The size of the reactor is said to be critical when

A Chain reaction can be initiated
B It becomes uncontrollable
C It explodes
D It produces no power

Correct Answer: Chain reaction can be initiated

When the atom-splitting reactor of a nuclear power plant is operating normally, it is said to be “critical” or in a state of “criticality.”
Criticality means that a reactor is controlling a sustained fission chain reaction, where each fission event releases a sufficient number of neutrons to maintain an ongoing series of reactions. This is the normal state of nuclear power generation.
Bissoy MCQ
#Mechanical Engineering #Power Plant Engineering

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