page 4 | Electric Circuit Analysis MCQ - Electrical Engineering Objective

Q41. It is desired to have an mmf of 100 amp turns in a magnetic circuit. The coil has 50 turns and 2 ohms resistance the d.c. voltage applied to the coil should be

4 volts

2 volts

14 volts

0.5 volts

Q42. In the Standard B-H curve X axis and Y axis intercepts respectively represents

residual magnetism and coercive force

Coercive force and residual magnetism

Hysteresis loss and Flux

Flux and MMF

Q43. Principle of statically induced emf is used in

transformer

choke

generator

battery

Q44. The energy store in the magnetic field at a solenoid 30cm long and 3cm diameter wound with 1000 turns of wire carrying a current of 10A, is

0.015 Joule

0.15 Joule

0.5 Joule

1.15 Joule

Q45.

Find the equivalent inductance of series combination of inductors shown in the above figure.

\(L_{Eq} = L_1 + L_2+2M \)

\(L_{Eq} = L_1 + L_2-2M \)

\(L_{Eq} = L_1 * L_2+2M \)

\(L_{Eq} = L_1 * L_2-2M \)

Q46. The mutual inductance between two unity coupled coils of 9H and 4H is

36 H

13H

2.2 H

6H

Q47. Which of the following waveform has least form factor?

Rectangular wave

Triangular wave

Sine wave

Square wave

Q48. A Current is alternating current if

Direction of current changes with time

Magnitude of current remains constant throughout the period

Magnitude and direction of current changes with time

Magnitude and current changes with time

Q49. Which of the following statements is NOT correct about a sine wave?

Frequency is the reciprocal of time period.

Time period is the number of cycles per seconds.

RMS value is 0.7 times the peak value.

Peak voltage is another name for amplitude.

Q50. The frequency of a sinusoidal signal is 50 Hz. What will be the period of the signal?

20 ms

30 ms

50 ms

10 ms

MCQ

ELECTRICAL CIRCUIT ANALYSIS