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Power Plant Engineering

Power Plant Engineering
Enriched uranium may contain fissionable contents of the order of

1-25%
1-99%
1-50%
1-75%

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Power Plant Engineering
Plutonium (Pu239) is produced

As basic raw material
By fission of Th232
Artificially
When U238 is irradiated by neutrons

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Power Plant Engineering
Enriched uranium is required as a fuel in a nuclear reactor, if light water is used as moderator and coolant, because light water has

High neutron absorption cross-section
Low moderating efficiency
High neutron scatter cross-section
Low neutron absorption cross-section

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Power Plant Engineering
The nuclear radiators produced in a reactor which must be shielded are

Neutron and gamma rays
α, β and γ rays
Electrons
None of these

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Power Plant Engineering
A moderator generally used in nuclear power plants is

Concrete
Graphite and concrete
Graphite
Heavy water

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Power Plant Engineering
Pressurized water reactor is designed

To prevent the water coolant from boiling in the core
To use intermediate coolant
For boiling pi water in the core
To use liquid sodium metal as coolant

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