Mechanical Engineering MCQs

Page No. 160

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


aplates

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bpallets

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cpins

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dany one of the above

✓


View Answer any one of the above

Reactors designed for propulsion applications are designed for_______________?


anatural uranium

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benriched uranium

✓


cpure uranium

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dany type of uranium

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View Answer enriched uranium

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


ainfinite

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bzero

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cexactly balanced by the loss of neutrons through leakage

✓


dinitiated

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


aat the lower rate than the consumption

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bat a higher rate than the constuption

✓


cat an equal rate of the consumption

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ddepends on other considerations

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


alight or heavy water

✓


bmolten lead

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ccarbon dioxide

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dfreon

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View Answer light or heavy water

Which of the following is the primary fuel________________?


aUlii

✖


bU

✓


cU238

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dPu:

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View Answer U

Plutonium-239 is produced__________________?


aas basic raw material

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bby neutron irradiation of IT*

✓


cby neutron irradiation of thorium

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dartificially

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Pick up the wrong statement Fast breeder reactors__________________?


aoperate at extremely high power densities.

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bare liquid-metal cooled

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cproduce more fuel than they consume

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duse water as coolant

✓


View Answer use water as coolant

The unit of radio-activity is_____________?


aelectron-volt

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belectron-ampere

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ccurie

✓


dMeV

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View Answer curie

Uranium-233 is produced__________________?


aas basic raw material

✖


bby neutron irradiation of Uz

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cby neutron irradiation of thorium

✓


dartificially

✖



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