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Mechanical Engineering Objective Questions { Nuclear-Power-Plants }

64. The efficiency of a nuclear power plant in comparison to conventional and nuclear consideration is
A.Higher cost of nuclear fuel
B.High initial cost
C.High heat rejection in condenser
D.Lower temperature and pressure conditions
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65. Breeder reactors employ liquid metal coolant because it
A.Acts as good moderator
B.Produces maximum steam
C.Transfers heat from core at a fast rate
D.Breeds neutrons
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66. The nuclear power plant at Tarapur has the following reactor
A.Fast breeder
B.Pressurised water
C.Boiling water
D.Sodium graphite
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67. The fuel needed, with reflector in nuclear power plant, in order to generate sufficient neutrons to sustain a chain reaction, would be
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68. In nuclear fission each neutron that causes fission releases
A.No new neutron
B.At least one new neutron
C.One new neutron
D.More than one new neutrons
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69. The fast breeder reactor uses the following moderator
A.De-mineralised water
B.No moderator is used
C.Heavy water
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70. A fission chain reaction in uranium can be developed by
A.Slowing down fast neutrons so that U235 fission continues by slow motion neutrons
B.Accelerating fast neutrons
C.Absorbing all neutrons
D.Using moderator
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