MCQOPTIONS
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MCQOPTIONS
This section includes 317 Mcqs, each offering curated multiple-choice questions to sharpen your ENGINEERING SERVICES EXAMINATION (ESE) knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Cost of nuclear fuel in nuclear power plant economics is considered as |
| A. | running cost |
| B. | maintenance cost |
| C. | capital cost |
| D. | development cost |
| Answer» D. development cost | |
| 52. |
Operating cost of nuclear power plant is less than thermal power plant. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 53. |
Absorption of radioactive element by human, affects their offspring’s. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 54. |
A spring that shoots jets of hot water and steam into the air is called as |
| A. | mine hole |
| B. | geyser |
| C. | hot spring |
| D. | mud pot |
| Answer» C. hot spring | |
| 55. |
How many percentage of fissionable U-235 |
| A. | 0.1% |
| B. | 0.5% |
| C. | 0.7% |
| D. | 1.5% |
| Answer» D. 1.5% | |
| 56. |
The pressure at the inlet or exit of the draft tube should not be |
| A. | less than one third of atmospheric pressure |
| B. | greater than one third of atmospheric pressure |
| C. | less than one atmospheric pressure |
| D. | greater than one atmospheric pressure |
| Answer» B. greater than one third of atmospheric pressure | |
| 57. |
GCFBR stands for |
| A. | gas conditioned fast breeder reactor |
| B. | gas cooled fast breeder reactor |
| C. | gas conditioned fast boiling reactor |
| D. | gas cooled fast breeder reactor |
| Answer» C. gas conditioned fast boiling reactor | |
| 58. |
The land area required for installation of nuclear power plant is |
| A. | more than thermal power plant |
| B. | less than thermal power plant |
| C. | equel to thermal power plant |
| D. | depends on type of construction |
| Answer» D. depends on type of construction | |
| 59. |
U238 will undergo fission by |
| A. | igh energy (fast) neutrons alone |
| B. | ow energy (slow) neutrons alone |
| C. | ither fast or slow neutrons |
| D. | edium energy neutrons |
| Answer» B. ow energy (slow) neutrons alone | |
| 60. |
U235 will undergo fission by |
| A. | igh energy (fast) neutrons alone |
| B. | ow energy (slow) neutrons alone |
| C. | ither fast or slow neutrons |
| D. | edium energy neutrons |
| Answer» D. edium energy neutrons | |
| 61. |
Plutonium is produced |
| A. | s basic raw material |
| B. | y neutron irradiation of Uz |
| C. | y neutron irradiation of thorium |
| D. | rtificially |
| Answer» C. y neutron irradiation of thorium | |
| 62. |
Reflector in nuclear plants is used to |
| A. | eturn the neutrons back into the core |
| B. | hield the radioactivity completely |
| C. | heck pollution |
| D. | onserve energy |
| Answer» B. hield the radioactivity completely | |
| 63. |
A nuclear fission produces energy of following order in MeV |
| A. | 0 |
| B. | 00 |
| C. | 000 |
| D. | 0,000 |
| Answer» C. 000 | |
| 64. |
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» B. Control fuel consumption | |
| 65. |
Amongst the following, the fissionable materials are |
| A. | U₂₃₃ and Pu₂₂₉ |
| B. | U₂₃₁ and Pu₂₃₃ |
| C. | U₂₃₅ and Pu₂₃₅ |
| D. | U₂₃₈ and Pu₂₃₉ |
| Answer» B. U₂₃₁ and Pu₂₃₃ | |
| 66. |
Gas cooled reactor uses following materials as moderator, and coolant |
| A. | Graphite, CO2 |
| B. | Graphite, air |
| C. | Heavy water, CO2 |
| D. | Lead, H2 |
| Answer» B. Graphite, air | |
| 67. |
Boiling water reactor uses the following as moderator, coolant and working fluid |
| A. | Ordinary fluid |
| B. | Heavy water |
| C. | Molten lead |
| D. | Hydrogen gas |
| Answer» B. Heavy water | |
| 68. |
Isotopes of same elements have |
| A. | Same atomic number and different masses |
| B. | Same chemical properties but different atomic numbers |
| C. | Different masses and different atomic numbers |
| D. | Different chemical properties and same atomic numbers |
| Answer» C. Different masses and different atomic numbers | |
| 69. |
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» B. Moderator should be used | |
| 70. |
A moderator, apart from its high neutron slowing power, and low non-productive neutron, should be |
| A. | Stable under nuclear radiation |
| B. | Corrosion resistant |
| C. | Good thermal conductor |
| D. | All of these |
| Answer» E. | |
| 71. |
Which of the following are ferrite materials? |
| A. | U₂₃₃ and Pu₂₃₉ |
| B. | U |
| C. | U₂₃₈ and Pu₂₃₉ |
| D. | U₂₃₈ and Th₂₃₉ |
| Answer» C. U₂₃₈ and Pu₂₃₉ | |
| 72. |
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» B. Absorbs neutrons | |
| 73. |
