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

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

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

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

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 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

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

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 voltage of domestic supply is 220V. This figure represents

Inductance affects the direct current flow

Pure inductive circuit

Capacitors for power factor correction are rated in

The form factor is the ratio of

. If two sinusoids of the same frequency but of different amplitudes and phase angles are subtracted, the resultant is

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

In series resonant circuit, increasing inductance to its twice value and reducing capacitance to its half value

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

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

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