Power Systems
IF the time of operation of a relay for unity TMS is 10 sec then the time of operation for 0.5 TMS is

 20 sec.
 none of these.
 10 sec.
  5 sec.

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Power Systems
Gross head of an hydroelectric power station is

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

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Power Systems
The power level of nuclear reactor can be increase by ( K = multiplication factor )

 lowering the value of K below and keeping at that lowered value.
  raising the value of K above 1, but later bringing it back to K = 1.
 lowering the value of K below 1 but later bringing it back to K = 1.
 raising the value of K above 1 and keeping it at raised value.

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