POWER PLANT ENGINEERING QUIZ

Control absorption of neutron

Control radioactive pollution

Control fuel consumption

Control temperature

More than one new neutron

One new neutron

At least one new neutron

No new neutron

Reduced to zero

Rapidly increasing leading to the point of explosion

Decreasing from the specified value

Constant

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

It is capable of generating much more than rated capacity

It is generating power to rated capacity

There is danger of nuclear spread

Maximum at side and zero in canter

Zero throughout

Uniform throughout

Maximum in centre and zero at side

Reduce temperature

Cause collision with the fast moving neutrons to reduce their speed

Control the reaction

Extract heat from nuclear reaction

Heavy water

Graphite

Carbon dioxide

No moderator is needed

Water vapour

O2

CO

CO2

Slow or thermal neutrons have energy of the order or 0.025 eV

Fast reactor uses moderator

In a heterogeneous or solid fuel reactor, the fuel is mixed in a regular pattern within moderator

Fast neutrons have energies above 1000 eV

Pu₂₃₃

U₂₃₅

U₂₃₈

Pu₂₃₉