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A maximum demand controller in a factory acts by

  • A.shedding selected loads as the demand approaches a limit
  • B.improving the power factor of the incoming supply
  • C.reducing the voltage supplied to the plant
  • D.storing energy for release during the peak

Answer: A

Non-critical loads such as an air compressor, a water heater or a battery charger are dropped for a few minutes so the recorded demand does not cross the threshold. It saves the demand charge without affecting production.

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