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Nuclear Power Engineering

Nuclear Power Engineering
Coolant used in a boiling water reactor is

Water
Hydrogen gas
Steam
A mixture of water & steam

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Nuclear Power Engineering
The amount of a radioisotope remaining undecayed after a time equal to four times its half life, will be __________ percent.

12.5
25
3.125
6.25

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Nuclear Power Engineering
Research reactors are normally meant for

None of these
Accelerating the neutrons
Producing high neutron flux 10¹²-10¹³ neutrons/cm², sec and studying the effect of neutron bombardment on dif ferent materials
Power generation

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Nuclear Power Engineering
Moderating material used in a thermal-reactor should be a

Good absorber of neutrons
Solid substance
None of these
Poor absorber of neutrons

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Nuclear Power Engineering
The half life period of a radiactive element is 100 days. After 400 days, one gm of the element will be reduced to __________ gm.

43834
43832
43846
43838

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Nuclear Power Engineering
U-235 content in enriched uranium, that is normally used in power reactors (e.g., at Tarapur atomic power plant), is about __________ percent.

85
3
97
50

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