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.Management Sciences
Category: Nuclear Power Plants
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
A nuclear fission is initiated when the critical energy as compared to neutron binding energy of the atoms is_________________?
A. same
B. more
C. less
D. there is no such criterion
E. none of the above
The energy produced by a thermal reactor of same size as a breeder reactor is__________________?
A. almost same
B. slightly more
C. slightly less
D. much less
E. much more.
Solid- fuel for nuclear reactions may be fabricated into various small shapes such as___________________?
A. plates
B. pallets
C. pins
D. any one of the above
E. none of the above
The total energy released in fission of U is__________________?
A. 5 MeV
B. 10 MeV
C. 199 MeV
D. 168 MeV
E. 11 MeV
In the breeder reactors the generation of new fissionable atom is_________________?
A. at the lower rate than the consumption
B. at a higher rate than the constuption
C. at an equal rate of the consumption
D. depends on other considerations
E. unpredictable
Which of the following particles is the lightest__________________?
A. nucleus
B. electron
C. proton
D. meson
E. neutron
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