Related Questions

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 plants is
A Heavy water
B Concrete and bricks
C Graphite and concrete
D Graphite
The most commonly used moderator in nuclear power plant is
A Graphite
B Light water
C Heavy water
D Berellium
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
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
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

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