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

Form factor for a sine wave is

Form Factor is the ratio of

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

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

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

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

The time constant of the capacitance circuit is defined as the time during which voltage

Inductance affects the direct current flow

Capacitors for power factor correction are rated in

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

Capacitive reactance is more when

The period of a wave is

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

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

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

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