MCQOPTIONS
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MCQOPTIONS
This section includes 180 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Size and cost of installation depends upon |
| A. | average load |
| B. | maximum demand |
| C. | square mean load |
| D. | square of peak load |
| Answer» C. square mean load | |
| 52. |
During which time the demand of electrical energy is maximum? |
| A. | 2 a.m. to 5 a.m. |
| B. | 5 a.m. to 12 p.m. |
| C. | 12 p.m. to 7 p.m. |
| D. | 7 p.m. to 9 p.m |
| Answer» E. | |
| 53. |
Load duration curve indicates |
| A. | the variation of load during different hours of the day |
| B. | total number of units generated for the given demand |
| C. | total energy consumed by the load |
| D. | the number of hours for which the particular load lasts during a day |
| Answer» E. | |
| 54. |
Which of the following is equal to the maximum demand? |
| A. | the ratio of area under curve to the total area of rectangle |
| B. | the ratio of area under curve and number of hours |
| C. | the peak of the load curve |
| D. | the area under the curve |
| Answer» D. the area under the curve | |
| 55. |
The area under the load curve represents |
| A. | the average load on power system |
| B. | maximum demand |
| C. | number of units generated |
| D. | load factor |
| Answer» D. load factor | |
| 56. |
How much is the efficiency of geothermal plant? |
| A. | 28% |
| B. | 15% |
| C. | 42% |
| D. | 30% |
| Answer» C. 42% | |
| 57. |
Which kind geothermal plant is most common type? |
| A. | dry steam |
| B. | flash |
| C. | binary |
| D. | wet steam |
| Answer» C. binary | |
| 58. |
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 | |
| 59. |
The hole on earth’s surface from where the steam from the earth comes out is called as |
| A. | gash |
| B. | mud pot |
| C. | void |
| D. | fumarole |
| Answer» E. | |
| 60. |
Earth’s outer layer rock is called as |
| A. | mantle |
| B. | crust |
| C. | outer core |
| D. | asthenosphere |
| Answer» C. outer core | |
| 61. |
A geothermal solution containing appreciable amounts of sodium chloride or other salts is called as |
| A. | fluids |
| B. | brine |
| C. | solvent |
| D. | magma |
| Answer» C. solvent | |
| 62. |
Who invented first geothermal plant? |
| A. | michael faraday |
| B. | piero ginori conti |
| C. | enrico fermi |
| D. | guglielmo marconi |
| Answer» C. enrico fermi | |
| 63. |
What is hot molten rock called? |
| A. | lava |
| B. | magma |
| C. | igneous rocks |
| D. | volcano |
| Answer» C. igneous rocks | |
| 64. |
What does EGS stand for in geothermal energy? |
| A. | engraved geothermal systems |
| B. | enhanced geothermal system |
| C. | exhaust gas system |
| D. | engineered geo physical system |
| Answer» C. exhaust gas system | |
| 65. |
How much is the average temperature at depth of 10 km of earth surface? |
| A. | 200oc |
| B. | 900oc |
| C. | 650oc |
| D. | 20oc |
| Answer» B. 900oc | |
| 66. |
What is the function of booms? |
| A. | it supports the dam |
| B. | it supports the penstock |
| C. | it divert the icebergs from flowing into the penstock |
| D. | to hold the turbine structure |
| Answer» B. it supports the penstock | |
| 67. |
Which statement about surge tank is wrong? |
| A. | ideal location of surge tank is at the turbine inlet |
| B. | a decrease in load demands cause a rise in water level in surge tank |
| C. | surge tanks are totally closed to avoid entry of unwanted objects to penstock |
| D. | surge tanks are installed to reduce harm effects of water hammer phenomenon |
| Answer» D. surge tanks are installed to reduce harm effects of water hammer phenomenon | |
| 68. |
Trash racks are located |
| A. | near tailrace |
| B. | at the entrance of turbine |
| C. | inside penstock |
| D. | intake |
| Answer» E. | |
| 69. |
Draft tube increases the operating head on the turbine. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 70. |
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 | |
| 71. |
Penstock in a hydroelectric power plant is |
| A. | a pipe connected to runner outlet |
| B. | nozzle that release high pressure water on turbine blades |
| C. | a conduit connecting forebay to scroll case of turbine |
| D. | a pipe connecting surge tank to dam |
| Answer» D. a pipe connecting surge tank to dam | |
| 72. |
The use of nuclear energy in the war had devastating effects on humans and on the earth. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 73. |
Trash racks are built for |
| A. | discharging the water freely from the turbine exit to tailrace |
| B. | preventing the turbine from ingress of floating and other materials |
| C. | creating artificial head to store sufficient potential energy of water |
| D. | controlling the opening of valves |
| Answer» C. creating artificial head to store sufficient potential energy of water | |
| 74. |
Spillway discharges the overflow water to the downstream side when the reservoir is full. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 75. |
Approximately how many percentage of electricity produced by nuclear power in the world? |
| A. | 10 |
| B. | 14 |
| C. | 17 |
| D. | 20 |
| Answer» D. 20 | |
| 76. |
What is the main purpose of nuclear energy? |
