Kinetic energy of neutrons
Kinetic energy of fission products
Instantaneous release of gamma rays
Gradual radioactive decay of fission products
B. Kinetic energy of fission products
Splitting
Fission
Fusion
Disintegration
Reduce temperature
Extract heat from nuclear reaction
Control the reaction
Cause collision with the fast moving neutrons to reduce their speed
Higher cost of nuclear fuel
High initial cost
High heat rejection in condenser
Lower temperature and pressure conditions
Atomic power
Energy
Voltage
Radio activity
Alpha particles
Beta particles
Thermal neutrons
Fast neutrons and gamma rays
Mass number
Atomic number
Chemical properties
Position in periodic table
Demineralised water
Carbon dioxide
Heavy water
No moderator is used
Natural uranium
Enriched uranium
Pure uranium
Any type of uranium
1 tonne of high grade coal
4.5 tonnes of high grade coal
10 tonnes of high grade coal
100 tonnes of high grade coal
U₂₃₅
U₂₃₈
Pu₂₃₉
Pu₂₃₃
Plates
Pallets
Pins
Any one of the above
The original elements change into completely different elements
The electrons of the element change
The molecules rearrange themselves to form other molecules
None of the above
Almost same
Slightly more
Slightly less
Much less
High energy (fast) neutrons alone
Low energy (slow) neutrons alone
Either fast or slow neutrons
Medium energy neutrons
Nucleus
Electron
Proton
Meson
Heavy water
Graphite
Carbon dioxide
No moderator is needed
Maximum in centre and zero at side
Maximum at side and zero in canter
Uniform throughout
Zero throughout
100
200
300
400
Enriched uranium
Plutonium
Thorium
U
No new neutron
At least one new neutron
One new neutron
More than one new neutron
1 neutron
3 neutrons
1, 2 neutrons
2 neutrons
As basic raw material
By neutron irradiation of Uz
By neutron irradiation of thorium
Artificially
Lead or concrete
Lead and tin
Graphite or cadmium
Thick galvanised sheets
It is generating power to rated capacity
It is capable of generating much more than rated capacity
There is danger of nuclear spread
Chain reaction that causes automatic splitting of the fuel nuclei has been established
Infinite
Zero
Exactly balanced by the loss of neutrons through leakage
Initiated
X-rays
Infrared rays
Neutrons and gamma rays
Electrons
Increases
Decreases
Have no effect on
None of these
CO2
Pressurised water
Mixture of water and steam
Liquid metal
Chain reaction can be initiated
It becomes uncontrollable
It explodes
It produces no power
Electrons
Protons
Neutrons
Atom