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AC Fundamentals, Circuit and Circuit Theory

AC Fundamentals, Circuit and Circuit Theory
In each of the three coils of a three phase generator, an alternating voltage having an r.m.s. value of 220 V is induced. Which of the following values is indicated by the voltmeters?

220 V
220/v3 V
220 v3 V
None of these

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

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

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AC Fundamentals, Circuit and Circuit Theory
The input of an A.C. circuit having power factor of 0.8 lagging is 40 kVA The power drawn by the circuit is

80 kW
36 kW
40 kW
32 kW

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AC Fundamentals, Circuit and Circuit Theory
In a series resonant circuit, the impedance of the circuit is

Maximum
Minimum
None of these
Zero

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AC Fundamentals, Circuit and Circuit Theory
Power factor of an inductive circuit is usually improved by connecting capacitor to it in

Parallel
None of the listed here
Both parallel and series
Series

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AC Fundamentals, Circuit and Circuit Theory
In any A.C. circuit always

Reactive power is more than actual power
Apparent power is more than actual power
Actual power is more than reactive power
Reactive power is more than apparent power

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