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


binfra-red rays


ca, P, and y rays


dneutrons and gamma rays



The most commonly used moderator in nuclear plants is___________________?


aheavy water


bconcrete and bricks


cgraphite and concrete


dgraphite


View Answer graphite

Moderator in nuclear plants is used to__________________?


areduce temperature


bextract heat from nuclear reaction


ccontrol the reaction


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


ddifferent chemical properties and same atomic numbers



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


bliquid metal cooled


cpressurised water


dboiling water


View Answer boiling water

Fast breeder reactor uses___________________?


aboiler


bdirect cycle of coolant system


cdouble circuit system of coolant cycle


dmulti pass system



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