Power factor and three-phaseQuestion 1396 of 1506

A load draws 10 kVA of apparent power and 9.0 kW of true power. What is the reactive power?

  1. 19.0 kvar
  2. 13.5 kvar
  3. 4.36 kvar
  4. 1.00 kvar
Show answer

Correct answer: 4.36 kvar

Q = √(S² − P²) = √(10² − 9.0²) = 4.36 kvar.

Source: Computed, 11.4: Practical Power Factor Correction

Practice power factor and three-phase

Questions last reviewed: 18 October 2026