2. Which of the following power plant can be easily started from cold conditions?
Correct : C. Diesel engine power plant
3. 100 MW Dhurva reactor is basically a
Correct : A. research reactor
4. Which of the following plant is suitable for peak load?
Correct : A. Diesel engine plant
5. Gas turbines are widely used in
Correct : B. Aircraft
6. The alternators for a steam power plant usually run at
Correct : A. 3000 rpm
7. Producer gas mainly contains
Correct : B. carbon monoxide and nitrogen
8. Which of the following equipment is installed in power plants to reduce air pollution due to smoke?
Correct : B. Electrostaric precipitators
9. The flicker effect of fluorescent lamps is more pronounced at
Correct : E. None of the above
10. Geologists believe that below the earth's crust, the molten mass exists in the form of
Correct : A. magma
11. Return to earth of the oxides of sulphur and nitrogen occurs in the form of
Correct : D. any of the above
12. ASTM coal classification is based on
Correct : A. proximate analysis
13. The phenomenon of physical adhesion of molecules to the surfaces of solids without chemical reaction is known as
Correct : C. adsorption
14. When a conductor is suspended between two supports at the same level it taken the shape of
Correct : E. Catenary
15. Which of the following plant can be conveniently located close to be load centre?
Correct : C. Diesel engine power plant
16. Fluidized bed combustion helps to reduce
Correct : C. both (A) and (B) above
17. Electrostatic precipitators are most effective on
Correct : D. fine dust
18. A 660 V cable is known as
Correct : D. Low tension cable
19. Which of the following public sector unit is engaged in the manufacture of thermal power plants?
Correct : D. Bharat Heavy Electricals Ltd
20. A layer of fibrous material like jute or hessian type provided over metallic sheath on a cable is known as
Correct : B. Bedding
21. In a long transmission line, the effect of
Correct : B. resistance, capacitance and inductance is taken into account
22. Which of the following short-circuit is the most dangerous?
Correct : B. Dead short circuit
23. Transient disturbances are due to
Correct : D. Any of the above
24. Which of the following power plant will give least running cost of the production of electrical power?
Correct : A. Nuclear power plant
25. Which of the following power plant is free from environmental pollution problems?
Correct : C. Hydro power plant
26. In a steam turbine cycle the lowest pressure occurs in
Correct : E. Condenser
27. Which of the following is not a high pressure boiler?
Correct : B. Lancashire coiler
28. TNT
Correct : D. trinitrotoluene
29. All of the following are heavy metals EXCEPT
Correct : B. Sodium
30. The characteristic impedance of transmission line depends upon
Correct : C. geometrical configuration of the conductor
31. A relay for protective system should have
Correct : E. All of the above
32. Beaufort scale is used to measure
Correct : B. wind speed
33. If K be the volume of conductor for two wire dc system, then for the same voltage the volume of conductor for 3 wire dc system for supplying the same load will be
Correct : D. 0.3125 K
34. The problem of ash handling does not exist in case of ------ fired boilers.
Correct : D. Gas
35. One BTU is the amount of energy required to raise the temperature of
Correct : B. One pound of water through 1?F
36. Which of the following material has the best conductivity?
Correct : C. Copper
37. The voltage of a 2 wire de system is raised from 200 V to 400 V. For the same power transmitted over the same distance and for the same power loss, the saving in conductor copper will be
