Power Plant Engineering - Mechanical Engineering Questions and Answers

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Uranium has isotopes

A.

U₂₃₄

B.

U₂₃₅

C.

U₂₃₈

D.

All of these

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The most commonly used moderator in nuclear plants is

A.

Heavy water

B.

Concrete and bricks

C.

Graphite and concrete

D.

Graphite

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Breeder reactor has a conversion ratio of

A.

Unity

B.

More than unity

C.

Less than unity

D.

Zero

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Hydrogen is preferred as better coolant in comparison to CO₂ because former

A.

Is lighter

B.

Is inert

C.

Has high specific heat

D.

Is a good conductor

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

A.

Electrons

B.

Protons

C.

Neutrons

D.

Atom

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

A.

Infinite

B.

Zero

C.

Exactly balanced by the loss of neutrons through leakage

D.

Initiated

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The energy released during the fission of one atom of Uranium 235 in million electron volts is about

A.

100

B.

200

C.

300

D.

400

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Plutonium is produced

A.

As basic raw material

B.

By neutron irradiation of Uz

C.

By neutron irradiation of thorium

D.

Artificially

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In triggering fission, the following types of neutrons are desirable

A.

Fast moving

B.

Slow moving

C.

Critical neutrons

D.

Neutrons at rest