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AC Fundamentals, Circuit and Circuit Theory

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

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

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AC Fundamentals, Circuit and Circuit Theory
Which of the following coil will have large resonant frequency?

A coil with large distributed capacitance
A coil with low distributed capacitance
A coil with large resistance
A coil with low resistance

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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

84.84 sin 3141
42.42 sin 314 t
60 sin 50 t
60 sin 25 t

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

None of the listed here
Inductance
Capacitance
Resistance

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AC Fundamentals, Circuit and Circuit Theory
In each of the three coils of a three phase generator, an alternating voltage having an r.m.s. value of 220 V is induced. Which of the following values is indicated by the voltmeters?

220 V
220 v3 V
220/v3 V
None of these

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AC Fundamentals, Circuit and Circuit Theory
For a frequency of 200 Hz, the time period will be

0.0005 s
0.05 s
0.5 s
0.005 s

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