Mechanical Engineering MCQs

Page No. 162

U238 will undergo fission by_________________?


ahigh energy (fast) neutrons alone


blow energy (slow) neutrons alone


ceither fast or slow neutrons


dmedium energy neutrons



Ideally the neutron flux in reactor should be__________________ ?


amaximum in center and zero at side


bmaximum at side and zero in center


cuniform throughout


dzero throughout


View Answer uniform throughout

The nuclear power plant at Tarapur has the following reactor________________?


afast breeder


bpressurised water


cboiling water


dsodium graphite


View Answer boiling water

The number of isotopes of hydrogen are _________________?


a1


b2


cU


d3


View Answer 3

Reflector in nuclear plants is used to________________?


areturn the neutrons back into the core


bshield the radioactivity completely


ccheck polllution


dconserve energy



The commonly used material for shielding is__________________?


alead or concrete


blead and tin


cgraphite or cadmium


dthick galvanised sheets


View Answer lead or concrete

The energy required to be applied to a radioactive nucleus for the emission of a neutron is________________?


a1 MeV


b2.4 MeV


c4.3 MeV


d7.8 MeV


View Answer 7.8 MeV

Ferrite material is____________________?


athe most fissionable material


bthe basic fuel for nuclear paints


cbasic raw material for nuclear plants


dthe material which absorbs neutrons and undergoes spontaneous changes leading to the formation of fissionable material



In fast breeder reactors___________________?


aany type of moderator can be used


bgraphite is used as the moderator


cheavy water is used as the moderator


dmoderator is dispensed with



Which of the following particles is the lightest__________________?


anucleus


belectron


cproton


dmeson


View Answer electron

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