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AC Fundamentals, Circuit and Circuit Theory

AC Fundamentals, Circuit and Circuit Theory
In a loss-free R-L-C circuit the transient current is

Square wave
Sinusoidal
Non-oscillating
Oscillating

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AC Fundamentals, Circuit and Circuit Theory
The product of apparent power and cosine of the phase angle between circuit voltage and current is

Instantaneous power
Volt-amperes
Reactive power
True power

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AC Fundamentals, Circuit and Circuit Theory
Inductance of coil

Increases with the increase in supply frequency
Decreases with the increase in supply frequency
Is unaffected by the supply frequency
Becomes zero with the increase in supply frequency

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

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

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AC Fundamentals, Circuit and Circuit Theory
Which of the following coil will have large resonant frequency?

A coil with low distributed capacitance
A coil with large resistance
A coil with low resistance
A coil with large distributed capacitance

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AC Fundamentals, Circuit and Circuit Theory
A sine wave has a frequency of 50 Hz. Its angular frequency is __________ radian/second.

100 n
50 jt
5 n
25 JT

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