5. The fact that a conductor carries more current on the surface as compared to core is known as
Correct : A. skin effect
6. Diesel engine fuels are rated by
Correct : B. Cetane number
7. Which of the following area is preferred for solar thermal electric power plants?
Correct : B. Hot arid zones
8. The wavelength of green colour is nearly
Correct : B. 5500 A
9. A module is a
Correct : B. series - parallel arrangement of solar cells
10. Lighite is
Correct : C. low calorific value coal
11. The disadvantage of transmission lines as compared to cables is
Correct : D. All of the above
12. During storm the live conductor of public electric supply breaks of down and touches the earth. The consequence will be
Correct : C. current will flow to earth
13. Photovoltaic solar energy conversion system makes use of
Correct : B. solar cells
14. A photovoltaic cell converts
Correct : C. solar energy into electrical energy
15. The average load factor of thermal power plants in India is
Correct : B. 50 to 60%
16. The bundling of conductors is done primarily to
Correct : A. reduce reactance
17. Excess air requirement is more in case of
Correct : A. chain grate stokers
18. Which of the following is heavy oil?
Correct : D. Bunker oil
19. Hyperon has mass
Correct : A. greater than that of a proton and less than that of a deuteron
20. A ship is powered by
Correct : E. Steam turbines or diesel engines
21. A gas turbine works on
Correct : C. Brayton cycle
22. Maximum permissible span for wooden poles is
Correct : A. 60 metres
23. Which of the following process is used for the production of alcohol?
Correct : D. Fermentation
24. The effect of corona is
Correct : A. increased energy loss
25. Solvent refined coal has low percentage of
Correct : D. All of the above
26. Grade of the coal is the same as
Correct : D. rank
27. Winds caused by greater solar heating of the earth's surface near the equator than near the northern or southern poles, are known as
Correct : C. planetary winds
28. One barrel is nearly
Correct : C. 0.16 cubic metre
29. Solid or liquid particles of microscopic size which are suspended in air or another gas from what is known as
Correct : A. aerosol
30. The live storage of coal in power plant means
Correct : B. Storage of coal sufficient to meet hour demand for the plant.
