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Which of the following part is not present in distribution system?

  • A.Step up transformer
  • B.Feeder
  • C.Distributor
  • D.Service mains

Answer: A

A step-up transformer is not a part of the distribution system. Step-up transformers are used at the generating station to raise the voltage for transmission, while the distribution system lowers the voltage again with step-down transformers.

Feeders (which carry power from the substation to the distribution area), distributors (from which the consumers are served) and service mains (the connection to the consumer's premises) are the parts of distribution. So the first option is the answer.

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