Welcome to your AC Circuits MCQ practice assessment.

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

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

Capacitive reactance is more when

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

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

Form Factor is the ratio of

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

The safest value of current the human body can carry for more than 3 second is

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

The square waveform of current has following relation between r.m.s. value and average value

All the rules and laws of D.C. circuit also apply to A.C. circuit containing

Inductance affects the direct current flow

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

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

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

Capacitors for power factor correction are rated in

Form factor for a sine wave is

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

. In a pure inductive circuit

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