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AC Fundamentals, Circuit and Circuit Theory

AC Fundamentals, Circuit and Circuit Theory
For the same peak value which of the following wave will 'have the highest r.m.s. value?

Sine wave
Triangular wave
Square wave
Half wave rectified sine wave

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

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AC Fundamentals, Circuit and Circuit Theory
In a highly capacitive circuit the

Apparent power is equal to the actual power
Actual power is more than its reactive power
Reactive power is more than the actual power
Reactive power is more than the apparent power

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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

360°
0°
180°
90°

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AC Fundamentals, Circuit and Circuit Theory
If a sinusoidal wave has frequency of 50 Hz with 30 A r.m.s. current which of the following equation represents this wave?

42.42 sin 314 t
60 sin 25 t
84.84 sin 25 t
30 sin 50 t

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AC Fundamentals, Circuit and Circuit Theory
The best place to install a capacitor is

Very near to inductive load
Far away from the inductive load
Across the terminals of the inductive load
Any of the listed here

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