Power factor and three-phaseQuestion 1394 of 1506

A single-phase motor on a 208 V supply draws 10 A at a power factor of 0.8. What is the true power?

  1. 0.416 kW
  2. 2.08 kW
  3. 1.664 kW
  4. 2.60 kW
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Correct answer: 1.664 kW

P = V × I × PF = 208 × 10 × 0.8 = 1664 W = 1.664 kW.

Source: Computed, 11.3: Calculating Power Factor

Practice power factor and three-phase

Questions last reviewed: 18 October 2026