Welcome to your AC Circuits MCQ practice assessment.

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

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

Capacitors for power factor correction are rated in

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

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

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

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

Power factor of an inductive circuit is usually improved by connecting capacitor to it in

. In a pure inductive circuit

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

Form Factor is the ratio of

For a frequency of 200 Hz, the time period will be

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

Capacitive reactance is more when

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

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

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