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?

Related Mcqs:

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

A. 100 n B. 50 jt C. 25 JT D. 5 n...

In a highly capacitive circuit the__________?

A. apparent power is equal to the actual power B. reactive power is more than the apparent power C. reactive power is more than the actual power D. actual power is more than its reactive power...

In the case of an unsymmetrical alternating current the average value must always be taken over__________?

A. unsymmetrical part of the wave form B. the quarter cycle C. the half cycle D. the whole cycle...

At very low frequencies a series R-C circuit behaves as almost purely___________?

A. resistive B. inductive C. capacitive D. none of the above...

The time constant of a series R-C circuit is given by____________?

A. R/C B. RC2 C. RC D. R2C...