1.
Which of the following nuclear reactor does not need a heat exchanger for generation of steam
A
gas cooled
B
liquid metal cooled
C
pressurised water
D
boiling water
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Which of the following nuclear reactor does not need a heat exchanger for generation of steam
gas cooled
liquid metal cooled
pressurised water
boiling water
Which of the following is the primary fuel
Ulii
U
U238
Pu
Uranium-233 is produced
as basic raw material
by neutron irradiation of Uz
by neutron irradiation of thorium
artificially
U238 will undergo fission by
high energy (fast) neutrons alone
low energy (slow) neutrons alone
either fast or slow neutrons
medium energy neutrons
U235 will undergo fission by
high energy (fast) neutrons alone
low energy (slow) neutrons alone
either fast or slow neutrons
medium energy neutrons
The unit of radio-activity is
electron-volt
electron-ampere
curie
MeV
The total energy released in fission of U is
5 MeV
10 MeV
199 MeV
168 MeV
The size of the reactor is said to be critical when
chain reaction can be initiated
it becomes uncontrollable
it explodes
it produces no power
The risk of radioactive hazard is greatest in the turbine with following reactor
pressurised water
boiling water
gas cooled
liquid metal cooled
The process by which a heavy nucleus is splitted into two light nuclei is known as
splitting
fission
fusion
chain reaction
The nuclear energy is measured as
MeV
curie
kWhr
MW
The most commonly used moderator in nuclear plants is
heavy water
graphite
deutrium
graphite and concrete
The main interest of shielding in nuclear reactor is protection against
X-rays
infra-red rays
a, P, and y rays
neutrons and gamma rays
The function of control rods in nuclear plants is to
control temperature
control readioactive pollution
control absorption of neutron
control fuel consumption
The first nunclear power plant in India is located at
Kota
Kalapakkam
Tarapur
Baraeilly
The energy required to be applied to a radioactive nucleus for the emission of a neutron is
1 MeV
2.4 MeV
4.3 MeV
7.8 MeV
The energy produced by a thermal reactor of same size as a breeder reactor is
almost same
slightly more
slightly less
much less
The efficiency of a nuclear power plant in comparsion to a conventional thermal power plant is
same
more
less
may be less or mote depending on size
The coolant used in boiling water reactor is
Co2
pressurised water
mixture of water and steam
liquid metal
The breeding gain in case of thermal breeder reactor as compared to fast breeder reactor is
same
lower
higher
unity