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Nuclear Power Engineering

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

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

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Nuclear Power Engineering
The disintegration rate of a radioactive element

Remains constant throughout
Progressively increases
Progressively decreases
May increase or decrease depending on the material

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Nuclear Power Engineering
Use of molten metal as a coolant in fast breeder reactor helps in

Accelerating the neutrons
Breeding neutrons
Accelerating the reaction rate in the core
Rapid heat transfer from the core

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Nuclear Power Engineering
Radioactivity of an isotope is expressed in

Curie
MeV
Ergs
Barn

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Nuclear Power Engineering
Percentage of the heavy water in ordi water is around

7.54
0.71
32.97
0.015

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Nuclear Power Engineering
The atomic mass of an element is fractional, because

Of uncertainty principle
It may have isobars
It contains neutrons
It may have isotopes

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