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AC Fundamentals, Circuit and Circuit Theory

AC Fundamentals, Circuit and Circuit Theory
The r.m.s. value of half wave rectified sine wave is 200 V. The r.m.s. value of full wave rectified AC. will be

100 V
282.8 V
141.4 V
111 V

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AC Fundamentals, Circuit and Circuit Theory
If two sinusoids of the same frequency but of different amplitudes and phase angles are subtracted, the resultant is

A sinusoid of double the frequency
A sinusoid of half the original frequency
A sinusoid of the same frequency
None of the listed here

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AC Fundamentals, Circuit and Circuit Theory
All definitions of power factor of a series R-L-C circuit are correct except

Ratio of J and Z
Ratio of kW and kVA
Ratio of W and VA
Ratio of net reactance and impedance

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AC Fundamentals, Circuit and Circuit Theory
In an A.C. circuit power is dissipated in

Resistance only
Capacitance only
Inductance only
None of the listed here

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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.

25 JT
100 n
5 n
50 jt

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AC Fundamentals, Circuit and Circuit Theory
In a series L-C circuit at the resonant frequency the

Impedance is maximum
Current is minimum
Current is maximum
Voltage across C is minimum

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