________

A. 8
B. 12
C. 7
D. 5
Answer» E.
Discussion
12.

In the circuit given below, the voltage across A and B is?

A. 13.04 V
B. 17.84 V
C. 12 V
D. 10.96 V
Answer» C. 12 V
Discussion
13.

In the circuit given below, the equivalent capacitance is ____________

A. 1.625 F
B. 1.583 F
C. 0.583 F
D. 0.615 F
Answer» E.
Discussion
14.

The current through an electrical conductor is 1A when the temperature of the conductor 0°C and 0.7 A when the temperature is 100°C. The current when the temperature of the conductor is 1200°C is ___________

A. 0.08 A
B. 0.16 A
C. 0.32 A
D. 0.64 A
Answer» C. 0.32 A
Discussion