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AC Fundamentals, Circuit and Circuit Theory

AC Fundamentals, Circuit and Circuit Theory
What will be the phase angle between two alternating waves of equal frequency, when one wave attains maximum value the other is at zero value?

180°
45°
30°
90°

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

Power
Current
Voltage
Frequency

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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

141.4 V
282.8 V
111 V
100 V

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

Resistance only
Capacitance only
Inductance only
None of the listed here

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AC Fundamentals, Circuit and Circuit Theory
Inductance of coil

Decreases with the increase in supply frequency
Is unaffected by the supply frequency
Becomes zero with the increase in supply frequency
Increases with the increase in supply frequency

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

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

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