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Nuclear Power Plants - Interview Questions and Answers

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11. The commonly used material for shielding is
A. lead or concrete
B. lead and tin
C. graphite or cadmium
D. thick galvanized sheets
E. black carbon papers.
Explanation:
12. 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
E. it generates no heat.
Explanation:
13. The number of isotopes of hydrogen are
A. 1
B. 2
C. U
D. 3
E. 0
Explanation:
14. Ferrite material is
A. the most fissionable material
B. the basic fuel for nuclear paints
C. basic raw material for nuclear plants
D. the material which absorbs neutrons and undergoes spontaneous changes leading to the formation of fissionable material
E. none of the above.
Explanation:
15. The total energy released in fission of U is
A. 5 MeV
B. 10 MeV
C. 199 MeV
D. 168 MeV
E. 11 MeV.
Explanation:
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