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AC Fundamentals, Circuit and Circuit Theory

AC Fundamentals, Circuit and Circuit Theory
Form factor for a sine wave is

0.637
1.11
0.707
1.414

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AC Fundamentals, Circuit and Circuit Theory
In a series L-C circuit at the resonant frequency the

Voltage across C is minimum
Impedance is maximum
Current is maximum
Current is minimum

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AC Fundamentals, Circuit and Circuit Theory
The transient currents are associated with the

Applied voltage to the circuit
Resistance of the circuit
Impedance of the circuit
Changes in the stored energy in the inductors and capacitors

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AC Fundamentals, Circuit and Circuit Theory
Ohm is unit of all of the following except

Capacitive reactance
Resistance
Inductive reactance
Capacitance

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

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AC Fundamentals, Circuit and Circuit Theory
In a pure inductive circuit

The current lags behind the voltage by 90°
The current is in phase with the voltage
The current leads the voltage by 90°
The current can lead or lag by 90°

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MORE MCQ ON AC Fundamentals, Circuit and Circuit Theory

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