A. Fissile atoms are evenly distributed throughout the mass of nuclear reactor
B. Same substance (e.g. heavy water) is used as moderator & coolant
C. The fuel and the moderator is mixed to form a homogeneous material
D. All A., B. and C.
Related Mcqs:
- In a homogeneous nuclear reactor, the _____________ are mixed together?
A. Fuel & coolant
B. Fuel & moderator
C. Coolant & moderator
D. None of these - The main purpose of control rod in a nuclear reactor is to control the___________________?
A. Chain reaction and hence the power output by regulating the number of secondary neutrons
causing fission
B. Emission of hazardous radiation
C. Conversion of fissile material into fertile material
D. Velocity of the secondary neutrons - In a pressurised water reactor (PWR), the___________________?
A. Fuel is natural uranium and heavy water acts both as moderator & coolant
B. Coolant water boils in the core of the reactor
C. Coolant water is pressurised to prevent bulk boiling of water in the core
D. Use of moderator is not required - 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 - 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 - 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 - The half life period of a radioactive element depends upon the___________________?
A. Temperature
B. Pressure
C. Amount of element present
D. None of these - Coolant used in a fast breeder reactor is____________________?
A. Molten sodium
B. Heavy water
C. Ordinary water
D. Helium - Moderating material used in a thermal-reactor should be a ____________________?
A. Good absorber of neutrons
B. Solid substance
C. Poor absorber of neutrons
D. None of these - A fast breeder reactor employs___________________?
A. Graphite as moderator
B. Water as coolant
C. Molten sodium as coolant as well as moderator
D. U-235 as fuel
