The most commonly used moderator in nuclear plants is

Heavy water is used as a moderator in a nuclear reactor. The function of the moderator is

A

to control the energy released in the reactor

B

to absorb neutrons and stop the chain reaction

C

to cool the reactor

D

to slow down the neutrons to thermal energy

The most commonly used moderator in nuclear power plants is

A

Graphite

B

Light water

C

Heavy water

D

Berellium

The most commonly used moderator in nuclear power plant is

A

Graphite

B

Light water

C

Heavy water

D

Berellium

Moderator in nuclear plants is used to

A

Reduce temperature

B

Extract heat from nuclear reaction

C

Control the reaction

D

Cause collision with the fast moving neutrons to reduce their speed

A moderator generally used in nuclear power plants is

A

Graphite

B

Heavy water

C

Concrete

D

Graphite and concrete

A moderator, in nuclear power plants, is a medium introduced into the fuel mass in order to

A

Slow down the speed of fast moving neutrons

B

Control the reaction

C

Reduce the temperature

D

Extracts heat from nuclear reaction

Which of the following is used as a moderator in nuclear reactor?

A

Thorium

B

Graphite

C

Radium

D

Ordinary water

Enriched uranium is required as a fuel in a nuclear reactor, if light water is used as moderator and coolant, because light water has

A

High neutron absorption cross-section

B

Low moderating efficiency

C

High neutron scatter cross-section

D

Low neutron absorption cross-section

Which set of materials is used as a moderator in nuclear reactor?

A

Zircalloy & berrylium

B

Zircalloy & heavy water

C

Zirconium & berrylium

D

Heavy water & berrylium

Which of the following is not used as a moderator in nuclear reactor?

A

Molten sodium

B

Light water

C

Beryllium

D

Boron hydride

The most commonly used moderator in nuclear plants is

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