Power factor of the following circuit will be unity

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. Power factor of the following circuit will be zero__________?

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

4. 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...

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

   A. parallel B. series C. either A. or (b) D. none of the above...

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

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

7. The power factor of a D.C. circuit is always__________?

   A. less than unity B. unity C. greater than unity D. zero...

8. 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...

9. Which of the following circuit component opposes the change in the circuit voltage ?

   A. Inductance B. Capacitance C. Conductance D. Resistance...

10. If resistance is 20 Q. and inductance is 27 in a R-L series circuit, then time constant of this circuit will be________?

    A. 0.001 s B. 0.1 s C. 10 s D. 100 s...