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

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  1. The predominant isotope of the naturally occuring element is
  2. In nuclear fission
  3. Where reactor operation is designed with fast neutrons such as in reactors using highly enriched fuel,…
  4. Half life of a radioactive isotope corresponds to the time required for half of the following to decay
  5. Enriched uranium is required as a fuel in a nuclear reactor, if light water is used as moderator and…
  6. The energy required to be applied to a radioactive nucleus for the emission of a neutron is
  7. The breeding gain in case of thermal breeder reactor as compared to fast breeder reactor is
  8. A moderator, in nuclear power plants, is a medium introduced into the fuel mass in order to
  9. In triggering fission, the following types of neutrons are desirable
  10. Which of the following is the primary fuel?
  11. Boiling water reactor uses the following as moderator, coolant and working fluid
  12. A pressurised water reactor employs pressurises for the following application
  13. A nuclear fission is initiated when the critical energy as compared to neutron binding energy of the…
  14. The following present serious difficulty in designing reactor shield
  15. Reactors for propulsion applications are designed for
  16. Which of the following can be used as a coolant in nuclear plant?
  17. U233 is produced
  18. The most practical fuel for a thermonuclear reactor, both from economical and nuclear consideration…
  19. A nuclear reactor is said to be critical when the neutron population in the reactor core is
  20. The secondary fuel used in nuclear power plants is
  21. Each fission of U₂₃₅ produces on the average _________ fast neutrons as a product…
  22. The efficiency of a nuclear power plant in comparison to conventional and nuclear consideration is
  23. Ideally the neutron flux in reactor should be
  24. The energy released during the fission of one atom of Uranium 235 in million electron volts is about
  25. Moderator in nuclear plants is used to
  26. A nuclear unit becoming critical means
  27. Electron volt is the unit of
  28. Boiling water reactor employs
  29. In natural uranium, the constituents of three naturally occuring isotopes are
  30. Pressurised water reactor is designed