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AC Fundamentals, Circuit and Circuit Theory

AC Fundamentals, Circuit and Circuit Theory
Power factor of the following circuit will be unity

None of the listed here
Capacitance
Inductance
Resistance

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AC Fundamentals, Circuit and Circuit Theory
The effective resistance of an iron-cored choke working on ordinary supply frequency is more than its true resistance because of

Skin effect
Capacitive effect between adjacent coil turns
Iron loss in core
Increase in temperature

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AC Fundamentals, Circuit and Circuit Theory
In a pure inductive circuit if the supply frequency is reduced to 1/2, the current will

Be doubled
Be reduced to one fourth
Be four times as high
Be reduced by half

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

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

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AC Fundamentals, Circuit and Circuit Theory
In an A.C. circuit power is dissipated in

Inductance only
Capacitance only
Resistance only
None of the listed here

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AC Fundamentals, Circuit and Circuit Theory
Ohm is unit of all of the following except

Capacitive reactance
Capacitance
Inductive reactance
Resistance

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MORE MCQ ON AC Fundamentals, Circuit and Circuit Theory

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