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Nuclear Power Engineering

Nuclear Power Engineering
The atomic number of an element is equal to the number of __________ present in its atom.

Electrons
Neutrons
Protons
Either B or C

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

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

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Nuclear Power Engineering
Enriched uranium means that, it contains

More than 0.71% of U-235
Only fertile material
Only fissile material
No impurities

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Nuclear Power Engineering
The atomic number of a radioactive element is not changed, when it emits __________ rays.

β
α
γ
α & β

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Nuclear Power Engineering
The critical mass of a fissionable material can be reduced by

Surrounding it by neutron reflecting material
Surrounding it by neutron absorbing material
Cooling it
Heating it

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Nuclear Power Engineering
A thermal nuclear reactor compared to a fast breeder reactor

Gives higher power density
Uses slower neutrons for fission
Requires less fuel to run at the same power level
Uses faster neutrons for fission

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