Power Plant Engineering 1000+ MCQ with answer for IBPS Clerk

1. In triggering fission, the following types of neutrons are desirable
A. Fast moving
B. Slow moving
C. Critical neutrons
D. Neutrons at rest
Answer : B

2. Which of the following is the primary fuel?
A. U???
B. U
C. U???
D. Pu
Answer : B

3. The most practical fuel for a thermonuclear reactor, both from economical and nuclear consideration is
A. Plutonium
B. Uranium
C. Deuterium
D. Thorium
Answer : C

4. Each fission of U??? produces on the average _________ fast neutrons as a product of reaction.
A. 2.46
B. 24.6
C. 246
D. 2460
Answer : A

5. 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
Answer : C

6. The process by which a heavy nucleus is spitted into two light nuclei is known as
A. Splitting
B. Fission
C. Fusion
D. Disintegration
Answer : B

7. The function of control rods in nuclear plants is to
A. Control temperature
B. Control radioactive pollution
C. Control absorption of neutron
D. Control fuel consumption
Answer : C

8. A boiling water reactor uses following as fuel
A. Enriched uranium
B. Plutonium
C. Thorium
D. U
Answer : A

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

10. A fast breeder reactor uses
A. 90% U???
B. U???
C. U???
D. Pu???
Answer : A

11. The energy released during the fission of one atom of Uranium 235 in million electron volts is about
A. 100
B. 200
C. 300
D. 400
Answer : B

12. A pressurised water reactor employs pressurises 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
Answer : A

13. Pressurised water reactor is designed
A. For boiling pi water in the core
B. To use liquid sodium metal as coolant
C. To use intermediate coolant
D. To prevent the water coolant from boiling in the core
Answer : D

14. The nuclear radiators produced in a reactor which must be shielded are
A. Electrons
B. ?, ? and ? rays
C. Neutron and gamma rays
D. None of these
Answer : C

15. Amongst the following, the fissionable materials are
A. U??? and Pu???
B. U??? and Pu???
C. U??? and Pu???
D. U??? and Pu???
Answer : A

16. 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
B. Control the reaction
C. Reduce the temperature
D. Extracts heat from nuclear reaction
Answer : A

17. Plutonium (Pu???) is produced
A. Artificially
B. By fission of Th???
C. When U??? is irradiated by neutrons
D. As basic raw material
Answer : C

18. The energy required to be applied to a radioactive nucleus for the emission of a neutron is
A. 1 MeV
B. 2.4 MeV
C. 4.3 MeV
D. 7.8 MeV
Answer : D

19. In a fission process, maximum percentage 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
Answer : B

20. Which of the following particles is the lightest?
A. Nucleus
B. Electron
C. Proton
D. Meson
Answer : B

21. The material most commonly used for shielding is
A. Carbon
B. Lead
C. Concrete
D. All of these
Answer : C

22. The following present serious difficulty in designing reactor shield
A. Alpha particles
B. Beta particles
C. Thermal neutrons
D. Fast neutrons and gamma rays
Answer : D

23. 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
Answer : D

24. A nuclear unit becoming critical means
A. It is generating power to rated capacity
B. It is capable of generating much more than rated capacity
C. There is danger of nuclear spread
D. Chain reaction that causes automatic splitting of the fuel nuclei has been established
Answer : D

25. The risk of radioactive hazard is greatest in the turbine with following reactor
A. Pressurised water
B. Boiling water
C. Gas cooled
D. Liquid metal cooled
Answer : B

26. U233 is produced
A. As basic raw material
B. By neutron irradiation of Uz
C. By neutron irradiation of thorium
D. Artificially
Answer : C

27. Enriched uranium may contain fissionable contents of the order of
A. 1-99 %
B. 1-25 %
C. 1-50 %
D. 1-75 %
Answer : A

28. For economical operation of a nuclear plant
A. Used fuel should be reprocessed
B. Moderator should be used
C. Coolant should be employed
D. Control rods should be used
Answer : A

29. Half life of a radioactive isotope corresponds to the time required for half of the following to decay
A. Electrons
B. Protons
C. Neutrons
D. Atom
Answer : D

30. The control rods in the control system of nuclear reactors are used to
A. Absorb excess neutrons
B. Control fuel consumption
C. Control temperature
D. All of these
Answer : A

31. Which of the following can be used as a coolant in nuclear plant?
A. Light or heavy water
B. Molten lead
C. Carbon dioxide
D. Freon
Answer : A

32. Moderator in nuclear plants is used to
A. Reduce temperature
B. Extract heat from nuclear reaction
C. Control the reaction
D. Cause collision with the fast moving neutrons to reduce their speed
Answer : D

33. The presence of reflector in nuclear power plants results in
A. Increased production of neutrons
B. Complete absorption of neutrons
C. Controlled production of neutrons
D. Decreased leakage of neutrons
Answer : D

34. A power plant giving least running cost of production of electrical power is
A. Steam power plant
B. Gas turbine power plant
C. Hydro electric power plant
D. Nuclear power plant
Answer : D

35. The fast breeder reactor uses the following moderator
A. Demineralised water
B. Carbon dioxide
C. Heavy water
D. No moderator is used
Answer : D

36. In a thermal power plant, coal from the coal handling plant is moved to the boiler bunker through a
A. Belt conveyor
B. Bucket conveyor
C. Fork lift truck
D. Overhead crane
Answer : A

37. A moderator
A. Absorbs neutrons
B. Does not absorb neutrons
C. Accelerates neutrons
D. None of these
Answer : B

38. A reactor capable of converting a ferrite material into fissile isotopes is called
A. Regenerative reactor
B. Fast breeder reactor
C. Breeder reactor
D. Boiling water reactor
Answer : A

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

40. A nuclear reactor is said to be critical when the neutron population in the reactor core is
A. Rapidly increasing leading to the point of explosion
B. Decreasing from the specified value
C. Reduced to zero
D. Constant
Answer : D

41. The main interest of shielding in nuclear reactor is protection against
A. X-rays
B. Infrared rays
C. Neutrons and gamma rays
D. Electrons
Answer : D

42. Nuclear reactors are used
A. To produce heat for thermoelectric power
B. To produce fissionable material
C. To propel ships, submarines, aircrafts
D. All of these
Answer : D

43. The secondary fuel used in nuclear power plants is
A. U??? and Pu???
B. U??? and Th???
C. U??? and Pu???
D. U??? and Pu???
Answer : A

44. Natural uranium is made up of
A. 99.282% U???, 0.712% U???, 0.006% U???
B. 99.282% U???, 0.712% U???, 0.06%' U???
C. 99.282% U???, 0.712% U???, 0.006% U???
D. 99.282% U???, 0.712% U???, 0.006% U???
Answer : A

45. Gas cooled reactor uses following materials as moderator, and coolant
A. Graphite, CO₂
B. Graphite, air
C. Heavy water, CO₂
D. Lead, H₂
Answer : A

46. Plutonium is produced
A. As basic raw material
B. By neutron irradiation of Uz
C. By neutron irradiation of thorium
D. Artificially
Answer : B

47. The predominant isotope of the naturally occuring element is
A. U???
B. U???
C. Pu???
D. Pu???
Answer : B

48. Artificial radioactive isotopes find application in
A. Power generation
B. Nucleonic devices
C. Nuclear fission
D. Medical field
Answer : D

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

50. Which of the following are ferrite materials?
A. U??? and Pu???
B. U
C. U??? and Pu???
D. U??? and Th???
Answer : B