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Calculate the power factor using the data: P=15 W, S=25 VA.

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Calculate the power factor using the data: P=15 W, S=25 VA.

(a) 0.5

(b) 0.9

(c) 0.4

(d) 0.6

This question was posed to me by my school principal while I was bunking the class.

I'm obligated to ask this question of Traction Drives topic in chapter Traction Drives of Electric Drives

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The correct choice is (d) 0.6

To explain I would say: The power factor is the ratio of active power and apparent power. The value of the power factor is P÷S=15÷25=.6.

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