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AC Fundamentals, Circuit and Circuit Theory

AC Fundamentals, Circuit and Circuit Theory
In a sine wave the slope is constant

Between 180° and 270°
Between 90° and 180°
No where
Between 0° and 90°

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AC Fundamentals, Circuit and Circuit Theory
The period of a sine wave is ___________ seconds. Its frequency is

50 Hz
30 Hz
20 Hz
40 Hz

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AC Fundamentals, Circuit and Circuit Theory
Time constant of a circuit is the time in seconds taken after the application of voltage to each

63% of maximum value
90% of the maximum value
50% of maximum value
25% of maximum value

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AC Fundamentals, Circuit and Circuit Theory
Inductance affects the direct current flow

At all the time of operation
Only at the time of turning on
At the time of turning on and off
Only at the time of turning off

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AC Fundamentals, Circuit and Circuit Theory
All definitions of power factor of a series R-L-C circuit are correct except

Ratio of J and Z
Ratio of W and VA
Ratio of kW and kVA
Ratio of net reactance and impedance

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

150 Hz
250 Hz
200 Hz
50 Hz

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