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A consumption of 200 000 kWh at a power factor of 0.9 corresponds to

  • A.244 444 kVAh
  • B.222 222 kVAh
  • C.180 000 kVAh
  • D.200 000 kVAh

Answer: B

Dividing by the power factor gives the apparent energy, so a consumer billed on this basis pays for over eleven per cent more units than it consumed actively. Correcting the power factor to unity removes the whole difference.

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