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.Management Sciences
Category: Nuclear Power Plants
A fast breeder reactor uses following as fuel_________________?
A. enriched uranium
B. plutonium
C. thorium
D. U235
E. natrual uranium
Boiling water reactor uses the following as moderator, coolant and working fluid________________?
A. ordinary fluid
B. heavy water
C. molten lead
D. hydrogen gas
E. none of the above
Ideally the neutron flux in reactor should be__________________ ?
A. maximum in center and zero at side
B. maximum at side and zero in center
C. uniform throughout
D. zero throughout
E. none of the above
Enriched uranium is one in which__________________?
A. %age of U235 has been artificially in-creased
B. %age of U has been artificially increased
C. %age of U234 has been artificially in-creased
D. extra energy is pumped from outside
E. all impurities have been removed
Ferrite material is____________________?
A. the most fissionable material
B. the basic fuel for nuclear paints
C. basic raw material for nuclear plants
D. the material which absorbs neutrons and undergoes spontaneous changes leading to the formation of fissionable material
E. none of the above
The coolant used in boiling water reactor is________________?
A. Co2
B. pressurised water
C. mixture of water and steam
D. liquid metal
E. mercury
A nuclear unit becoming critical means_______________?
A. it is generating power to rated capacity
B. it is capable of generating much more than rated capacity
C. there is danger of nuclear spread
D. chain reaction that causes automatic splitting of the fuel nuclei has been established
E. it generates no heat
Which of the following are ferrite materials__________________?
A. U233andPu239
B. U
C. U238andPu239
D. U238andTh239
E. none of the above
Reactors designed for propulsion applications are designed for_______________?
A. natural uranium
B. enriched uranium
C. pure uranium
D. any type of uranium
E. none of the above
Hydrogen is preferred as better coolant in comparison to C02 because former_____________________?
A. is lighter
B. is inert
C. has high specific heat
D. is a good conductor
E. all of the above
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