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

Related Mcqs:

1. 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. 12 kW B. 22 kW C. 32 kW D. 64 kW...

2. The apparent power drawn by an A.C. circuit is 10 kVA and active power is 8 kW. The reactive power in the circuit is_________?

   A. 4 kVAR B. 6 kVAR C. 8 kVAR D. 16 kVAR...

3. Pure inductive circuit takes power from the A.C. line when_________?

   A. applied voltage decreases but current increases B. applied voltage increases but current decreases C. both applied voltage and current increase D. both applied voltage and current decrease...

4. In a pure inductive circuit if the supply frequency is reduced to 1/2, the current will__________?

   A. be reduced by half B. be doubled C. be four times as high D. be reduced to one fourth...

5. In a circuit containing R, L and C, power loss can take place in____________?

   A. C only B. L only C. R only D. all above...

6. In an A.C. circuit power is dissipated in____________?

   A. resistance only B. inductance only C. capacitance only D. none of the above...

7. Power factor of an electrical circuit is equal to____________?

   A. R/Z B. cosine of phase angle difference be-tween current and voltage C. kW/kVA D. ratio of useful current to total cur¬rent Iw/I E. all of these...

8. Power factor of the following circuit will be zero__________?

   A. resistance B. inductance C. capacitance D. both B. and C....

9. The power factor at resonance in R-L- C parallel circuit is________?

   A. zero B. 0.08 lagging C. 0.8 leading D. unity...

10. All definitions of power factor of a series R-L-C circuit are correct except__________?

    A. ratio of net reactance and impedance B. ratio of kW and kVA C. ratio of J and Z D. ratio of W and VA...