Power factor and three-phaseQuestion 1391 of 1506

A single-phase motor on a 240 V supply draws 25 A at a power factor of 0.9. What is the true power?

0.600 kW
5.40 kW
2.62 kW
6.67 kW

Show answer

Correct answer: 5.40 kW

P = V × I × PF = 240 × 25 × 0.9 = 5400 W = 5.40 kW.

Source: Computed, 11.3: Calculating Power Factor

Questions last reviewed: 18 October 2026

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