Related Questions

Biological shield is provided in a nuclear power reactor to protect the __________ from radiation damage.
A Fuel elements
B Operating personnels
C Walls of the reactor
D None of these
Thermal shield used in high powered nuclear reactor to protect the walls of the reactor from radiation damage is made of
A Concrete
B Steel
C Zircalloy
D Graphite
Biological shield in a nuclear reactor is generally provided to protect against the
A α-rays
B β-rays
C Gamma rays & neutrons
D Electrons
CANDU type nuclear reactor using natural uranium as fuel is the extensively used nuclear reactor because of the fact that the
A Specific fuel consumption is very low due to the use of heavy water
B Fuel cost is much lower than that used in pressurised water or boiling water reactor
C Heavy water is used both as coolant as well as moderator
D Both B and C
If a nuclear reactor produces more fissile nuclear fuel than it consumes, then it is called a __________ reactor.
A Critical
B Breeder
C Fertile
D Heterogenous
In case of a __________ reactor, the composition in the reactor and at the exit of the reactor is the same.
A Semi-batch
B Tubular
C Batch
D Back-mix
The following present serious difficulty in designing reactor shield
A Alpha particles
B Beta particles
C Thermal neutrons
D Fast neutrons and gamma rays
A nuclear reactor is said to be critical when the neutron population in the reactor core is
A Rapidly increasing leading to the point of explosion
B Decreasing from the specified value
C Reduced to zero
D Constant
A thermal nuclear reactor compared to a fast breeder reactor
A Uses slower neutrons for fission
B Uses faster neutrons for fission
C Gives higher power density
D Requires less fuel to run at the same power level
Thermal shield is used in high powered nuclear reactors to
A Protect the walls of the reactor from radiation damage
B Absorb the fast neutrons
C Slow down the secondary neutrons
D Protect the fuel element from coming in contact with the coolant

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