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AC Fundamentals, Circuit and Circuit Theory

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

5 n
50 jt
100 n
25 JT

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AC Fundamentals, Circuit and Circuit Theory
The r.m.s. value of pure cosine function is

Zero
0.5 of peak value
0.707 of peak value
Same as peak value

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AC Fundamentals, Circuit and Circuit Theory
In a sine wave the slope is constant

No where
Between 180° and 270°
Between 90° and 180°
Between 0° and 90°

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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
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
All definitions of power factor of a series R-L-C circuit are correct except

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

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