Power Systems
The power output of a nuclear power station is proportional to

 square of the rate at which fission reaction occurs.
  the rate at which fission reaction occurs.
 square root of the rate at which fission reaction occurs.
 none of above.

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Power Systems
Half life is defined as

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

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