Used fuel should be reprocessed
Moderator should be used
Coolant should be employed
Control rods should be used
A. Used fuel should be reprocessed
To maintain constant pressure in primary circuit under varying load
To Supply high pressure steam
To increase pressure of water in primary circuit
To provide sub cooled water at high pressure
Electron volt
Electron ampere
Curie
MV
Plutonium
Uranium
Deuterium
Thorium
Belt conveyor
Bucket conveyor
Fork lift truck
Overhead crane
U₂₃₃ and Pu₂₂₉
U₂₃₁ and Pu₂₃₃
U₂₃₅ and Pu₂₃₅
U₂₃₈ and Pu₂₃₉
2.46
24.6
246
2460
1 neutron
3 neutrons
1, 2 neutrons
2 neutrons
No new neutron
At least one new neutron
One new neutron
More than one new neutron
Fast
Slow
In bulk
Static
Boiling water
Gas cooled
Pressurised water
All of the above
Electrons
Protons
Neutrons
Atom
U₂₃₃ and Pu₂₃₉
U
U₂₃₈ and Pu₂₃₉
U₂₃₈ and Th₂₃₉
More
Less
Same
Zero
Kinetic energy of neutrons
Kinetic energy of fission products
Instantaneous release of gamma rays
Gradual radioactive decay of fission products
Greater than 1.0
Less than 1.0
Equal to zero
Equal to 1.0
Mass number
Atomic number
Chemical properties
Position in periodic table
Infinite
Zero
Exactly balanced by the loss of neutrons through leakage
Initiated
Slow down the speed of fast moving neutrons
Control the reaction
Reduce the temperature
Extracts heat from nuclear reaction
Protons in the nucleus
Electrons in the nucleus
Neutrons in the nucleus
Electrons in the atom
In a heterogeneous or solid fuel reactor, the fuel is mixed in a regular pattern within moderator.
Slow or thermal neutrons have energy of the order or 0.025 eV
Fast neutrons have energies above 1000 eV
Fast reactor uses moderator
Natural uranium
Molten lead
Any form of uranium
Thorium
Fast moving
Slow moving
Critical neutrons
Neutrons at rest
90% U₂₃₅
U₂₃₈
U₂₃₅
Pu₂₃₉
Nucleus
Electron
Proton
Meson
Reduce temperature
Extract heat from nuclear reaction
Control the reaction
Cause collision with the fast moving neutrons to reduce their speed
Slowing down fast neutrons so that Uz fission continues by slow motion neutrons
Accelerating fast neutrons
Absorbing all neutrons
Using moderator
Same
More
Less
May be less or mote depending on size
Does not absorb neutrons
Absorbs neutrons
Accelerates neutrons
Eats up neutrons
Boiler
Direct cycle of coolant system
Double circuit system of coolant cycle
Multi passes system
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