Welcome to your AC Circuits MCQ practice assessment.

Form Factor is the ratio of

The reactance offered by a capacitor to alternating current of frequency 50 Hz is 20 Q. If frequency is increased to 100 Hz, reactance becomes _____ ohms

The peak value of a sine wave is 200 V. Its average value is

Capacitors for power factor correction are rated in

In an AC. circuit, a low value of kVAR compared with kW indicates

The voltage of domestic supply is 220V. This figure represents

If two sine waves of the same frequency have a phase difference of JT radians, then

Pure inductive circuit takes power from the A.C. line when

In a series resonant circuit, the impedance of the circuit is

The form factor is the ratio of

A sine wave has a frequency of 50 Hz. Its angular frequency is _______ radian/second

The period of a sine wave is _50 milli seconds. Its frequency is

The r.m.s. value of a sinusoidal A.C. current is equal to its value at an angle of______degrees

Inductance affects the direct current flow

A heater is rated as 230 V, 10 kW, A.C. The value 230 V refers to

For the same peak value which of the following wave will ‘have the highest r.m.s. value ?

If a sinusoidal wave has frequency of 50 Hz with 30 A r.m.s. current which of the following equation represents this wave ?

The phase difference between voltage and current wave through a circuit element is given as 30°. The essential condition is that

The input of an A.C. circuit having power factor of 0.8 lagging is 40 kVA The power drawn by the circuit is

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