The form factor for a sinusoidal `A.C` is

The ratio of rms value to the average value of current over positive half cycle for sinusoidal "AC" is

The frequency of sinusoidal A.C. voltage is 50 Hz. How many times does have voltage become zero in 5s ?

Two 1000 watt hair dryers are connected parallel to 200 volt peak (sinusoidal) A.C. supply Total rms current drawn from supply should be

Which of the following quantities have zero average value over a cycle.If an inductor coil having some resistance is connected to a sinusoidal AC source.

The from factor of an a.c. generator is given by

The power factor of an a.c. circuit is givne by cos phi =

The power factor of a CR circuit is (1)/(sqrt(2)) . If the frequency of ac signal is halved, then the power factor of the circuit becomes