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Nuclear Power Engineering

Nuclear Power Engineering
The sum of masses of two nuclei produced in nuclear fission compared to the mass of original nucleus is

Same
Much more
Less
More

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Nuclear Power Engineering
The ratio of mass of a neutron to that of an electron is about 1839. What is the ratio of the mass of a proton to that of an electron?

159
2537
10000
1837

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Nuclear Power Engineering
The emission of an a-particle causes the resultant nucleus to have

None of these
More atomic weight and less atomic number
Less atomic weight and less atomic number
Less atomic weight and more atomic number

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Nuclear Power Engineering
The function of moderators in nuclear reactor is to

Absorb the secondary neutrons
Slow down the secondary neutrons
Control the chain reaction
None of these

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Nuclear Power Engineering
75% of a radioactive element decays in 6 hours. Its half life period is __________ hours.

43836
4
43894
3

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Nuclear Power Engineering
Heavy water is used as a moderator in a

Boiling water reactor (BWR)
Molten sodium cooled reactor
Candu reactor
Pressurised water reactor (PWR)

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