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Which part of the hydroelectric power plant overcomes the abnormal pressure in the conduit when load on the turbine falls and acts as a reservoir during increase of load on the turbine?

  • A.Penstock
  • B.Dam
  • C.Surge tank
  • D.Spillway

Answer: C

The surge tank is the part of a hydroelectric power plant that overcomes the abnormal pressure in the conduit when the load on the turbine falls and acts as a reservoir when the load increases. When the gates close suddenly, the water hammer is absorbed by the rise of water in the tank, and when the load rises it supplies the extra water at once.

The penstock is the pipe that carries water to the turbine, the dam stores water, and the spillway passes the surplus water. So the third option is the answer.

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