Power Systems
The conversion ratio of a breeder reactor is

 none of above.
  equal to unity.
  more than unity.
 less than unity.

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Power Systems
Half life is defined as

 none of above.
  the time required for one half of isotope to decay.
 the time required to spiliting of a heavy nucleus.
 the time required for full of atoms in a specimen disintegrate.

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Power Systems
In boiler water reactor (BWR)

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

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