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AC Fundamentals, Circuit and Circuit Theory

AC Fundamentals, Circuit and Circuit Theory
What will be the phase angle between two alternating waves of equal frequency, when one wave attains maximum value the other is at zero value?

180°
30°
45°
90°

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

Square wave
Triangular wave
Sine wave
Half wave rectified sine wave

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AC Fundamentals, Circuit and Circuit Theory
The purpose of a parallel circuit resonance is to magnify

Voltage
Power
Frequency
Current

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AC Fundamentals, Circuit and Circuit Theory
Wire-wound resistors are unsuitable for use at high frequencies because they

Are likely to melt under excessive eddy current heat
Consume more power
Exhibit unwanted inductive and capacitive effects
Create more electrical noise

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

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AC Fundamentals, Circuit and Circuit Theory
The voltage of domestic supply is 220 V. This figure represents

Peak value
Mean value
Average value
R.m.s. value

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