Power Plant Engineering
Which of the following statement is correct regarding the features of a Breeder reactor ?

It produces more fuel than it consumes
All of these
It requires liquid sodium metal as moderator
It requires highly enriched fuel

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Power Plant Engineering
A nuclear unit becoming critical means

Chain reaction that causes automatic splitting of the fuel nuclei has been established
It is generating power to rated capacity
There is danger of nuclear spread
It is capable of generating much more than rated capacity

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Power Plant Engineering
In natural uranium, the constituents of three naturally occurring isotopes are

U₂₃₄ = 0.712%, U₂₃₅ = 0.006% and U₂₃₈ = 99.282%
U₂₃₄ = 99.282%, U₂₃₅ = 0.006% and U₂₃₈ = 0.712%
U₂₃₄ = 0.006%, U₂₃₅ = 99.282% and U₂₃₈ = 0.712%
U₂₃₄ = 0.006%, U₂₃₅ = 0.712% and U₂₃₈ = 99.282%

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