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Nuclear Power Engineering

Nuclear Power Engineering
Which of the following radiations is the least penetrating?

X-rays
β-rays
γ-rays
α-rays

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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?

2537
10000
159
1837

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Nuclear Power Engineering
Fast breeder nuclear reactors using enriched uranium as fuel may contain upto a maximum of __________ percent of U-235 (i.e. fissile material).

45
85
65
15

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Nuclear Power Engineering
Unit of radioactivity is

Angstrom
Fermi
Barn
Curie

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Nuclear Power Engineering
Heavy water has maximum density at __________ °C.

11.6
18.6
4

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

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

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