Mechanical Engineering MCQs

Page No. 164

Which of the following are ferrite materials__________________?


aU233andPu239

✖


bU

✓


cU238andPu239

✖


dU238andTh239

✖


View Answer U

The main interest of shielding in nuclear reactor is protection against_______________?


aX-rays

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binfra-red rays

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ca, P, and y rays

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dneutrons and gamma rays

✓



The most commonly used moderator in nuclear plants is___________________?


aheavy water

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bconcrete and bricks

✖


cgraphite and concrete

✖


dgraphite

✓


View Answer graphite

Moderator in nuclear plants is used to__________________?


areduce temperature

✖


bextract heat from nuclear reaction

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ccontrol the reaction

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dcause collision with the fast moving neutrons to reduce their speed

✓



The nuclear energy is measured as__________________?


aMeV

✓


bcurie

✖


cfarads

✖


dMW

✖


View Answer MeV

Amongst the following, the fissionable materials are________________?


aU233andPu239

✓


bU23iandPu233

✖


cU235andPu235

✖


dU238andPu239

✖


View Answer U233andPu239

Isotopes of same elements have___________________?


asame atomic number and different masses

✖


bsame chemical properties but different atomic numbers

✓


cdifferent masses and different atomic numbers

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ddifferent chemical properties and same atomic numbers

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The efficiency of a nuclear power plant in comparsion to a conventional thermal power plant is________________?


asame

✖


bmore

✖


cless

✓


dmay be less or mote depending on size

✖


View Answer less

Which of the following nuclear reactor does not need a heat exchanger for generation of steam____________________?


agas cooled

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bliquid metal cooled

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cpressurised water

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dboiling water

✓


View Answer boiling water

Fast breeder reactor uses___________________?


aboiler

✖


bdirect cycle of coolant system

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cdouble circuit system of coolant cycle

✓


dmulti pass system

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