IBPS SO - Power Plant Engineering 1000+ MCQ [Solved] PDF Download

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

2. 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

3. A moderator generally used in nuclear power plants is
A. Graphite
B. Heavy water
C. Concrete
D. Graphite and concrete
Answer : D

4. In fast breeder reactors
A. Any type of moderator can be used
B. Graphite is used as the moderator
C. Heavy water is used as the moderator
D. Moderator is dispensed with.
Answer : D

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 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

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

8. The commonly used material for shielding is
A. Lead or concrete
B. Lead and tin
C. Graphite or cadmium
D. Thick galvanised sheets
Answer : A

9. Reflector in nuclear power plants _________ neutron leakage.
A. Increases
B. Decreases
C. Have no effect on
D. None of these
Answer : B

10. Fast breeder reactor uses
A. Boiler
B. Direct cycle of coolant system
C. Double circuit system of coolant cycle
D. Multi passes system
Answer : C

11. Plutonium (Pu239) is produced
A. Artificially
B. When U238 is irradiated by neutrons
C. By fission of Th232
D. As basic raw material
Answer : B

12. Which of the following statement is correct regarding the features of a Breeder reactor?
A. It produces more fuel than it consumes.
B. It requires highly enriched fuel.
C. It requires liquid sodium metal as moderator.
D. All of the above
Answer : D

13. 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

14. 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

15. 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

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

17. Boiling water reactor employs
A. Boiler
B. Direct cycle of coolant system
C. Double circuit system of coolant cycle
D. Multi passes system
Answer : B

18. In natural uranium, the constituents of three naturally occuring isotopes are
A. U??? = 0.006%, U??? = 0.712% and U??? = 99.282%
B. U??? = 0.712%, U??? = 0.006% and U??? = 99.282%
C. U??? = 99.282%, U??? = 0.006% and U??? = 0.712%
D. U??? = 0.006%, U??? = 99.282% and U??? = 0.712%
Answer : A

19. Pick up the wrong statement fast breeder reactors
A. Operate at extremely high power densities.
B. Are liquid metal cooled
C. Produce more fuel than they consume
D. Use water as coolant
Answer : D

20. 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

21. Atomic number of an element in the periodic table represents the numbers of
A. Protons in the nucleus
B. Electrons in the nucleus
C. Neutrons in the nucleus
D. Electrons in the atom
Answer : A

22. 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

23. Which of the following is more appropriate for a moderator? One which
A. Does not absorb neutrons
B. Absorbs neutrons
C. Accelerates neutrons
D. Eats up neutrons
Answer : A

24. 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

25. 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

26. Superheated steam is generated in following reactor
A. Boiling water
B. Gas cooled
C. Pressurised water
D. All of the above
Answer : B

27. In nuclear fission
A. The original elements change into completely different elements
B. The electrons of the element change
C. The molecules rearrange themselves to form other molecules
D. None of the above
Answer : A

28. The nuclear energy is measured as
A. MeV
B. Curie
C. Farads
D. MW
Answer : A

29. 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

30. Pick up the wrong statement
A. In a heterogeneous or solid fuel reactor, the fuel is mixed in a regular pattern within moderator.
B. Slow or thermal neutrons have energy of the order or 0.025 eV
C. Fast neutrons have energies above 1000 eV
D. Fast reactor uses moderator
Answer : D

31. A fast breeder reactor
A. Uses graphite rods as moderator
B. Has powerful moderator
C. Has no moderator
D. Uses ferrite material as moderator
Answer : C

32. Solid fuel for nuclear reactions may be fabricated into various small shapes such as
A. Plates
B. Pallets
C. Pins
D. Any one of the above
Answer : D

33. 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

34. 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

35. In the breeder reactors the generation of new fissionable atom is
A. At the lower rate than the consumption
B. At a higher rate than the consumption
C. At an equal rate of the consumption
D. Depends on other considerations
Answer : B

36. 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

37. 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

38. The total energy released in fission of U is
A. 5 MeV
B. 10 MeV
C. 199 MeV
D. 168 MeV
Answer : C

39. Where reactor operation is designed with fast neutrons such as in reactors using highly enriched fuel, the moderator used is
A. Heavy water
B. Graphite
C. Carbon dioxide
D. No moderator is needed
Answer : D

40. Reactors for propulsion applications are designed for
A. Any form of uranium
B. Natural uranium
C. Enriched uranium
D. Plutonium
Answer : C

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

42. Enriched uranium is one in which
A. Percentage of U??? has been artificially increased
B. Percentage of U has been artificially increased
C. Percentage of U??? has been artificially increased
D. Extra energy is pumped from outside
Answer : A

43. In boiling water reactor, moderator is
A. Coolant itself
B. Ferrite rod
C. Graphite rod
D. Liquid sodium metal
Answer : A

44. Breeder reactor has a conversion ratio of
A. Unity
B. More than unity
C. Less than unity
D. Zero
Answer : B

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

46. 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

47. A fission chain reaction in uranium can be developed
A. By increasing the contents of U???
B. By slowing down fast neutrons so that U??? fission continues by slow neutron
C. Both (A) and (B)
D. None of these
Answer : C

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

49. Reactors for propulsion applications use
A. Natural uranium
B. Molten lead
C. Any form of uranium
D. Thorium
Answer : B

50. 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