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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 v3 V
220/v3 V
220 V
None of these

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

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

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AC Fundamentals, Circuit and Circuit Theory
Inductance of a coil Varies

Both of the listed here
Directly as the cross-sectional area of magnetic core
Inversely as the length of the iron path
None of the listed here

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AC Fundamentals, Circuit and Circuit Theory
The equation of 50 Hz current sine wave having r.m.s. value of 60 A is

60 sin 25 t
42.42 sin 314 t
60 sin 50 t
84.84 sin 3141

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AC Fundamentals, Circuit and Circuit Theory
The ratio of active power to apparent power is known as factor.

Demand
Load
Form
Power

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

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

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