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Network TheoryPower Factor Correction

A 1 kW load operates at 0.8 lagging power factor. The reactive power is approximately 0.75 kVAR. To correct the power factor ideally to unity, the shunt capacitor bank should supply approximately?

  • A0.25 kVAR leading
  • B0.5 kVAR leading
  • C0.75 kVAR leading
  • D1.25 kVAR leading
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Correct Answer: C. 0.75 kVAR leading
Explanation: Unity power factor requires cancellation of the load's lagging reactive power, so the capacitor should provide about 0.75 kVAR leading.
Reference: Standard network theory: reactive compensation
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