Power Plant Engineering
In fast breeder reactors

Graphite is used as the moderator
Any type of moderator can be used
Heavy water is used as the moderator
Moderator is dispensed with

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Power Plant Engineering
Ferrite material is

The material which absorbs neutrons and undergoes spontaneous changes leading to the formation of fissionable material
The basic fuel for nuclear paints
Basic raw material for nuclear plants
The most fissionable material

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Power Plant Engineering
A nuclear unit becoming critical means

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

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