Power Systems
For variable heads of near about but less than 30 meters, which type of turbine is used in hydro power station?

 Francis
 Pelton
None of these
 Kaplan

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Power Systems
Which of following statement are false

 A thermal reactor needs a moderator material.
 In nuclear power plants, chain reaction is controlled by cadmium rods.
 In a nuclear reactor, multiplication factor is kept almost equal to one.
  Nuclear power plants are used as peak load plants only.

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Power Systems
In a pressurized water reactor

 water is used at high pressure so that it is available is liquid from at about 280° C.
 heavy water is used as both coolant and moderator.
  both B and C.
 the coolant water boils in the reactor core.

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