31. Under no load conditions the current in a transmission line is due to
Correct : B. capacitance of the line
32. The maximum number of generators in a power plant must be
Correct : A. Two
33. The area under the load curve represents
Correct : D. Energy consumed
34. All of the following are electrical mechanical storage systems EXCEPT
Correct : C. super conducting coils
35. Thermal storage of energy is possible in the form of
Correct : D. Any of the above
36. Out of the following which one is not a unconventional source of energy?
Correct : B. Nuclear energy
37. In which of the following state manufacturing unit of M/S Bharat Heavy Electricals Ltd. Is not located?
Correct : A. Rajasthan
38. The value of an equipment at the end of its useful life is known as
Correct : D. Scrap value
39. The effect of electric shock on human body depends on
Correct : D. All of the above
40. Which of the following will need the lower level of illumination?
Correct : B. Railway platform
41. The calorific value of coal gas is expected to be around
Correct : D. 7500 kcal/m3
42. A super-thermal power station has
Correct : A. total generating capacity of over 2000 MW
43. A jet aircraft is powered by
Correct : D. Gas turbine
44. pF number refers to
Correct : B. energy with which water is held in the soil
45. All of the following plants are suitable for peak load EXCEPT
Correct : D. Nuclear power plant
46. One calorie is the same as
Correct : A. 4.18 joules
47. Liquids lighter than water (such as petroleum oils) have API gravities numerically
Correct : A. less than 1.0
48. Most of the thermal power plants in India are using
Correct : C. pulverized fuel
49. The percentage of carbon in anthracite is generally
Correct : A. more than 90%
50. Wooden poles for supporting transmission lines are used for voltages upto
Correct : C. 22 kV
51. Death is almost certain when the current through human body is
Correct : A. 100 milli-amperes
52. API gravity of water is taken as
Correct : B. 1
53. Which of the following power plant can generate power at unpredictable or uncontrolled times?
Correct : D. All of the above
54. Turnaround efficiency of pumped hydro schemes seldom exceeds
Correct : D. 65%
55. Standby losses are least in case of
Correct : C. Hydro-electric power plant
56. Approximately how many kg of air are required for the combustion of one kg of diesel oil?
Correct : A. 15 kg
57. Which of the following variety of coal will have highest ash content
Correct : E. Lignite
58. The effect of wind pressure is more predominant on
Correct : D. supporting towers
59. Argillaceous rocks have
Correct : A. high clay content
60. Beaufort scale is graded from 0 to
Correct : B. 12
61. In hydrothermal source of geothermal energy
Correct : A. hot water or steam is available
62. Presence of ozone as a result of corona is harmful because
Correct : B. it corrodes the material
63. The source of energy for satellite is
Correct : B. solar cell
64. Which type of power plant will be preferred for a location in Bihar?
Correct : C. Thermal power plant
65. Petrothermal systems are composed of hot dry rock with
Correct : A. no underground water
66. The tax imposed on power supplied to consumers is known as
Correct : D. electricity duty
67. The maximum theoretical efficiencies of solar cells could be around
Correct : C. 48%
68. Heavy water production plants in India are located at all the following places EXCEPT
Correct : B. Bombay
69. Presence of sand in geopressured water is likely to cause problems of
Correct : D. All of the above
70. Highly skilled manpower is needed for the maintendance of which of the following power plants?
Correct : C. Nuclear power plant
71. The power loss in an overhead transmission line is mainly due to
Correct : A. Line resistance
72. Benefication process is mainly used for
Correct : A. coals
73. For a 66 kV transmission line having span of 200 metres between towers, the approximate sag will be
Correct : C. 2 m
74. Which of following converts thermal energy to kinetic energy?
Correct : D. Rocket
75. A 3 phase 15 kW induction motor has a p.f. of 0.75 lagging. A bank of capacitor is connected in delta across the supply terminals and p.f. raised to 0.9 lagging. The KVAR rating of the capacitors connected in each phase will be nearly
Correct : D. 2
76. First aid for an electric shock victim is
Correct : B. Artificial respiration
77. A turbocharger is a part of
Correct : C. Diesel engine power plant
78. Capacity factor and load factor become identical when
Correct : A. peak load is equal to the capacity of the plant
79. The insulation material for a cable should have
Correct : E. All of the above
80. Marsh gas is
Correct : D. same as methane
81. The main advantage of ac transmission system over dc transmission system is
Correct : D. less losses in transmission over long distances
82. In geopressured systems, when brine is available as the source of energy, the power is generated using
Correct : A. heat exhangers
83. Stability of a system is least affected by
Correct : B. losses
84. Steam pressure of super-thermal power plant is
Correct : D. 170 kg/cm2
85. While top surface of an overfeed stoker consists of
Correct : C. green coal, incandescent coke
86. The minimum clearance of low and medium transmission lines from ground across streets is
Correct : C. 6 metres
87. The minimum demand on a power station is 10 MW. If the annular load factor is 40%, total evergy generated per year will be
Correct : C. 35.04 x 106 kWh
88. Spot the odd one out
Correct : D. Bark
89. Ebb current is
Correct : B. the movement of the tidal current away from shore or down a tidal stream
90. The area under load curve divided by maximum demand represents
Correct : E. None of the above
91. Which of the following enters the super heater of a boiler?
Correct : D. Dry steam
92. In a diesel engine the governor controls
Correct : C. fuel flow rate
93. Which arrangement of poles is used for the installation of transformers and circuit breakers?
Correct : C. H type
94. Single peak in the load curve means
Correct : D. low load factor
95. Of all the different types of conventional power plants, technological advancements are maximum in
Correct : D. nuclear power plants
96. Heliochemical process is the process by which
Correct : A. solar energy is utilized through photosynthesis
97. The cost of fuel is least in case of
Correct : E. Hydro-electric power plant
98. Due to burning of one kg of pure carbon with a minimum quantity of air required, the percentage of carbondioxide in the exhaust gases would be
Correct : C. 29%
99. Sour crude
Correct : D. All of the above
100. In a boiler, the carry over of slugs of water into the piping due to dirty water is termed as