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AC FUNDAMENTALS, CIRCUIT AND CIRCUIT THEORY

AC Fundamentals, Circuit and Circuit Theory
In a purely inductive circuit

Actual power is zero
Reactive power is zero
None of the listed here
Apparent power is zero

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AC Fundamentals, Circuit and Circuit Theory
The product of apparent power and cosine of the phase angle between circuit voltage and current is

True power
Reactive power
Instantaneous power
Volt-amperes

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AC Fundamentals, Circuit and Circuit Theory
The peak value of a sine wave is 200 V. Its average value is

141.4 V
127.4 V
200 V
282.8 V

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AC Fundamentals, Circuit and Circuit Theory
Which of the following waves has the highest value of peak factor ?

Half wave rectified sine wave
Square wave
Sine wave
Triangular wave

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

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

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