Nuclear Power Engineering
The function of moderators in nuclear reactor is to

Absorb the secondary neutrons
Control the chain reaction
None of these
Slow down the secondary neutrons

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Nuclear Power Engineering
The main purpose of control rod in a nuclear reactor is to control the

Velocity of the secondary neutrons
Chain reaction and hence the power output by regulating the number of secondary neutrons causing fission
Conversion of fissile material into fertile material
Emission of hazardous radiation

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