Power factor - MCQs with answers

Power factor - MCQs with answers

Q1. What is maximum value of power factor?

a. 0.5
b. 1
c. 1.5
d. 0.95

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Q2. Active power and apparent power are respectively represented by?

a. kW and kVAR
b. kVAR and kVA
c. kVA and kVAR
d. kW and kVA

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Q3. Which among the following happens in a low power factor?

a. Large kVA rating of the equipment.
b. Greater conductor size.
c. Reduced handling capacity of the system.
d. All of the above.

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Q4. Lower power factor is usually not due to

a. Discharge lamp.
b. Arc lamps.
c. Incandescent lamps.
d. Induction furnace.

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Q5. For a consumer what is the most economical power factor?

a. 0.25 – 0.5 lagging
b. 0.25 – 0.5 leading.
c. 0.85 – 0.95 lagging.
d. 0.85 – 0.95 leading.

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Q6. The primary reason for the low power factor is due to the installation of

a. Induction motors
b. DC motors
c. Synchronous motors.
d. Commutator motors.

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Q7. For which among the following consumers is penalty imposed for low power factor?

a. Residential and commercial consumers.
b. Industrial consumers.
c. Agricultural consumers.
d. All of the above.

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