Welcome to your AC Circuits

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

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

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

Inductance affects the direct current flow

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

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

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

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

Capacitors for power factor correction are rated in

. In a pure inductive circuit

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

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

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

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

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