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AC Fundamentals, Circuit and Circuit Theory

AC Fundamentals, Circuit and Circuit Theory
In the case of an unsymmetrical alternating current the average value must always be taken over

The half cycle
Unsymmetrical part of the wave form
The quarter cycle
The whole cycle

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AC Fundamentals, Circuit and Circuit Theory
The time constant of a series R-C circuit is given by

RC2
R2C
R/C
RC

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AC Fundamentals, Circuit and Circuit Theory
The r.m.s. value of a sinusoidal A.C. current is equal to its value at an angle of ________ degrees.

90
30
60
45

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AC Fundamentals, Circuit and Circuit Theory
Two waves of the same frequency have opposite phase when the phase angle between them is

180°
360°
0°
90°

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AC Fundamentals, Circuit and Circuit Theory
A pure inductance connected across 250 V, 50 Hz supply consumes 100 W. This consumption can be attributed to

The statement given is false
The reactance of the inductor
The big size of the inductor
The current flowing in the inductor

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AC Fundamentals, Circuit and Circuit Theory
Magnitude of current at resonance in R-L-C circuit

Depends upon the magnitude of C
Depends upon the magnitude of R
Depends upon the magnitude of L
Depends upon the magnitude of R, Land C

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MORE MCQ ON AC Fundamentals, Circuit and Circuit Theory

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