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» E. | |
| 74. |
In order to have constant chain 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 |
| A. | Greater than 1.0 |
| B. | Less than 1.0 |
| C. | Equal to zero |
| D. | Equal to 1.0 |
| Answer» E. | |
| 75. |
Fast breeder reactor uses |
| A. | Boiler |
| B. | Direct cycle of coolant system |
| C. | Double circuit system of coolant cycle |
| D. | Multi passes system |
| Answer» D. Multi passes system | |
| 76. |
A fast breeder reactor uses |
| A. | 90% U₂₃₅ |
| B. | U₂₃₈ |
| C. | U₂₃₅ |
| D. | Pu₂₃₉ |
| Answer» B. U₂₃₈ | |
| 77. |
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» E. | |
| 78. |
The fuel needed, with reflector in nuclear power plant, in order to generate sufficient neutrons to sustain a chain reaction, would be |
| A. | More |
| B. | Less |
| C. | Same |
| D. | Zero |
| Answer» C. Same | |
| 79. |
Effective moderators are those materials which contain |
| A. | Light weight atoms |
| B. | Heavy weight atoms |
| C. | Critical atoms |
| D. | Zero weight atoms |
| Answer» B. Heavy weight atoms | |
| 80. |
The efficiency of a nuclear power plant in comparison to a conventional thermal power plant is |
| A. | Same |
| B. | More |
| C. | Less |
| D. | May be less or mote depending on size |
| Answer» D. May be less or mote depending on size | |
| 81. |
Pressurized 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» E. | |
| 82. |
A moderator |
| A. | Absorbs neutrons |
| B. | Does not absorb neutrons |
| C. | Accelerates neutrons |
| D. | None of these |
| Answer» C. Accelerates neutrons | |
| 83. |
The coolant used in boiling water reactor is |
| A. | CO2 |
| B. | Pressurised water |
| C. | Mixture of water and steam |
| D. | Liquid metal |
| Answer» D. Liquid metal | |
| 84. |
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» E. | |
| 85. |
In triggering fission, which types of neutrons are more effective? |
| A. | Fast |
| B. | Slow |
| C. | In bulk |
| D. | Static |
| Answer» C. In bulk | |
| 86. |
Enriched uranium is required as a fuel in a nuclear reactor, if light water is used as moderator and coolant, because light water has |
| A. | High neutron absorption cross-section |
| B. | Low moderating efficiency |
| C. | High neutron scatter cross-section |
| D. | Low neutron absorption cross-section |
| Answer» C. High neutron scatter cross-section | |
| 87. |
Each fission of U₂₃₅ produces on the average _________ fast neutrons as a product of reaction. |
| A. | 2.46 |
| B. | 24.6 |
| C. | 246 |
| D. | 2460 |
| Answer» B. 24.6 | |
| 88. |
One gram of uranium will produce energy equivalent to approximately |
| A. | 1 tonne of high grade coal |
| B. | 4.5 tonnes of high grade coal |
| C. | 10 tonnes of high grade coal |
| D. | 100 tonnes of high grade coal |
| Answer» C. 10 tonnes of high grade coal | |
| 89. |
The unit of radioactivity is |
| A. | Electron volt |
| B. | Electron ampere |
| C. | Curie |
| D. | MV |
| Answer» D. MV | |
| 90. |
Reflector in nuclear power plants _________ neutron leakage. |
| A. | Increases |
| B. | Decreases |
| C. | Have no effect on |
| D. | None of these |
| Answer» C. Have no effect on | |
| 91. |
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» B. Control the reaction | |
| 92. |
Which of the following particles is the lightest? |
| A. | Nucleus |
| B. | Electron |
| C. | Proton |
| D. | Meson |
| Answer» C. Proton | |
| 93. |
Which of the following is the heaviest? |
| A. | Neutron |
| B. | Proton |
| C. | Atom |
| D. | Electron |
| Answer» D. Electron | |
| 94. |
The material most commonly used for shielding is |
| A. | Carbon |
| B. | Lead |
| C. | Concrete |
| D. | All of these |
| Answer» D. All of these | |
| 95. |
The commonly used material for shielding is |
| A. | Lead or concrete |
| B. | Lead and tin |
| C. | Graphite or cadmium |
| D. | Thick galvanized sheets |
| Answer» B. Lead and tin | |
| 96. |
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 neutron |
| Answer» E. | |
| 97. |
The most practical fuel for a thermonuclear reactor, both from economical and nuclear consideration is |
| A. | Plutonium |
| B. | Uranium |
| C. | Deuterium |
| D. | Thorium |
| Answer» D. Thorium | |
| 98. |
A nuclear fission is initiated when the critical energy as compared to neutron binding energy of the atoms is |
| A. | Same |
| B. | More |
| C. | Less |
| D. | There is no such criterion |
| Answer» C. Less | |
| 99. |
The predominant isotope of the naturally occurring element is |
| A. | U₂₃₅ |
| B. | U₂₃₈ |
| C. | Pu₂₃₃ |
| D. | Pu₂₃₉ |
| Answer» C. Pu₂₃₃ | |
| 100. |
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» C. Fusion | |