Mechanical Engineering MCQs

Page No. 160

Solid- fuel for nuclear reactions may be fabricated into various small shapes such as___________________?


aplates


bpallets


cpins


dany one of the above


View Answer any one of the above

Reactors designed for propulsion applications are designed for_______________?


anatural uranium


benriched uranium


cpure uranium


dany type of uranium


View Answer enriched uranium

When a reactor becomes critical, then the production of neutrons is_________________?


ainfinite


bzero


cexactly balanced by the loss of neutrons through leakage


dinitiated



In the breeder reactors the generation of new fissionable atom is_________________?


aat the lower rate than the consumption


bat a higher rate than the constuption


cat an equal rate of the consumption


ddepends on other considerations



Which of the following can be used as a coolant in nuclear plant________________?


alight or heavy water


bmolten lead


ccarbon dioxide


dfreon


View Answer light or heavy water

Which of the following is the primary fuel________________?


aUlii


bU


cU238


dPu:


View Answer U

Plutonium-239 is produced__________________?


aas basic raw material


bby neutron irradiation of IT*


cby neutron irradiation of thorium


dartificially



Pick up the wrong statement Fast breeder reactors__________________?


aoperate at extremely high power densities.


bare liquid-metal cooled


cproduce more fuel than they consume


duse water as coolant


View Answer use water as coolant

The unit of radio-activity is_____________?


aelectron-volt


belectron-ampere


ccurie


dMeV


View Answer curie

Uranium-233 is produced__________________?


aas basic raw material


bby neutron irradiation of Uz


cby neutron irradiation of thorium


dartificially



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