Power Plant Engineering
A moderator, in nuclear power plants, is a medium introduced into the fuel mass in order to

Control the reaction
Slow down the speed of fast moving neutrons
Reduce the temperature
Extracts heat from nuclear reaction

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Power Plant Engineering
Enriched uranium is one in which

Percentage of U₂₃₄ has been artificially increased
Percentage of U has been artificially increased
Percentage of U₂₃₅ has been artificially increased
Extra energy is pumped from outside

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Power Plant Engineering
Natural uranium is made up of

99.282% U₂₃₅, 0.712% U₂₃₄, 0.006% U₂₃₈
99.282% U₂₃₅, 0.712% U₂₃₈, 0.06%' U₂₃₄
99.282% U₂₃₈, 0.712% U₂₃₅, 0.006% U₂₃₄
99.282% U₂₃₄, 0.712% U₂₃₈, 0.006% U₂₃₅

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