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AC Fundamentals, Circuit and Circuit Theory

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

32 kW
80 kW
40 kW
36 kW

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AC Fundamentals, Circuit and Circuit Theory
In a highly capacitive circuit the

Reactive power is more than the apparent power
Actual power is more than its reactive power
Reactive power is more than the actual power
Apparent power is equal to the actual power

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AC Fundamentals, Circuit and Circuit Theory
The r.m.s. value of half wave rectified sine wave is 200 V. The r.m.s. value of full wave rectified AC. will be

282.8 V
141.4 V
111 V
100 V

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AC Fundamentals, Circuit and Circuit Theory
The main cause of silting up a channel,

Defective head regulator
Non-regime section
All of these
Inadequate slope

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

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

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AC Fundamentals, Circuit and Circuit Theory
Form Factor is the ratio of

r.m.s. value/peak value
Average value/peak value
r.m.s. value/average value
Average value/r.m.s. value

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