71. Emission of β-particles during radioactive decay of a substance is from
innermost shell
nucleus
outermost shell
none of these
✅ The correct answer is option B.
Nuclear Power Engineering MCQs
72. The atomic weight and atomic number of an element are A and Z respectively. What is the number of neutrons in the atom of that element ?
A+Z
A- Z
A
Z
✅ The correct answer is option B.
73. The half life period of a radioactive element depends upon the
temperature
pressure
amount of element present
none of these
✅ The correct answer is option D.
74. Velocity of the thermal neutron (< 0.025 eV) used for fission of U-235 is around __________ m/sec.
1
2200
3 x 1011
9 x 1021
✅ The correct answer is option B.
75. MeV is the unit of
radioactivity
energy
potential difference
none of these
✅ The correct answer is option B.
76. Molten sodium is used as a coolant in a fast breeder reactor, because of its
excellent moderating properties.
neutron breeding capability.
faster heat removal capability from the core.
capability to increase the reaction rate in the core.
✅ The correct answer is option C.
77. Tarapur atomic power station
has two boiling water reactors of American design.
has an installed capacity of 400 MW.
is the first power reactor in India, which became critical in 1969.
all (a), (b) and (c).
✅ The correct answer is option D.
78. Nuclear power generation capacity in India is
3000 MW.
10000 MW.
more than hydroelectric power generation capacity.
more than thermal power generation capacity.
✅ The correct answer is option A.
79. Ordinary water is not used as a moderator because, it
has a low absorption cross-section.
has a low scattering cross-section.
absorbs neutrons.
does not absorb neutrons.
✅ The correct answer is option C.
80. Nuclear power reactor located at Tarapur is of __________ type.
fast breeder
pressurised water
boiling water
gas cooled
✅ The correct answer is option C.