Power Systems
If the breakdown voltage of the insulator is high, the thickness of the insulator is

 less
 high
None of these
 it does not related to breakdown voltage

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Power Systems
In boiler water reactor (BWR)

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

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