Mechanical Engineering MCQs

Page No. 161

Plutonium is produced________________?


aas basic raw material

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bby neutron irradiation of Uz

✓


cby neutron irradiation of throium

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dartificially

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Natural uranium is made up of__________________?


a99.282% U238, 0.712% U235, 0.006% U234

✓


b99.282% U235, 0.712% U238, 0.06%’ U234

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c99.282% U234, 0.712% U238, 0.006% U235

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d99.282% U235, 0.712% U234, 0.006% U238

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Enriched uranium may contain fissionable contents of the order of__________________?


a1-99%

✓


b1-25%

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c1-50%

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d1-75%

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View Answer 1-99%

A reactor capable of converting a ferrite material into fissile isotopes is called____________________?


aregenerative reactor

✓


bfast breeder reactor

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cbreeder reactor

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dboiling water reactor

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View Answer regenerative reactor

Electron-volt is the unit of________________?


aatomic power

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benergy

✓


cvoltage

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dradio activity

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View Answer energy

The risk of radioactive hazard is greatest in the turbine with following reactor___________________?


apressurised water

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bboiling water

✓


cgas cooled

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dliquid metal cooled

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View Answer boiling water

Hydrogen is preferred as better coolant in comparison to C02 because former_____________________?


ais lighter

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bis inert

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chas high specific heat

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dis a good conductor

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U235 will undergo fission by__________________?


ahigh energy (fast) neutrons alone

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blow energy (slow) neutrons alone

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ceither fast or slow neutrons

✓


dmedium energy neutrons

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The first unclear power plant in India is located at____________________?


aKota

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bKalapakkam

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cTarapur

✓


dBaraeilly

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View Answer Tarapur

Boiling water reactor uses the following as moderator, coolant and working fluid________________?


aordinary fluid

✓


bheavy water

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cmolten lead

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dhydrogen gas

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View Answer ordinary fluid

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