Power Systems
Gross head of an hydroelectric power station is

 the height of water level in the river where the tail race is provided.
 all of above.
 the height of water level in the river where the storage is provided.
  the difference of water level between the level in storage and tail race.

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Power Systems
Which of the following statements is true? Corona loss increases with

 decrease in conductor size and decrease in supply frequency
 increase in conductor size and increase in supply frequency
 decrease in conductor size and increase in supply frequency
 increase in conductor size and decrease in supply frequency

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Power Systems
In boiler water reactor (BWR)

 enriched uranium is used as fuel.
 the feed water acts both coolant and a moderator.
  all of above.
 there is danger of radioactive contamination of steam.

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