151. Use of molten metal as a coolant in fast breeder reactor helps in
rapid heat transfer from the core.
accelerating the reaction rate in the core.
breeding neutrons.
accelerating the neutrons.
✅ The correct answer is option A.
Nuclear Power Engineering MCQs
152. The ratio of volume of an atom to that of its nucleus is
1012
10-Dec
10-Aug
108
✅ The correct answer is option A.
153. Bhabha Atomic Research Centre (BARC) located at Trombay (near Bombay) has
five operating research reactors (namely Apsara, Cirus Zerelina, Purnima and Dhurva).
a 420 MW nuclear power plant.
a very large capacity (100 tons/yr) heavy water plant.
all (a), (b) and (c).
✅ The correct answer is option A.
154. Safety rods provided in nuclear reactors to guard against accidents, in case of earthquake are made of
high carbon steel.
molybdenum.
zircalloy.
boron or cadmium.
✅ The correct answer is option D.
155. Primary purpose of a __________ nuclear reactor is to supply a high neutron flux of the order of 1013 to 1014 neutrons/cm2 second.
research
power
breeder
homogeneous
✅ The correct answer is option A.
156. The specific heats of three gaseous coolants namely H2, He and CO2 in the increasing order are
CO2, He, H2
CO2, H2, He
H2, He, CO2
H2, CO2, He
✅ The correct answer is option A.
158. Which of the following is the best nuclear fuel?
Np- 239
U-234
Pu-239
Th-236
✅ The correct answer is option C.
159. A thermal nuclear reactor compared to a fast breeder reactor
uses slower neutrons for fission.
uses faster neutrons for fission.
gives higher power density.
requires less fuel to run at the same power level.
✅ The correct answer is option A.
160. Ceramic nuclear metals compared to solid nuclear metals have
higher melting points.
low strength at high temperature.
more chances of radiation damage.
poorer corrosion resistance.
✅ The correct answer is option A.