A. reduce temperature
B. extract heat from nuclear reaction
C. control the reaction
D. cause collision with the fast moving neutrons to reduce their speed
E. moderate the radioactive pollution
Related Mcqs:
- The most commonly used moderator in nuclear plants is___________________?
A. heavy water
B. concrete and bricks
C. graphite and concrete
D. deutrium
E. graphite - The function of control rods in nuclear plants is to__________________?
A. control temperature
B. control readioactive pollution
C. control absorption of neutron
D. control fuel consumption
E. none of the above - Gas cooled reactor uses following materials as moderator, and coolant____________________?
A. graphite, C02
B. graphite, air
C. heavy water, C02
D. lead, H2
E. concrete, N2 - Boiling water reactor uses the following as moderator, coolant and working fluid________________?
A. ordinary fluid
B. heavy water
C. molten lead
D. hydrogen gas
E. none of the above - Which of the following is more appropriate for a moderator. One which_________________?
A. does not absorb neutrons
B. absorbs neutrons
C. accelerates neutrons
D. eats up neutrons
E. regenerates neutrons - In boiling water reactor, moderator is__________________?
A. coolant itself
B. ferrite rod
C. graphite rod
D. liquid sodium metal
E. blanket of thorium - The efficiency of a nuclear power plant in comparison to conventional and nuclear consideration is__________________?
A. higher cost of nuclear fuel
B. high initial cost
C. high heat rejection in condenser
D. lower temperature and pressure condi-tions
E. nuclear hazard risk - The most practical fuel for a thermo-nuclear reactor, both from econocical and nuclear consideration is____________________?
A. plutonium
B. uranium
C. deuterium
D. thorium
E. lithium - Reflector in nuclear plants is used to________________?
A. return the neutrons back into the core
B. shield the radioactivity completely
C. check polllution
D. conserve energy
E. is not used - The presence of reflector in nuclear power plants results in___________________?
A. increased production of neutrons
B. complete absorption of neutrons
C. controlled production of neutrons
D. decreased leakage of neutrons
E. decrease of speed of neutrons
