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Total Questions : 807 | Page 73 of 81 pages
Question 721. 4. The function of control rods in nuclear plants is to
  1.    Control temperature
  2.    Control readioactive pollution
  3.    Control absorption of neutron
  4.    Control fuel consumption
 Discuss Question
Answer: Option C. -> Control absorption of neutron
Question 722. 3. Reactors for propulsion applications use
  1.    Natural uranium
  2.    Molten lead
  3.    Any form of uranium
  4.    Thorium
 Discuss Question
Answer: Option B. -> Molten lead
Question 723. 5. Breeder reactors employ liquid metal coolant because it
  1.    Acts as good moderator
  2.    Produces maximum steam
  3.    Transfers heat from core at a fast rate
  4.    Breeds neutrons
 Discuss Question
Answer: Option C. -> Transfers heat from core at a fast rate
Question 724. 8. When a reactor becomes critical, then the production of neutrons is
  1.    Infinite
  2.    Zero
  3.    Exactly balanced by the loss of neutrons through leakage
  4.    Initiated
 Discuss Question
Answer: Option C. -> Exactly balanced by the loss of neutrons through leakage
Question 725. 6. In triggering fission, which type of neutrons are more effective
  1.    Fast
  2.    Slow
  3.    In bulk
  4.    Static
 Discuss Question
Answer: Option B. -> Slow
Question 726. 7. The size of the reactor is said to be critical when
  1.    Chain reaction can be initiated
  2.    It becomes uncontrollable
  3.    It explodes
  4.    It produces no power
 Discuss Question
Answer: Option A. -> Chain reaction can be initiated
Question 727. 2. Supertheated steam is generated in following reactor
  1.    Boiling water
  2.    Gas cooled
  3.    Pressurised water
  4.    All of the above
 Discuss Question
Answer: Option B. -> Gas cooled
Question 728. 1. Reactors designed for propulsion applications are designed for
  1.    Natural uranium
  2.    Enriched uranium
  3.    Pure uranium
  4.    Any type of uranium
 Discuss Question
Answer: Option B. -> Enriched uranium
Question 729. 0. The energy produced by a thermal reactor of same size as a breeder reactor is
  1.    Almost same
  2.    Slightly more
  3.    Slightly less
  4.    Much less
 Discuss Question
Answer: Option D. -> Much less
Question 730. 9. In the breeder reactors the generation of new fissionable atom is
  1.    At the lower rate than the consumption
  2.    At a higher rate than the constuption
  3.    At an equal rate of the consumption
  4.    Depends on other considerations
 Discuss Question
Answer: Option B. -> At a higher rate than the constuption

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