Multiple Choice Questions (MCQ) on Nuclear Reactors
1-Which type of neutrons are more effective in triggering fission?
(A) static
(B) slow
(C) fast
(D) any of the above
2-Which of the following is used as primary fuel?
(A) Plutonium
(B) Uranium
(C) U-238
(D) All of the above
3-Following is used as coolant in boiling water reactor
(A) Mixture of water and steam
(B) Carbon dioxide
(C) Mercury
(D) None of the above
4-The unit of radioactivity is
(A) Volt
(B) Curie
(C) electron-ampere
(D) none of the above
5- Following type of fuel is used for reactors for propulsion applications use
(A) Thorium
(B) Plutonium
(C) Natural uranium
(D) Molten lead
6-The moderator used in boiling water reactor is
(A) graphite rod
(B) liquid sodium
(C) coolant itself acts as moderator
(D) ferrite rod
7-Following type of pump circulates the liquid metal in liquid metal cooled reactor
(A) axial
(B) centrifugal
(C) electromagnetic
(D) reciprocation
8-The reactor which is capable of converting ferrite material into fissile isotopes is known as
(A) Boiling water reactor
(B) Fast breeder reactor
(C) Regenerative reactor
(D) None of the above
9-In which of the reactor, super-heated steam is generated
(A) gas cooled
(B) boiler water
(C) pressurized water
(D) all of the above
10-The function of reflector in nuclear power plants is to
(A) decrease leakage of neutrons
(B) control production of neutrons
(C) decrease speed of neutrons
(D) increase production of neutrons
11-The moderator used in fast breeder reactor is
(A) pressurized water
(B) fertile material
(C) graphite rod
(D) no moderator is used
12-In boiling water reactor, ordinary fluid is used as
(A) moderator
(B) coolant
(C) working fluid
(D) all of the above
13-Following material is used as moderator and coolant in Gas cooled reactor.
(A) Heavy water, Carbon dioxide
(B) Graphite, air
(C) Graphite, Carbon dioxide
(D) None of the above
14-Fuel used in boiling water reactor is
(A) Thorium
(B) Plutonium
(C) Enriched uranium
(D) None of the above
15-Following is the heaviest.
(A) electron
(B) atom
(C) proton
(D) neutron
16-Following is the lightest.
(A) electron
(B) atom
(C) proton
(D) neutron
17-Following is the property of effective moderator.
(A) It contain zero weight atoms
(B) It contains heavy weight atoms
(C) It contains light weight atoms
(D) none of the above
18-The most common material used for shielding is
(A) black carbon paper
(B) lead or concrete
(C) graphite or cadmium
(D) thick GI sheets
19-The conversion ratio in Breeder reactor is
(A) zero
(B) unity
(C) more than unity
(D) less than unity
20-A moderator is one which ___ neutrons.
(A) regenerates
(B) does not absorb
(C) accelerates
(D) absorbs
ANSWERS:
1-(B), 2-(B), 3-(A), 4-(B), 5-(D), 6-(C), 7-(C), 8-(C), 9-(A), 10-(A), 11-(D), 12-(D), 13-(C), 14-(C), 15-(B), 16-(A), 17-(C), 18-(B), 19-(C), 20-(B)