72) Effective moderators are those materials which contain

light weight atoms

heavy weight atoms

critical atoms

zero weight atoms

Answer is:

light weight atoms

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73) In a fission process, maximum %age of energy is released as

kinetic energy of neutrons

kinetic energy of fission products

instantaneous release of gamma rays

gradual radioactive decay of fission products

Answer is:

kinetic energy of fission products

74) The following present serious difficulty in designing reactor shield

alpha particles

beta particles

thermal neutrons

fast neutrons and gamma rays

Answer is:

fast neutrons and gamma rays

75) In nuclear fission

the original elements change into completely different elements

the electrons of the element change

the molecules rearrange themselves to form other molecules

none of the above.

Answer is:

the original elements change into completely different elements

76) In order to have constant chain reaction to produce a constant rate of heat output, the value of ratio of the number of neutrons in one generation to the number of neutrons in the immediately preceding generation must be

greater than 1.0

less than 1.0

equal to zero

equal to 1.0

Answer is:

equal to 1.0

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72) Effective moderators are those materials which contain

light weight atoms

Nuclear Power Plants Questions with Answers

Related Nuclear Power Plants Questions with Answers

73) In a fission process, maximum %age of energy is released as

kinetic energy of fission products

74) The following present serious difficulty in designing reactor shield

fast neutrons and gamma rays

75) In nuclear fission

the original elements change into completely different elements

76) In order to have constant chain reaction to produce a constant rate of heat output, the value of ratio of the number of neutrons in one generation to the number of neutrons in the immediately preceding generation must be

equal to 1.0

Nuclear Power Plants Questions with Answers