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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?

30°
90°
45°
180°

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AC Fundamentals, Circuit and Circuit Theory
The peak value of a sine wave is 200 V. Its average value is

200 V
127.4 V
282.8 V
141.4 V

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

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

Capacitance
None of the listed here
Inductance
Resistance

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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
Which of the following circuit component opposes the change in the circuit voltage ?

Resistance
Conductance
Capacitance
Inductance

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