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Network TheoryAC Power

A load consumes 3 kW and 4 kVAR. Its apparent power magnitude is?

  • A1 kVA
  • B5 kVA
  • C7 kVA
  • D12 kVA
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Correct Answer: B. 5 kVA
Explanation: |S|=sqrt(P^2+Q^2)=sqrt(3^2+4^2)=5 kVA.
Reference: Standard network theory: complex power triangle numerical
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