Apparent Power and Power Factor MCQ’s

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This set of Network Theory Multiple Choice Questions & Answers (MCQs) focuses on “Apparent Power and Power Factor”.

1. If power factor = 1, then the current to the load is ______ with the voltage across it.
a) out of phase
b) in phase
c) 90⁰ out of phase
d) 45⁰ out of phase

2. In case of resistive load, what is the power factor?
a) 4
b) 3
c) 2
d) 1

3. The highest power factor will be?
a) 1
b) 2
c) 3
d) 4

4. If power factor = 0, then the current to a load is ______ with the voltage.
a) in phase
b) out of phase
c) 45⁰ out of phase
d) 90⁰ out of phase

5. Average power is also called?
a) apparent power
b) reactive power
c) true power
d) instantaneous power

6. The expression of apparent power (Papp) is?
a) VmIm
b) VmIeff
c) VeffIeff
d) VeffIm

7. For reactive load, the power factor is equal to?
a) 0
b) 1
c) 2
d) 3

8. If we apply a sinusoidal voltage to a circuit, the product of voltage and current is?
a) true power
b) apparent power
c) average power
d) reactive power

9. The power factor is called leading power factor in case of ____ circuits.
a) LC
b) RC
c) RL
d) RLC

10. The power factor=?
a) sinθ
b) cosθ
c) tanθ
d) secθ

11. The power factor is the ratio of ________ power to the ______ power.
a) average, apparent
b) apparent, reactive
c) reactive, average
d) apparent, average

12. The term lagging power factor is used in which circuits?
a) RLC
b) RC
c) RL
d) LC

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