Exam preparation MCQs with answers

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A nuclear unit becoming critical means_______________?
  • (A)  it is generating power to rated capacity
  • (B)  it is capable of generating much more than rated capacity
  • (C)  there is danger of nuclear spread
  • (D)  chain reaction that causes automatic splitting of the fuel nuclei has been established
  • (E)  it generates no heat
Enriched uranium is one in which__________________?
  • (A)  %age of U235 has been artificially in-creased
  • (B)  %age of U has been artificially increased
  • (C)  %age of U234 has been artificially in-creased
  • (D)  extra energy is pumped from outside
  • (E)  all impurities have been removed