Explore topic-wise MCQs in Network Theory.

This section includes 10 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.

A coil of 300 turns is wound on a non-magnetic core having a mean circumference of 300 mm and a cross sectional area of 300 mm2. The inductor of the coil corresponding to a magnetizing electric current of 3 A will be?

A. 37.68 H
B. 47.68 H
C. 113.04 H
D. 120.58 H
Answer» D. 120.58 H
Discussion
2.

An alternating voltage V = 150 sin(314)t is supplied to a device which offers a resistance of 20 in forward direction of electric current while preventing the flow of electric current in reverse direction. The form factor is ___________

A. 0.57
B. 0.318
C. 1.414
D. 1.57
Answer» E.
Discussion
3.

Potential of earth is 50 V. If the potential difference between anode and cathode (earthed) is measured as 150 V, actual voltage on anode is __________

A. 0 V
B. 100 V
C. 200 V
D. 250 V
Answer» D. 250 V
Discussion
4.

The rms value of the sine wave is 100 A. Its peak value is ____________

A. 70.7 A
B. 141.4 A
C. 150 A
D. 282.8 A
Answer» C. 150 A
Discussion
5.

The form factor of sinusoidal alternating electric current is ___________

A. 0
B. 1
C. 1.11
D. 1.15
Answer» D. 1.15
Discussion
6.

The two windings of a transformer have an inductor of 2 H each. If mutual inductor between them is also 2 H, then which of the following is correct?

A. Turns ratio of the transformer is also 2
B. Transformer is an ideal transformer
C. It is a perfect transformer
D. It is a perfect as well as an ideal transformer
Answer» D. It is a perfect as well as an ideal transformer
Discussion
7.

A 3 V DC supply with an internal resistance of 2 supplies a passive non-linear resistance characterized by the relation VNL = (I_{NL}^{2} ). The power dissipated in the resistance is ___________

A. 1 W
B. 1.5 W
C. 2.5 W
D. 3 W
Answer» B. 1.5 W
Discussion
8.

The resistance of a strip of copper of rectangular cross section is 2 . A metal of resistivity twice that of a copper is coated on its upper surface to a thickness equal to that of copper strip. The resistance of composite strip will be _________

A. ( frac{3}{4} )
B. ( frac{4}{3} )
C. ( frac{3}{2} )
D. 6
Answer» C. ( frac{3}{2} )
Discussion
9.

The energy stored in the magnetic field at a solenoid 100 cm long and 10 cm diameter wound with 1000 turns of wire carrying an electric current of 10 A, is ___________

A. 1.49 J
B. 0.49 J
C. 0.1 J
D. 1 J
Answer» C. 0.1 J
Discussion
10.

The basic elements of an electric circuit are _____________

A. R, L and C
B. Voltage
C. Current
D. Voltage as well as current
Answer» B. Voltage
Discussion