Correct : A. 75%
38. Coal rank classifies coal according to its
Correct : C. degree of metamorphism
39. The capacity of generators being installed in super-thermal power plant is
Correct : E. 500 MW
40. The disadvantage of renewable sources of energy is
Correct : D. All of the above
41. Local winds are caused by
Correct : C. any of the above
42. Corona usually occurs when the electrostatic stress in the air around the conductor exceeds
Correct : A. 32 kV (maximum values)/cm
43. Exosphere is the space beyond the earth's atmosphere. It begins at a height of about
Correct : D. 1000 km
44. Which of the following power plant can be installed within the shortest possible time?
Correct : E. Diesel engine power plant
45. Hopkinson demand rate curve is a
Correct : B. two part tariff
46. API gravity is expressed in terms of
Correct : C. degrees
47. Which of the following is not the standard rating of GLS lamps in India?
Correct : B. 50 W
48. Thermal neutrons are
Correct : D. slow neutrons
49. Which of the following place is associated with thermal power plants?
Correct : A. Obra
50. Which of the following equipment can be used for improving the power factor ?
Correct : D. Any of the above
51. Illuminating gas is
Correct : B. coal and carburretted water gas
52. Deuterium oxide is used in nuclear reactors as
Correct : B. moderator
53. The advantage of dc transmission system over ac transmission system is
Correct : D. All of the above
54. In a medium transmission line the effect of
Correct : E. resistance, capacitance and inductance is taken into account
55. The presence of CO2 and H2O in the atmosphere results in absorption of
Correct : C. long wave infrared radiations
56. The calorific value of natural gas is expected to be around
Correct : B. 500 kcal/m3
57. The name DVC is associated with which type of power generation?
Correct : B. Hydro-electric
58. Which of the following gas is sometimes filled in filament lamps?
Correct : C. Argon
59. The heating value of coal largely depends on
Correct : E. Carbon content
60. Pulverised coal is
Correct : E. Coal broken into fine pieces
61. The skin effect of a conductor will reduce as
Correct : D. the resistivity of conductor material increases
62. The calorific value of diesel oil is expected to be around
Correct : E. 11000 kcal/kg
63. The expected life of wooden poles is
Correct : C. 15 years
64. The average cost of power per kWh for domestic consumers in India is
Correct : D. 50 to 65 paise
65. Betz law finds application in
Correct : D. Wind mills
66. When a 66 kV transmission line passes over a residential building, the minimum vertical clearance from the roof of the building must be
Correct : A. 4 metres
67. The highest voltage at which the power is transmitted in India is
Correct : D. 400 kV
68. Activated carbon is used for
Correct : A. absorption of gases
69. In any transmission line, which two generalised constants are equal?
Correct : C. A and D
70. In case of oil fired boiler, the excess air is usually
Correct : B. 5 to 12 percent
71. Watt second is the unit of
Correct : D. Energy
72. A metallic sheath is provided on cable
Correct : A. to protect against moisture, gases and other damaging liquids
73. The efficiency of a thermal power plant improves with
Correct : D. Use of high pressure steam
74. Which of the following is the advantage of de transmission?
Correct : E. All of the above
75. Burning of low grade fuels can be improved by
Correct : D. Any of the above
76. Which of the following is a natural solid fuel?
Correct : C. Bituminous coal
77. The power factor of a 3 phase induction motor near full load is expected to be around
Correct : D. 0.8 lagging
78. When geothermal energy is available in the form of saline water, power is developed using
Correct : D. any of the above
79. If an engine has spark plugs, it can be safely concluded that it is
Correct : C. not a diesel engine
80. No moving parts are required in
Correct : C. Thermionic conversion
81. The work of installation and commissioning of power plants in India is generally undertaken by
Correct : C. NTPC Ltd.
82. When the reactive component is small
Correct : D. the phase angle will be small and p.f. will be high
83. Which of the following colour has wavelength between green and red colour?
Correct : A. Yellow
84. Which of the following statement is correct?
Correct : C. Wind pressure is taken to act in a direction at right angles to that for ice
85. An Orsat apparatus gives
Correct : A. volumetric analysis
86. The specific gravity of copper is
Correct : E. 5.9
87. Conductors for high voltage transmission lines are suspended from towers
Correct : D. to take care of extension in length during summer
88. Economiser in a steam power plant is used
Correct : B. To preheat feed water
89. A pin type insulator is generally used upto
Correct : C. 33 kV
90. Naphtha is a volatile colourless product obtained from
Correct : D. petroleum
91. A 66 kV transmission line carrying power to a distance of 120 kilometre will be termed as
Correct : D. Medium transmission line
92. Solar cells are made of
Correct : A. silicon
93. In case the supply frequency is reduced from 50 Hz to 1 Hz which method of heating will be least affected?
Correct : A. Resistance heating
94. Bottoming cycle in case of combined cycle power geneation is normally
Correct : B. Steam cycle
95. The major disadvantage with solar cells for power generation is
Correct : D. high cost
96. Earth coal is
Correct : A. lignite
97. Barytes concrete is generally used in
Correct : A. nuclear power plants
98. The disadvantage of using solar evergy for power production is