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.

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 μH
B. 47.68 μH
C. 113.04 μH
D. 120.58 μH
Answer» D. 120.58 μH
Discussion
2.

An alternating voltage V = 150 sin(314)t is supplied to a device which offers a resistance of 20 Ω 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. is measured as 150 V, actual voltage on anode is __________a) 0 Vb) 100 Vc) 200 Vd) 250 V
Answer» D. is measured as 150 V, actual voltage on anode is __________a) 0 Vb) 100 Vc) 200 Vd) 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 average power delivered to the 6 Ω load in the circuit of figure below is ___________

A. 8 W
B. 76.68 W
C. 625 kW
D. 2.50 kW
Answer» C. 625 kW
Discussion
6.

The form factor of sinusoidal alternating electric current is ___________

A. 0
B. 1
C. 1.11
D. 1.15
Answer» D. 1.15
Discussion
7.

In the circuit given below, the value of RL for which it absorbs maximum power is ___________

A. \(\frac{400}{3}\) Ω
B. \(\frac{2}{9}\) kΩ
C. 350.38 Ω
D. \(\frac{4}{9}\) kΩ
Answer» D. \(\frac{4}{9}\) kΩ
Discussion
8.

In the circuit given below, what is the amount of maximum power transfer to R?

A. 56 W
B. 76 W
C. 60 W
D. 66 W
Answer» E.
Discussion
9.

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
10.

A 3 V DC supply with an internal resistance of 2 Ω 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
11.

In the circuit shown below what is the value of RL for which maximum power is transferred to RL?

A. 2.4 Ω
B. \(\frac{8}{3}\) Ω
C. 4 Ω
D. 6 Ω
Answer» D. 6 Ω
Discussion
12.

The resistance of a strip of copper of rectangular cross section is 2 Ω. 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. \(\frac{3}{4}\) Ω
B. \(\frac{4}{3}\) Ω
C. \(\frac{3}{2}\) Ω
D. 6 Ω
Answer» C. \(\frac{3}{2}\) Ω
Discussion
13.

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
14.

In the circuit given below, the value of the maximum power transferred through RL is ___________

A. 0.75 W
B. 1.5 W
C. 2.25 W
D. 1.125 W
Answer» B. 1.5 W
Discussion
15.

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