Nuclear Power Plants Model Online Quiz Questions Test4

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1. Which of the following are ferrite materials
U233andPu239	U
U238andPu239	U238andTh239

2. Ferrite material is ______.
the most fissionable material	the basic fuel for nuclear paints
basic raw material for nuclear plants	the material which absorbs neutrons and undergoes spontaneous changes leading to the formation of fissionable material

3. Enriched uranium is one in which
%age of U235 has been artificially increased	%age of U has been artificially increased
%age of U234 has been artificially increased	extra energy is pumped from outside

4. Which of the following particles is the lightest
nucleus	electron
proton	meson

5. Which of the following is the heaviest
neutron	proton
atom	electron

6. In fast breeder reactors
any type of moderator can be used	graphite is used as the moderator
heavy water is used as the moderator	moderator is dispensed with

7. In nculear fission each neutron that causes fission releases
no new neutron	at least one new neutron
one new neutron	more than one new neutrons

8. The breeding gain in case of thermal breeder reactor as compared to fast breeder reactor is _____.
same	lower
higher	unity

9. Gas cooled reactor uses following materials as moderator, and coolant
graphite, C02	graphite, air
heavy water, C02	lead, H2

10. A nuclear fission produces energy of following order in MeV
20	200
2000	20,000

11. The process by which a heavy nucleus is splitted into two light nuclei is known as ______.
splitting	fission
fusion	disintegration

12. A nuclear fission is initiated when the critical energy as compared to neutron binding energy of the atoms is _____.
same	more
less	there is no such criterion

13. The fast breeder reactor uses the following moderator
demineralised water	carbon dioxide
heavy water	no moderator is used

14. The first unclear power plant in India is located at _____.
Kota	Kalapakkam
Tarapur	Baraeilly

15. The nuclear power plant at Tarapur has the following reactor
fast breeder	pressurised water
boiling water	sodium graphite

16. Boiling water reactor uses the following as moderator, coolant and working fluid
ordinary fluid	heavy water
molten lead	hydrogen gas

17. Ideally the neutron flux in reactor should be
maximum in centre and zero at side	maximum at side and zero in centre
uniform throughout	zero throughout

18. Enriched uranium may contain fissionable contents of the order of ______.
1-99%	1-25%
1-50%	1-75%

19. U235 will undergo fission by ______.
high energy (fast) neutrons alone	low energy (slow) neutrons alone
either fast or slow neutrons	medium energy neutrons

20. U238 will undergo fission by _____.
high energy (fast) neutrons alone	low energy (slow) neutrons alone
either fast or slow neutrons	medium energy neutrons