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Network TheoryAC Power

For the same 200 V, 10 A, 0.6 lagging load, the reactive power magnitude is?

  • A800 var
  • B1200 var
  • C1600 var
  • D2000 var
Report an error
Correct Answer: C. 1600 var
Explanation: sin(phi)=sqrt(1-0.6^2)=0.8, so Q=VI sin(phi)=200×10×0.8=1600 var.
Reference: Standard network theory: single-phase reactive power numerical
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