Mechanical Engineering MCQs

Page No. 158

Each fission of U235 produces following number of fast neutrons per fission________________?


a1 neutron


b1 — neutrons


c1 – 2 neutrons


d2 — neutrons


View Answer 2 — neutrons

A fast breeder reactor__________________?


auses graphite rods as moderator


bhas powerful moderator


chas no moderator


duses ferrite material as moderator


View Answer has no moderator

A fast breeder reactor uses following as fuel_________________?


aenriched uranium


bplutonium


cthorium


dU235


View Answer U235

Artificial radioactive isotopes find application in________________?


apower generation


bnucleonic devices


cnuclear fission


dmedical field


View Answer medical field

Half life of a radioactive isotope corresponds to the time required for half of the following to decay__________________?


aelectrons


bprotons


cneutrons


datom


View Answer atom

In boiling water reactor, moderator is__________________?


acoolant itself


bferrite rod


cgraphite rod


dliquid sodium metal


View Answer coolant itself

Pressurised water reactor is designed________________?


afor boiling pi water in the core


bto use liquid sodium metal as coolant


cto use intermediate coolant


dto prevent the water coolant from boiling in the core



A fast breeder reactor uses_______________?


a90% U-235


bU-238


cU-235


dPu-239


View Answer 90% U-235

Effective moderators are those materials which contain____________________?


alight weight atoms


bheavy weight atoms


ccritical atoms


dzero weight atoms


View Answer light weight atoms

The coolant used in boiling water reactor is________________?


aCo2


bpressurised water


cmixture of water and steam


dliquid metal



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