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Nuclear Power Engineering

Nuclear Power Engineering
The time required for half of the __________ of a radioactive isotope to decay is called its half life.

Nuclei
Protons
Neutrons
Electrons

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Nuclear Power Engineering
Pressure in a Pressurised Water Reactor (PWR) is used for

Maintaining constant pressure in the primary cooling circuit under varying loads
Superheating the steam
Pressurising the water in the primary coolant circuit
None of these

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

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

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Nuclear Power Engineering
Ordinary water is not used as a moderator because, it

Absorbs neutrons
Does not absorb neutrons
Has a low scattering cross-section
Has a low absorption cross-section

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Nuclear Power Engineering
The half life period of a radioactive element depends on its

Temperature
Pressure
Amount
None of these

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Nuclear Power Engineering
The radioisotope used to study the thyroid gland is

Carbon
Iron
Cobalt
Iodine

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