POWER PLANT ENGINEERING QUIZ

The nuclear radiators produced in a reactor which must be shielded are

None of these

Neutron and gamma rays

Electrons

α, β and γ rays

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Amongst the following, the fissionable materials are

U₂₃₁ and Pu₂₃₃

U₂₃₅ and Pu₂₃₅

U₂₃₃ and Pu₂₂₉

U₂₃₈ and Pu₂₃₉

TRUE ANSWER : ?
YOUR ANSWER : ?

A nuclear fission produces energy of following order in MeV

20000

200

20

2000

TRUE ANSWER : ?
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Moderator in nuclear plants is used to

Reduce temperature

Cause collision with the fast moving neutrons to reduce their speed

Control the reaction

Extract heat from nuclear reaction

TRUE ANSWER : ?
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U238 will undergo fission by

Medium energy neutrons

Low energy (slow) neutrons alone

Either fast or slow neutrons

High energy (fast) neutrons alone

TRUE ANSWER : ?
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fission chain reaction in uranium can be developed by

Slowing down fast neutrons so that Uz fission continues by slow motion neutrons

Absorbing all neutrons

Using moderator

Accelerating fast neutrons

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The most commonly used moderator in nuclear plants is

Graphite

Graphite and concrete

Heavy water

Concrete and bricks

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Reactors designed for propulsion applications are designed for

Enriched uranium

Natural uranium

Any type of uranium

Pure uranium

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A fast breeder reactor uses

U₂₃₅

90% U₂₃₅

Pu₂₃₉

U₂₃₈

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The most practical fuel for a thermonuclear reactor, both from economical and nuclear consideration is

Deuterium

Uranium

Thorium

Plutonium

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