Power Systems
The function of reflector is to

 reduce the speed of the neutrons.
 stop the chain reaction.
 none of above.
  bounce back most of the neutrons that escape from the fuel core.

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Power Systems
In a pressurized water reactor

  both B and C.
 the coolant water boils in the reactor core.
 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.

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Power Systems
The advantage of hydro electric power station over thermal power station is

 the operation cost of hydro electric power station is low
 the initial cost of hydro electric power station is low
 hydro electric station can be constructed at the place where the energy is required
 hydro electric power station can supply the power throughout the year

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