A. Fuel elements
B. Operating personnels
C. Walls of the reactor
D. None of these
Related Mcqs:
- Nuclear reactors are provided with shield to guard against the emission of mainly _____________ rays?
A. X
B. α and β
C. Neutrons & gamma
D. Infrared - Candu reactor is a ______________ nuclear reactor?
A. Natural uranium fuelled heavy water cooled & moderated
B. Highly enriched uranium (85% U-235) fuelled
C. Homogeneous
D. Fast breeder - 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 - The electric power generation cost in nuclear power plant is less than that in a coal based thermal power plant, mainly because the________________?
A. Fuel cost per unit power generated is less
B. Thermal efficiency of the former is higher
C. Maintenance cost of the former is less
D. None of these - ____________ nuclear reactor does not require a heat exchanger to supply steam to power turbine?
A. Molten sodium cooled
B. Helium cooled
C. Boiling water
D. Pressurised water - Pressure of CO2 gas (which is a coolant) in the Calder-Hall nuclear reactor is ______________ kgf/cm2?
A. 0.2
B. 7
C. 35
D. 50 - Thorium-232 is converted into uranium-233 in a/an ______________ nuclear reactor?
A. Thermal
B. Fast breeder
C. Heavy water moderated
D. Enriched uranium - Which of the following is a fuel for a fusion reactor (thermonuclear reactor) ?
A. Deuterium and tritium
B. U-233
C. Thorium
D. Heavy water - An ideal coolant for a nuclear reactor should ________________?
A. Be a good absorber of neutrons
B. Be capable of attaining high temperature, only when it is pressurised
C. Have high density, but low heat transfer co-efficient
D. Be free from radiation damage and non-corrosive
