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Mechanical Engineering Objective Questions { Nuclear Power Plants }

22. Ferrite material is
A.The most fissionable material
B.The basic fuel for nuclear plants
C.Basic raw material for nuclear plants
D.The material which absorbs neutrons and undergoes spontaneous changes leading to the formation of fissionable material

23. Ideally the neutron flux in reactor should be
A.Maximum in centre and zero at side
B.Maximum at side and zero in centre
C.Uniform throughout
D.Zero throughout

24. Effective moderators are those materials which contain
A.Light weight atoms
B.Heavy weight atoms
C.Critical atoms
D.Zero weight atoms

25. 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

26. A pressurised water reactor employs pressuriser for the following application
A.To maintain constant pressure in primary circuit under varying load
B.To supply high pressure steam
C.To increase pressure of water in primary circuit
D.To provide sub-cooled water at high pressure

27. Solid fuel for nuclear reactions may be fabricated into various small shapes such as
D.Any one of the above

28. In a fission process, maximum %age of energy is released as
A.Kinetic energy of neutrons
B.Kinetic energy of fission products
C.Instantaneous release of gamma rays
D.Gradual radioactive decay of fission products

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