Physics · Nuclear Physics
What is the primary function of a moderator in a nuclear reactor during sustained nuclear fission?
- 1To absorb excess heat and cool down the reactor core
- 2To slow down fast-moving neutrons to thermal energies to maintain the chain reaction✓
- 3To directly absorb neutrons to completely stop the nuclear reaction rate
- 4To rotate the main turbine assembly to generate electricity
Correct answer
To slow down fast-moving neutrons to thermal energies to maintain the chain reaction
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