Power Plant Engineering
When a reactor becomes critical, then the production of neutrons is

Infinite
Zero
Exactly balanced by the loss of neutrons through leakage
Initiated

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Power Plant Engineering
Pick up the wrong statement

Slow or thermal neutrons have energy of the order or 0.025 eV
In a heterogeneous or solid fuel reactor, the fuel is mixed in a regular pattern within moderator
Fast reactor uses moderator
Fast neutrons have energies above 1000 eV

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