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Network TheoryAC Power

A load has apparent power 5 kVA and real power 4 kW. Its reactive power magnitude is?

  • A1 kVAR
  • B2 kVAR
  • C3 kVAR
  • D4 kVAR
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Correct Answer: C. 3 kVAR
Explanation: Using S^2=P^2+Q^2, Q=sqrt(5^2-4^2)=3 kVAR.
Reference: Standard network theory: reactive power numerical
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