Explore topic-wise MCQs in Network Theory.

This section includes 7 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 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
2.

A capacitor of capacitance 50 F is connected in parallel to another capacitor of capacitance 100 F. 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 F is?

A. 2.33 A
B. 3.33 A
C. 1.33 A
D. 4.33 A
Answer» C. 1.33 A
Discussion
3.

A capacitor of capacitance 50 F is connected in parallel to another capacitor of capacitance 100 F. 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 F is?

A. 1.57 A
B. 1.87 A
C. 1.67 A
D. 2.83 A
Answer» D. 2.83 A
Discussion
4.

The resistance of copper motor winding at t=20 C is 3.42 . After extended operation at full load, the motor windings measures 4.22 . 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
5.

An air capacitor of capacitance 0.005 F 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 J
B. 250 J
C. 225 J
D. 625 J
Answer» C. 225 J
Discussion
6.

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
7.

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