Mechanical Engineering MCQs

Page No. 165

Breeder reactor has a conversion ratio of_____________________?


aunity

✖


bmore than unity

✓


cless than unity

✖


dzero

✖


View Answer more than unity

One gram of uranium will produce energy equivalent to approximately____________________?


a1 tonne of high grade coal

✖


b4.5 tonnes of high grade coal

✓


c10 tonnes of high grade coal

✖


d100 tonnes of high grade coal

✖



Boiling water reactor employs__________________?


aboiler

✖


bdirect cycle of coolant system

✓


cdouble circuit system of coolant cycle

✖


dmulti pass system

✖



The total energy released in fission of U is__________________?


a5 MeV

✖


b10 MeV

✖


c199 MeV

✓


d168 MeV

✖


View Answer 199 MeV

A nuclear unit becoming critical means_______________?


ait is generating power to rated capacity

✖


bit is capable of generating much more than rated capacity

✖


cthere is danger of nuclear spread

✖


dchain reaction that causes automatic splitting of the fuel nuclei has been established

✓



Which is not identical for an atom and an isotope_________________?


amass number

✓


batomic number

✖


cchemical properties

✖


dposition in periodic table

✖


View Answer mass number

Atomic number of an element in the periodic table represents the numbers of_________________?


aprotons in the nucleus

✓


belectrons in me nucleus

✖


cneutrons in the nucleus

✖


delectrons in the atom

✖



In a centrifugal pump casing, the flow of water leaving the impeller, is___________________?


arectilinear flow

✖


bradial flow

✖


cfree vortex motion

✓


dforced vortex

✖


View Answer free vortex motion

For very high discharge at low pressure such as for flood control and irrigation applications, following type of pump is preferred_________________?


acentrifugal

✖


baxial flow

✓


creciprocating

✖


dmixed flow

✖


View Answer axial flow

High specific speed of a pump implies it is_____________________?


acentrifugal pump

✖


bmixed flow pump

✖


caxial flow pump

✓


dany one of the above

✖


View Answer axial flow pump

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