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The creep test of an energy meter is carried out with

  • A.rated voltage applied and no current in the series magnet
  • B.rated current in the series magnet and no voltage on the pressure coil
  • C.both circuits energised at five per cent of their rated values
  • D.the disc removed so that the torques may be measured directly

Answer: A

Creeping is a torque that exists in the absence of load current, so the test applies voltage alone and watches the disc. Standards allow the disc no more than one complete revolution in a stated period under this condition.

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