Power factor of the following circuit will be zero__________?

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 unity

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

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. In a series resonant circuit, the impedance of the circuit is___________?

    A. minimum
    B. maximum
    C. zero
    D. none of the above