POWER PLANT ENGINEERING QUIZ

Amongst the following, the fissionable materials are

U₂₃₅ and Pu₂₃₅

U₂₃₁ and Pu₂₃₃

U₂₃₃ and Pu₂₂₉

U₂₃₈ and Pu₂₃₉

TRUE ANSWER : ?
YOUR ANSWER : ?

When a reactor becomes critical, then the production of neutrons is

Initiated

Infinite

Zero

Exactly balanced by the loss of neutrons through leakage

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is not a safety valve for the boilers?

Level type

sliding type

dead weight type

Spring type

TRUE ANSWER : ?
YOUR ANSWER : ?

The predominant isotope of the naturally occurring element is

Pu₂₃₃

U₂₃₅

Pu₂₃₉

U₂₃₈

TRUE ANSWER : ?
YOUR ANSWER : ?

In boiling water reactor, moderator is

Graphite rod

Coolant itself

Liquid sodium metal

Ferrite rod

TRUE ANSWER : ?
YOUR ANSWER : ?

In order to have constant chain reaction to produce a constant rate of heat output, the value of ratio of the number of neutrons in one generation to the number of neutrons in the immediately preceding generation must be

Less than 1.0

Equal to 1.0

Equal to zero

Greater than 1.0

TRUE ANSWER : ?
YOUR ANSWER : ?

A power plant giving least running cost of production of electrical power is

Nuclear power plant

Gas turbine power plant

Steam power plant

Hydro electric power plant

TRUE ANSWER : ?
YOUR ANSWER : ?

Enriched uranium is required as a fuel in a nuclear reactor, if light water is used as moderator and coolant, because light water has

High neutron scatter cross-section

Low moderating efficiency

Low neutron absorption cross-section

High neutron absorption cross-section

TRUE ANSWER : ?
YOUR ANSWER : ?

A moderator

Accelerates neutrons

Absorbs neutrons

Does not absorb neutrons

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Pick up the wrong statement fast breeder reactors

Use water as coolant

Are liquid metal cooled

Operate at extremely high power densities

Produce more fuel than they consume

TRUE ANSWER : ?
YOUR ANSWER : ?

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