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Power Plant Engineering

Power Plant Engineering
The primary fuel used in nuclear power plants is

U₂₃₅
Pu₂₃₃
U₂₃₈
Pu₂₃₉

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Power Plant Engineering
Gas cooled reactor uses following materials as moderator, and coolant

Lead, H2
Heavy water, CO2
Graphite, air
Graphite, CO2

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Power Plant Engineering
Moderator in nuclear plants is used to

Cause collision with the fast moving neutrons to reduce their speed
Reduce temperature
Control the reaction
Extract heat from nuclear reaction

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Power Plant Engineering
The size of the reactor is said to be critical when

Chain reaction can be initiated
It explodes
It becomes uncontrollable
It produces no power

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Power Plant Engineering
In triggering fission, the following types of neutrons are desirable

Fast moving
Neutrons at rest
Slow moving
Critical neutrons

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Power Plant Engineering
A moderator, apart from its high neutron slowing power, and low non-productive neutron, should be

All of the listed here
Stable under nuclear radiation
Good thermal conductor
Corrosion resistant

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