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AC Fundamentals, Circuit and Circuit Theory

AC Fundamentals, Circuit and Circuit Theory
The reactance offered by a capacitor to alternating current of frequency 50 Hz is 20 Q. If frequency is increased to 100 Hz, reactance becomes __________ ohms.

5
15
2.5
10

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AC Fundamentals, Circuit and Circuit Theory
The purpose of a parallel circuit resonance is to magnify

Power
Current
Frequency
Voltage

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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
60 sin 50 t
42.42 sin 314 t
84.84 sin 3141

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AC Fundamentals, Circuit and Circuit Theory
The frequency of domestic power supply in India is

50 Hz
150 Hz
200 Hz
250 Hz

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

None of the listed here
Inductance only
Resistance only
Capacitance only

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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
282.8 V
200 V
127.4 V

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