Power Systems
Nuclear fission means

  breaking up of nuclear of heavy atoms into nearly equal parts.
  graphite.
  combination of two light nuclei.
  moderator.

ANSWER DOWNLOAD EXAMIANS APP

Power Systems
Half life is defined as

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

ANSWER DOWNLOAD EXAMIANS APP