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Power Systems

Power Systems
For large plants of capacity for more than 15 MW, what type of cooling is used

  Water.
  Liquid.
  Air.
  Hydrogen.

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Power Systems
If the rated receiving end voltage is 33 kV, then what are the limits for safe operation of equipments?

 31.35 to 34.65 kV
 25 to 35 kV
 any voltage above 33 kV
 33 to 50 kV

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Power Systems
The function of draft tube is reaction turbine is to

  convert kinetic energy of water.
 reduce water hammer.
 increase flow rate of water.
 all of above.

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Power Systems
Reflector of a nuclear reactor are made up of

  boron.
  beryllium.
 cast iron.
 steel.

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Power Systems
What is the function of economiser in steam boilers

 cooling
 collect ash particals
All of these
 improving thermal efficiency

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Power Systems
Frequencies must be same in which of the following line to exchange the power from one place to other place ?

 No need of same frequency for exchange of power
 Asynchronous line
 Synchronous line
 both 1 and 2

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