Question: A moderator
[A].absorbs neutrons
does not absorb neutrons
accelerates neutrons
none of these
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
Ic Engines And Nuclear Power Plants
Nuclear reactors are used
Question: Nuclear reactors are used
[A].to produce heat for thermoelectric power
to produce fissionable material
to propel ships, submarines, aircrafts
all of these
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.
A moderator generally used in nuclear power plants is
Question: A moderator generally used in nuclear power plants is
[A].graphite
heavy water
concrete
graphite and concrete
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.
A moderator, in nuclear power plants, is a medium introduced into the fuel mass in order to
Question: A moderator, in nuclear power plants, is a medium introduced into the fuel mass in order to
[A].slow down the speed of fast moving neutrons
control the reaction
reduce the temperature
extract heat from nuclear reaction
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
A fission chain reaction in uranium can be developed
Question: A fission chain reaction in uranium can be developed
[A].by increasing the contents of U235
by slowing down fast neutrons so that U235 fission continues by slow neutron
both (a) and (b)
none of these
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
An atom bomb utilises uncontrolled nuclear fission.
Question: An atom bomb utilises uncontrolled nuclear fission.
[A].True
False
[A].
[B].
Answer: Option A
Explanation:
No answer description available for this question.
Each fission of U235 produces on the average __________ fast neutrons as a product of reaction.
Question: Each fission of U235 produces on the average __________ fast neutrons as a product of reaction.
[A].2.46
24.6
246
2460
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
In natural uranium, the constituents of three naturally occuring isotopes are
Question: In natural uranium, the constituents of three naturally occuring isotopes are
[A].U234 = 0.006%, U235 = 0.712% and U238 = 99.282%
U234 = 0.712%, U235 = 0.006% and U238 = 99.282%
U234 = 99.282%, U235 = 0.006% and U238 = 0.712%
U234 = 0.006%, U235 = 99.282% and U238 = 0.712%
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
A power plant giving least running cost of production of electrical power is
Question: A power plant giving least running cost of production of electrical power is
[A].steam power plant
gas turbine power plant
hydro electric power plant
nuclear power plant
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.
Enriched uranium is required as a fuel in a nuclear reactor, if light water is used as moderator and coolant, because light water has
Question: Enriched uranium is required as a fuel in a nuclear reactor, if light water is used as moderator and coolant, because light water has
[A].high neutron absorption cross-section
low moderating efficiency
high neutron scatter cross-section
low neutron absorption cross-section
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.