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A meter that runs fast registers

  • A.the correct energy but at the wrong rate
  • B.correctly at unity power factor but low at all other power factors
  • C.more energy than has been consumed
  • D.less energy than has been consumed

Answer: C

If the disc turns faster than it should, the register advances too far for the energy passed and the consumer is overcharged. National regulations set limits on the error in both directions, typically a few per cent for a domestic meter.

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