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.Management Sciences
Category: Nuclear Power Plants
Pick up the wrong statement?
A. In a heterogeneous or solid-fuel reactor, the fuel is mixed in a regular pattern within moderator.
B. Slow or thermal neutrons have energy of the order or 0.025 eV
C. Fast neutrons have energies above 1000 eV
D. Fast reactor uses moderator
E. Most serious drawback in using water as coolant in nuclear plants is its high vapour pressure
Boiling water reactor employs__________________?
A. boiler
B. direct cycle of coolant system
C. double circuit system of coolant cycle
D. multi pass system
E. single circuit system
Half life of a radioactive isotope corresponds to the time required for half of the following to decay__________________?
A. electrons
B. protons
C. neutrons
D. nulceus
E. atom
Isotopes of same elements have___________________?
A. same atomic number and different masses
B. same chemical properties but different atomic numbers
C. different masses and different atomic numbers
D. different chemical properties and same atomic numbers
E. same chemical properties and same atomic numbers
In triggering fission, which type of neutrons are more effective_________________?
A. fast
B. slow
C. in bulk
D. static
E. activated
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
A pressurised water reactor employs pressuriser for the following application________________?
A. to maintain constant pressure in primary circuit under varying load
B. to Supply high pressure steam
C. to increase pressure of water in primary circut
D. to provide subcooled water at high pressure
E. all of the above
The nuclear power plant at Tarapur has the following reactor________________?
A. fast breeder
B. pressurised water
C. boiling water
D. sodium graphite
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 fast breeder reactors___________________?
A. any type of moderator can be used
B. graphite is used as the moderator
C. heavy water is used as the moderator
D. moderator may or may not be used
E. moderator is dispensed with
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