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AC Fundamentals, Circuit and Circuit Theory

AC Fundamentals, Circuit and Circuit Theory
The apparent power drawn by an A.C. circuit is 10 kVA and active power is 8 kW. The reactive power in the circuit is

16 kVAR
8 kVAR
10 kVAR
12 kVAR

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AC Fundamentals, Circuit and Circuit Theory
The time constant of a series R-C circuit is given by

RC
RC2
R2C
R/C

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AC Fundamentals, Circuit and Circuit Theory
A pure inductance connected across 250 V, 50 Hz supply consumes 100 W. This consumption can be attributed to

The statement given is false
The big size of the inductor
The current flowing in the inductor
The reactance of the inductor

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AC Fundamentals, Circuit and Circuit Theory
The r.m.s. value and mean value is the same in the case of

Triangular wave
Square wave
Sine wave
Half wave rectified sine wave

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

Inductance only
None of the listed here
Resistance only
Capacitance only

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AC Fundamentals, Circuit and Circuit Theory
Pure inductive circuit takes power from the A.C. line when

Applied voltage decreases but current increases
Both applied voltage and current decrease
Applied voltage increases but current decreases
Both applied voltage and current increase

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