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.

M(t) = 2, 0 t<4; t2, t 4;

A. nThe Laplace transform of W (t) is ___________
B. ( frac{2}{s} e^{-4s} left( frac{2}{s^3} frac{8}{s^2} frac{14}{s} right) )
C. ( frac{2}{s} + e^{-4s} left( frac{2}{s^3} frac{8}{s^2} frac{14}{s} right) )
D. ( frac{2}{s} e^{-4s} left( frac{2}{s^3} + frac{8}{s^2} + frac{14}{s} right) )
E. ( frac{2}{s} + e^{-4s} left( frac{2}{s^3} + frac{8}{s^2} + frac{14}{s} right) )
Answer» E. ( frac{2}{s} + e^{-4s} left( frac{2}{s^3} + frac{8}{s^2} + frac{14}{s} right) )
Discussion
2.

The Current Transformer supplies current to the current coil of a power factor meter, energy meter and, an ammeter. These are connected as?

A. All coils in parallel
B. All coils in series
C. Series-parallel connection with two in each arm
D. Series-parallel connection with one in each arm
Answer» C. Series-parallel connection with two in each arm
Discussion
3.

For any given signal, average power in its 8 harmonic components as 50 mW each and fundamental component also has 50 mV power. Then, average power in the periodic signal is _______________

A. 750
B. 400
C. 100
D. 50
Answer» C. 100
Discussion
4.

Two similar coils have self-inductance of 20 mH each. Coefficient of coupling is 0.4. The mutual inductance M is ______________

A. 2.5 mH
B. 8 mH
C. 7 mH
D. 1 mH
Answer» C. 7 mH
Discussion
5.

An RLC series circuit has R = 7.07 , L = .707 H and C = 7.07 F. At Half power frequencies the circuit impedance is ___________

A. 7.07
B. 10
C. 14.14
D. 20
Answer» C. 14.14
Discussion
6.

A coil has resistance R and inductance L. At = the phase angle between voltage and current is _____________

A. 0
B. 180
C. 45
D. 90
Answer» E.
Discussion
7.

In a two terminals network the open circuit voltage measured at the given terminals is 110 V and short circuit currents at the same terminals 10 A. If a load of 50 resistance is connected at the terminals, load current is ___________

A. 1.8 A
B. 1.25 A
C. 6 A
D. 6.25 A
Answer» B. 1.25 A
Discussion
8.

Poles and zeros of a driving point function of a network are simple and alternate on j axis. The network consists of ___________

A. R and C
B. L and C
C. R and L
D. R, L and C
Answer» C. R and L
Discussion
9.

In an unloaded transformer, the flux limiting the primary is 10 mWb and secondary is 30 mWb. The coefficient of coupling is ____________

A. 1
B. 0.1
C. 0.33
D. 0.67
Answer» D. 0.67
Discussion
10.

An RLC series circuit has Q = 100 and 0 = 20 rad/sec. The bandwidth is ____________

A. 0.2 rad/sec
B. 2 rad/sec
C. 20 rad/sec
D. 2000 rad/sec
Answer» B. 2 rad/sec
Discussion
11.

A constant k band pass filter has a pass band from 100 to 400 Hz. The resonant frequency of series and shunt arms is ____________

A. 300 Hz
B. 250 Hz
C. 200 Hz
D. 150 Hz
Answer» D. 150 Hz
Discussion
12.

Two coils having self-inductances of 1 mH and 2 mH are mutually coupled. The maximum possible mutual inductance is ___________

A. 1.414 mH
B. 2 mH
C. 1 mH
D. 5.5 mH
Answer» B. 2 mH
Discussion
13.

A network has two branches in parallel. One branch contains impedance Za and the other branch has impedance Zb. If it is fed from an AC voltage V of frequency f, the current through Za depends, on which of the following?

A. V, Z<sub>a</sub>, Z<sub>b</sub>
B. V, Z<sub>a</sub>
C. Z<sub>a</sub>, Z<sub>b</sub>
D. V, Z<sub>a</sub>, f
Answer» E.
Discussion
14.

The resistance of a 230 V, 100 W lamp is ____________

A. 529
B. 2300
C. 5290
D. 23
Answer» B. 2300
Discussion