Moderator in nuclear plants is used to

cause collision with the fast moving neutrons to reduce their speed

extract heat from nuclear reaction

cause collision with the fast moving neutrons to reduce their speed

moderate the radioactive pollution.

Breeder reactors employ liquid metal coolant because it

transfers heat from core at a fast rate

increases rate of reaction in core.

the original elements change into completely different elements

the electrons of the element change

the molecules rearrange themselves to form other molecules

In a fission process, maximum %age of energy is released as

kinetic energy of fission products

instantaneous release of gamma rays

gradual readioactive decay of fission products

Boiling water reactor employs

double circuit system of coolant cycle

Enriched uranium is one in which

%age of U235 has been artificially in-creased

%age of U has been artificially increased

%age of U234 has been artificially in-creased

extra energy is pumped from outside

all impurities have been removed.

Uranium-233 is produced

by neutron irradiation of thorium

The efficiency of a nuclear power plant in comparsion to a conventional thermal power plant is

may be less or mote depending on size

Isotopes of same elements have

same chemical properties but different atomic numbers

same atomic number and different masses

same chemical properties but different atomic numbers

different masses and different atomic numbers

different chemical properties and same atomic numbers

same chemical properties and same atomic numbers.

The mass number of a substance represents the sum of total number of

protons and neutrons in a nucleus

protons and neutrons in an atom

protons and electrons in an atom

neutrons and electrons in an atom

protons and neutrons in a nucleus

protons and electrons in a nucleus.

A nuclear unit becoming critical means

chain reaction that causes automatic splitting of the fuel nuclei has been established

it is generating power to rated capacity

it is capable of generating much more than rated capacity

there is danger of nuclear spread

chain reaction that causes automatic splitting of the fuel nuclei has been established

Fast breeder reactor uses

double circuit system of coolant cycle

One gram of uranium will produce energy equivalent to approximately

1000 tonnes of high grade coal.

Reflector in nuclear plants is used to

return the neutrons back into the core

shield the radioactivity completely

the material which absorbs neutrons and undergoes spontaneous changes leading to the formation of fissionable material

the basic fuel for nuclear paints

basic raw material for nuclear plants

the material which absorbs neutrons and undergoes spontaneous changes leading to the formation of fissionable material

In fast breeder reactors

any type of moderator can be used

graphite is used as the moderator

heavy water is used as the moderator

moderator may or may not be used

The breeding gain in case of thermal breeder reactor as compared to fast breeder reactor is

higher/lower depending on the size of reactor.

Ideally the neutron flux in reactor should be

maximum in center and zero at side

maximum at side and zero in center

Nuclear Power Plants MCQ Interview Questions and Answers Quiz

59.

Pick up the wrong statement

In a heterogeneous or solid-fuel reactor, the fuel is mixed in a regular pattern within moderator.

Slow or thermal neutrons have energy of the order or 0.025 eV

Fast neutrons have energies above 1000 eV

Fast reactor uses moderator

Most serious drawback in using water as coolant in nuclear plants is its high vapour pressure.