| A. | to kill the enemy nation |
| B. | to waste the excessive energy |
| C. | to use it as an alternate source of energy |
| D. | to cause mutation for people who are working |
| Answer» D. to cause mutation for people who are working | |
| 77. |
Which State in India nuclear accident took place? |
| A. | tamil nadu |
| B. | karnataka |
| C. | gujarat |
| D. | rajasthan |
| Answer» B. karnataka | |
| 78. |
Which one of the following medical condition caused by the high exposure of radiation? |
| A. | kidney stone |
| B. | aids |
| C. | mutation |
| D. | blood pressure |
| Answer» D. blood pressure | |
| 79. |
Thermal shield is used in high powered nuclear reactors to |
| A. | absorb the fast neutrons |
| B. | protect the walls of the reactor from radiation damage |
| C. | slow down the secondary neutrons |
| D. | protect the fuel element from coming in contact with the coolant |
| Answer» C. slow down the secondary neutrons | |
| 80. |
Nuclear energy is only harmful. |
| A. | true |
| B. | false |
| Answer» C. | |
| 81. |
How many percentage of fissionable U-235 |
| A. | 0.1% |
| B. | 0.5% |
| C. | 0.7% |
| D. | 1.5% |
| Answer» D. 1.5% | |
| 82. |
Which was the first country to develop an atomic bomb? |
| A. | russia |
| B. | united states |
| C. | china |
| D. | japan |
| Answer» C. china | |
| 83. |
Commercial power generation from fusion reactor is not yet possible, because |
| A. | it is difficult to initiate fusion reaction |
| B. | the fuel required (e.g. deuterium and tritium) is scarce |
| C. | it is difficult to control fusion reaction |
| D. | quantity of fuel required for initiating fusion reaction is prohibitively high |
| Answer» D. quantity of fuel required for initiating fusion reaction is prohibitively high | |
| 84. |
Where was the first control fission of an atom carried out? |
| A. | india |
| B. | japan |
| C. | russia |
| D. | germany |
| Answer» E. | |
| 85. |
A boiling water reactor is the one, in which the |
| A. | pressurised water is pumped into the core. |
| B. | coolant water, after being heated in the reactor core, generates steam in a boiler |
| C. | fuel and the coolant are thoroughly mixed to form a homogeneous solution |
| D. | coolant water is allowed to boil in the core of the reactor |
| Answer» E. | |
| 86. |
Fast breeder reactors do not |
| A. | use molten sodium as coolant |
| B. | use fast neutrons for fission |
| C. | use th-232 as fissile fuel |
| D. | convert fertile material to fissile material |
| Answer» D. convert fertile material to fissile material | |
| 87. |
One amu is equivalent to? |
| A. | 931 mev |
| B. | 93.1 ev |
| C. | 9.31 ev |
| D. | 931 j |
| Answer» B. 93.1 ev | |
| 88. |
Which of the following is not a naturally occurring nuclear fuel? |
| A. | uranium-238 |
| B. | thorium-233 |
| C. | plutonium-239 |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 89. |
Which of the following may not need a moderator? |
| A. | candu reactor |
| B. | fast breeder reactor |
| C. | homogeneous reactor |
| D. | none of the mentioned |
| Answer» C. homogeneous reactor | |
| 90. |
Nuclear plant is located near the area where cooling water is available. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 91. |
Which reactor uses orthometaerhenyl and paratherphenyl as coolant and moderator? |
| A. | liquid metal fast breeder reactor |
| B. | gas cooled fast breeder reactor |
| C. | organic substance cooled reactor |
| D. | candu heavy water reactor |
| Answer» D. candu heavy water reactor | |
| 92. |
Which of the following may be used to measure the rate of nuclear disintegration? |
| A. | geiger-muller counter |
| B. | cold chamber |
| C. | cyclotron |
| D. | van de graph generator |
| Answer» B. cold chamber | |
| 93. |
Using Helium gas in GCFBR has many advantages. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 94. |
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 | |
| 95. |
What is acronym of LMFBR? |
| A. | liquid molecular fast boiling reactor |
| B. | liquid metal fast breeder reactor |
| C. | liquefied metal fast boiling reactor |
| D. | liquid metal fast boiling reactor |
| Answer» C. liquefied metal fast boiling reactor | |
| 96. |
Which reactor consists of both fertile and fissile material? |
| A. | fast breeder reactor |
| B. | pressurize water reactor |
| C. | boiling water reactor |
| D. | converter reactor |
| Answer» B. pressurize water reactor | |
| 97. |
CANDU stands for |
| A. | canadian natural darmstadtium uranium |
| B. | canadian natural deuterium uranium |
| C. | canadian natural dubnium uranium |
| D. | canadian natural dysprosium uranium |
| Answer» C. canadian natural dubnium uranium | |
| 98. |
Which country invented CANDU heavy water reactor? |
| A. | canada |
| B. | germany |
| C. | russia |
| D. | bolivia |
| Answer» B. germany | |
| 99. |
How many types of Boiling water reactor cycles are there? |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» C. 4 | |
| 100. |
In which reactor is the coolant in direct contact with the heat producing nuclear fuel? |
| A. | fast breeder reactor |
| B. | pressurized water reactor |
| C. | boiling water reactor |
| D. | heavy water reactor |
| Answer» D. heavy water reactor | |