Power Systems
In boiler water reactor (BWR)

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

ANSWER DOWNLOAD EXAMIANS APP

Power Systems
The draft tube is provided to

  increase the acting head on the water wheel.
 reduce the effect of water hammer.
None of these
 raise the water surface of the stream to create an artificial head.

ANSWER DOWNLOAD EXAMIANS APP