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Nuclear Power Engineering

Nuclear Power Engineering
The phenomenon of nuclear fission is opposite to that of

Thermionic emission
Combustion
Nuclear fusion
Radioactive decay

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Nuclear Power Engineering
Heat is generated in a nuclear reactor (thermal) by

Absorption of neutrons in uranium atoms
Fission of U-235 by neutrons
Combustion of a nuclear fuel e.g. uranium
Fusion of atoms of uranium

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Nuclear Power Engineering
The time taken for a radioactive element to reduce to 50% of its original weight is __________ years, if its half life period is 12 years.

18
36
24
6

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Nuclear Power Engineering
Which of the following is not a good moderating material?

Concrete
18/8 stainless steel
Boron
All of these

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Nuclear Power Engineering
Which is the most commonly used molten metal for cooling of nuclear reactors?

Zinc
Mercury
Calcium
Sodium

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Nuclear Power Engineering
Radioactive decay is a __________ change.

Physical
Nuclear
Chemical
None of these

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