1. In triggering fission, the following types of neutrons are desirable

2. Moderator in nuclear plants is used to

3. In boiling water reactor, moderator is

4. Breeder reactors employ liquid metal coolant because it

5. The risk of radioactive hazard is greatest in the turbine with following reactor

6. In nuclear fission

7. The function of control rods in nuclear plants is to

8. The following present serious difficulty in designing reactor shield

9. In a fission process, maximum %age of energy is released as

10. Reactors designed for propulsion applications are designed for

11. Boiling water reactor employs

12. Enriched uranium is one in which

13. The unit of radio-activity is

14. Uranium-233 is produced

15. Electron-volt is the unit of

16. A fast breeder reactor uses

17. The efficiency of a nuclear power plant in comparsion to a conventional thermal power plant is

18. Isotopes of same elements have

19. Atomic number of an element in the periodic table represents the numbers of

20. The mass number of a substance represents the sum of total number of

21. Which is not identical for an atom and an isotope

22. Amongst the following, the fissionable materials are

23. A nuclear unit becoming critical means

24. The most commonly used moderator in nuclear plants is

25. The nuclear energy is measured as

26. The total energy released in fission of U is

27. Breeder reactor has a conversion ratio of

28. Fast breeder reactor uses

29. One gram of uranium will produce energy equivalent to approximately

30. Which of the following nuclear reactor does not need a heat exchanger for generation of steam

31. The number of isotopes of hydrogen are

32. The commonly used material for shielding is

33. The main interest of shielding in nuclear reactor is protection against

34. Reflector in nuclear plants is used to

35. The energy required to be applied to a radioactive nucleus for the emission of a neutron is

36. Which of the following are ferrite materials

37. Ferrite material is

38. Which of the following particles is the lightest

39. Which of the following is the heaviest

40. In fast breeder reactors

41. In nuclear fission each neutron that causes fission releases

42. The breeding gain in case of thermal breeder reactor as compared to fast breeder reactor is

43. Gas cooled reactor uses following materials as moderator, and coolant

44. A nuclear fission produces energy of following order in MeV

45. The process by which a heavy nucleus is splitted into two light nuclei is known as

46. A nuclear fission is initiated when the critical energy as compared to neutron binding energy of the atoms is

47. The fast breeder reactor uses the following moderator

48. The first unclear power plant in India is located at

49. The nuclear power plant at Tarapur has the following reactor

50. Boiling water reactor uses the following as moderator, coolant and working fluid

51. Ideally the neutron flux in reactor should be

52. Enriched uranium may contain fissionable contents of the order of

53. U235 will undergo fission by

54. U238 will undergo fission by

55. A reactor capable of converting a ferrite material into fissile isotopes is called

56. Hydrogen is preferred as better coolant in comparison to C02 because former

57. Natural uranium is made up of

58. Plutonium is produced

59. Pick up the wrong statement

60. Pick up the wrong statement Fast breeder reactors

61. Plutonium-239 is produced

62. Which of the following type of pump is used in liquid metal cooled reactor for circulation of liquid metal

63. Which of the following is the primary fuel

64. A pressurised water reactor employs pressuriser for the following application

65. Which of the following can be used as a coolant in nuclear plant

66. Reactors for propulsion applications use

67. In triggering fission, which type of neutrons are more effective

68. For economical operation of a nuclear plant

69. The size of the reactor is said to be critical when

70. When a reactor becomes critical, then the production of neutrons is

71. In the breeder reactors the generation of new fissionable atom is

72. The energy produced by a thermal reactor of same size as a breeder reactor is

73. Supertheated steam is generated in following reactor

74. Solid- fuel for nuclear reactions may be fabricated into various small shapes such as

75. Which of the following is more appropriate for a moderator. One which

76. A fission chain reaction in uranium can be developed by

77. Effective moderators are those materials which contain

78. In order to have constant clain reaction to produce a constant rate of heat output, the value of ratio of the number of neutrons in one generation to the number of neutrons in the immediately preceding generation must be

79. A fast breeder reactor uses following as fuel

80. A boiling water reactor uses following as fuel

1.

In triggering fission, the following types of neutrons are desirable

2.

Moderator in nuclear plants is used to

3.

In boiling water reactor, moderator is

4.

Breeder reactors employ liquid metal coolant because it

5.

The risk of radioactive hazard is greatest in the turbine with following reactor

6.

In nuclear fission

7.

The function of control rods in nuclear plants is to

8.

The following present serious difficulty in designing reactor shield

9.

In a fission process, maximum %age of energy is released as

10.

Reactors designed for propulsion applications are designed for

11.

Boiling water reactor employs

12.

Enriched uranium is one in which

13.

The unit of radio-activity is

14.

Uranium-233 is produced

15.

Electron-volt is the unit of

16.

A fast breeder reactor uses

17.

The efficiency of a nuclear power plant in comparsion to a conventional thermal power plant is

18.

Isotopes of same elements have

19.

Atomic number of an element in the periodic table represents the numbers of

20.

The mass number of a substance represents the sum of total number of

21.

Which is not identical for an atom and an isotope

22.

Amongst the following, the fissionable materials are

23.

A nuclear unit becoming critical means

24.

The most commonly used moderator in nuclear plants is

25.

The nuclear energy is measured as

26.

The total energy released in fission of U is

27.

Breeder reactor has a conversion ratio of

28.

Fast breeder reactor uses

29.

One gram of uranium will produce energy equivalent to approximately

30.

Which of the following nuclear reactor does not need a heat exchanger for generation of steam

31.

The number of isotopes of hydrogen are

32.

The commonly used material for shielding is

33.

The main interest of shielding in nuclear reactor is protection against

34.

Reflector in nuclear plants is used to

35.

The energy required to be applied to a radioactive nucleus for the emission of a neutron is

36.

Which of the following are ferrite materials

37.

Ferrite material is

38.

Which of the following particles is the lightest

39.

Which of the following is the heaviest

40.

In fast breeder reactors

41.

In nuclear fission each neutron that causes fission releases

42.

The breeding gain in case of thermal breeder reactor as compared to fast breeder reactor is

43.

Gas cooled reactor uses following materials as moderator, and coolant

44.

A nuclear fission produces energy of following order in MeV

45.

The process by which a heavy nucleus is splitted into two light nuclei is known as

46.

A nuclear fission is initiated when the critical energy as compared to neutron binding energy of the atoms is

47.

The fast breeder reactor uses the following moderator

48.

The first unclear power plant in India is located at

49.

The nuclear power plant at Tarapur has the following reactor

50.

Boiling water reactor uses the following as moderator, coolant and working fluid

51.

Ideally the neutron flux in reactor should be

52.

Enriched uranium may contain fissionable contents of the order of

53.

U235 will undergo fission by

54.

U238 will undergo fission by

55.

A reactor capable of converting a ferrite material into fissile isotopes is called

56.

Hydrogen is preferred as better coolant in comparison to C02 because former

57.

Natural uranium is made up of

58.

Plutonium is produced

59.

Pick up the wrong statement

60.

Pick up the wrong statement Fast breeder reactors

61.

Plutonium-239 is produced

62.

Which of the following type of pump is used in liquid metal cooled reactor for circulation of liquid metal

63.

Which of the following is the primary fuel

64.

A pressurised water reactor employs pressuriser for the following application

65.

Which of the following can be used as a coolant in nuclear plant

66.

Reactors for propulsion applications use

67.

In triggering fission, which type of neutrons are more effective

68.

For economical operation of a nuclear plant

69.

The size of the reactor is said to be critical when

70.

When a reactor becomes critical, then the production of neutrons is

71.

In the breeder reactors the generation of new fissionable atom is

72.

The energy produced by a thermal reactor of same size as a breeder reactor is

73.

Supertheated steam is generated in following reactor

74.

Solid- fuel for nuclear reactions may be fabricated into various small shapes such as

75.

Which of the following is more appropriate for a moderator. One which

76.

A fission chain reaction in uranium can be developed by

77.

Effective moderators are those materials which contain

78.

In order to have constant clain reaction to produce a constant rate of heat output, the value of ratio of the number of neutrons in one generation to the number of neutrons in the immediately preceding generation must be

79.

A fast breeder reactor uses following as fuel

80.

A boiling water reactor uses following as fuel