A nuclear reactor is said to be critical when the neutron population in the reactor core is

A. Rapidly increasing leading to the point of explosion

B. Decreasing from the specified value

C. Reduced to zero

D. Constant

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  1. A moderator, apart from its high neutron slowing power, and low non-productive neutron, should be
  2. In boiling water reactor, moderator is
  3. Breeder reactor has a conversion ratio of
  4. The fast breeder reactor uses the following moderator
  5. The following present serious difficulty in designing reactor shield
  6. The secondary fuel used in nuclear power plants is
  7. The energy released during the fission of one atom of Uranium 235 in million electron volts is about
  8. Which is not identical for an atom and an isotope?
  9. The predominant isotope of the naturally occuring element is
  10. The nuclear energy is measured as
  11. Which of the following is the primary fuel?
  12. U₂₃₃ is produced
  13. A boiling water reactor uses following as fuel
  14. Natural uranium is made up of
  15. The most practical fuel for a thermonuclear reactor, both from economical and nuclear consideration…
  16. Artificial radioactive isotopes find application in
  17. Half life of a radioactive isotope corresponds to the time required for half of the following to decay
  18. Which of the following statement is correct regarding the features of a Breeder reactor?
  19. The main interest of shielding in nuclear reactor is protection against
  20. When a reactor becomes critical, then the production of neutrons is
  21. The nuclear radiators produced in a reactor which must be shielded are
  22. The commonly used material for shielding is
  23. A moderator, in nuclear power plants, is a medium introduced into the fuel mass in order to
  24. U235 will undergo fission by
  25. A fission chain reaction in uranium can be developed by
  26. A moderator
  27. The coolant used in boiling water reactor is
  28. The efficiency of a nuclear power plant in comparison to a conventional thermal power plant is
  29. Which of the following are ferrite materials?
  30. In order to have constant chain reaction to produce a constant rate of heat output, the value of ratio…