If the kVAR of an electric circuit is equal to ‘ZERO’, then the operating power factor of the same circuit is equal to:

Question

Question

This question was previously asked in

PGCIL DT Electrical 12 March 2022 (NR II) Official Paper

Answer 1

The correct answer is option 3):(1)

Concept:

kVAR is the measure of reactive power required by inductive loads such as induction motors, induction furnaces.
For the purely resistive circuit, the power factor is 1 (perfect), because the reactive power equals zero.
The power factor is the ratio between real and apparent power. That means the higher the percentage of the KVAR in your load, the lower the ratio of the kW to the kVA. The outcome gives you a poor power factor.
A power factor of 0 indicates that the voltage and current are 90-degrees out of phase. In semiconductor circuits powered from the AC mains, a bridge rectifier converts the AC power into DC.

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