Power Plant Engineering(Engineering > Mechanical Engineering ) Questions and Answers

Question 1. Each fission of u₂₃₅ produces following number of fast neutrons per fission
  1.     1 neutron
  2.     3 neutrons
  3.     1, 2 neutrons
  4.     2 neutrons
Explanation:-
Answer: Option D. ->  2 neutrons
Explanation :
Question 2. U233 is produced
  1.     As basic raw material
  2.     By neutron irradiation of Uz
  3.     By neutron irradiation of thorium
  4.     Artificially
Explanation:-
Answer: Option C. ->  By neutron irradiation of thorium
Explanation :
Question 3. U233 is produced
  1.     As basic raw material
  2.     By neutron irradiation of Uz
  3.     By neutron irradiation of thorium
  4.     Artificially
Explanation:-
Answer: Option C. ->  By neutron irradiation of thorium
Explanation :
Question 4. Plutonium (pu239) is produced
  1.     Artificially
  2.     When U238 is irradiated by neutrons
  3.     By fission of Th232
  4.     As basic raw material
Explanation:-
Answer: Option B. ->  When U238 is irradiated by neutrons
Explanation :
Question 5. U₂₃₃ is produced
  1.     Artificially
  2.     As basic raw material
  3.     When thorium is irradiated by neutrons
  4.     By fission of U₂₃₈
Explanation:-
Answer: Option C. ->  When thorium is irradiated by neutrons
Explanation :
Question 6. Which of the following nuclear reactor does not need a heat exchanger for generation of steam?
  1.     Gas cooled
  2.     Liquid metal cooled
  3.     Pressurised water
  4.     Boiling water
Explanation:-
Answer: Option D. ->  Boiling water
Explanation :
Question 7. U235 will undergo fission by
  1.     High energy (fast) neutrons alone
  2.     Low energy (slow) neutrons alone
  3.     Either fast or slow neutrons
  4.     Medium energy neutrons
Explanation:-
Answer: Option C. ->  Either fast or slow neutrons
Explanation :
Question 8. U238 will undergo fission by
  1.     High energy (fast) neutrons alone
  2.     Low energy (slow) neutrons alone
  3.     Either fast or slow neutrons
  4.     Medium energy neutrons
Explanation:-
Answer: Option A. ->  High energy (fast) neutrons alone
Explanation :
Question 9. U238 will undergo fission by
  1.     High energy (fast) neutrons alone
  2.     Low energy (slow) neutrons alone
  3.     Either fast or slow neutrons
  4.     Medium energy neutrons
Explanation:-
Answer: Option A. ->  High energy (fast) neutrons alone
Explanation :
Question 10. U235 will undergo fission by
  1.     High energy (fast) neutrons alone
  2.     Low energy (slow) neutrons alone
  3.     Either fast or slow neutrons
  4.     Medium energy neutrons
Explanation:-
Answer: Option C. ->  Either fast or slow neutrons
Explanation :
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