1. When the power is to be transmitted over a distance of 580 km, the transmission voltage should be in the range
Correct : D. 150 kV - 200 kV
2. Geothermal energy is
Correct : D. any of the above
3. In a power plant, if the system voltage is dropped by 10 percent, the load will drop by about
Correct : C. 10 percent
4. A micro hydel project has
Correct : D. All of the above
5. Which of the following needs to be filtered in a diesel engine?
Correct : D. Air, diesel oil and lubricating
6. All of the following are hard coals EXCEPT
Correct : B. Lignite
7. For transmission lines the standing wave ratio is the ratio of
Correct : A. maximum foltage to minimum voltage
8. Reflecting mirrors for solar energy are known as
Correct : C. heliostats
9. Litz wire, is used for intermediate frequencies to overcome
Correct : B. skin effect
10. The insulators for overhead lines are generally made of
Correct : A. Porcelain
11. Which type of conductors are used for transmitting bulk of power at high voltage?
Correct : A. ACSR
12. The major constituent of natural gas is
Correct : D. Methane
13. Long distance electric trains take power on
Correct : B. 25 kV single phase ac
14. Wind form of power generation are being established at
Correct : D. all above places
15. Which lamp is used for cinerma projectors
Correct : A. Carbon arc lamp
16. A load curve is the relationship between load on power plant with the
Correct : C. time in chronological order
17. Heavy water is used in a nuclear power plant as a
Correct : E. Moderator
18. The power factor of a three phase induction motor at no load will be
Correct : C. 0.2 to 0.3 lagging
19. The power factor of a load of 100 kW is to be raised from 0.5 lagging to 0.9 lagging. The KVA rating of the capacitor will be
Correct : D. 125
20. One kilowatt hour is equal to
Correct : C. 860,000 calories
21. 1 kilowatt hour is the same as
Correct : D. 3600,000 watt-sec
22. A 11 kV transmission line carries power to a distance of 30 kilometres. This will be termed as
Correct : A. Short transmission line
23. The dielectric strength of rubber is about
Correct : B. 30 kV/m
24. ACSR conductor having 7 steel strands surrounded by 25 aluminium conductors will be specified as
Correct : C. 25?7
25. Compressed air is required in diesel engine power plants mainly for
Correct : A. Starting the engine
26. The chances of corona are maximum during
Correct : D. humid weather
27. The expected life of a GLS lamp is nearly
Correct : D. 1000 hours
28. Neglecting losses in a transmission system, if the voltage is doubled for the same power transmission, the weight of conductor material required will be
Correct : D. one-fourth
29. Skin effects is proportional to
Correct : C. (diameter of conductor)2
30. The thickness of the layer of insulation on a cable depends on
Correct : D. Voltage
31. Strain type insulators are used where the conductors are
Correct : C. any of the above
32. Coal used in power plants is also known as
Correct : D. Steam coal
33. The highest point on the load curve represents
Correct : B. Maximum demand
34. The voltage of a single solar cell is
Correct : A. 0.5 V
35. High horse power diesel engines are usually started by
Correct : B. Compressed air
36. In case of humic coals, hydrogen percentage varies from
Correct : A. 4 to 6 percent
37. Which of the following motor can operate on lagging as well as leading power factor?
Correct : A. Synchronous motor
38. A 200 MW generator will invariably be
Correct : A. Hydrogen cooled
39. Presence of non-condensable gases in geopressured water causes
Correct : D. All of the above
40. Which of the following place is not associated with nuclear power plants?
Correct : E. Bangalore
41. Pearlite is
Correct : C. an insulation material
42. The term 'critical' is associated with which type of power plant?
Correct : E. Nuclear power plant
43. Reverse capacity of a plants is given by
Correct : B. Plant capacity - Maximum demand
44. The standard wattage of 4 feet fluorescent tube is
Correct : D. 40 W
45. Standed conductors are used for transmitting power at high voltages because of
Correct : C. case in handling
46. In a transmission line if booster transformer is to be used, the preferred location will be
Correct : C. at the intermediate point
47. For the same wattage, which of the following lamp is cheapest?
Correct : B. GLS lamp
48. One British thermal unit (BTU) is nearly equal to
Correct : D. 1053 joules
49. At which of a following speed the generators for 3 phase, 50 Hz supply will not run?
Correct : A. 1200 rpm
50. The specific gravity of diesel oil is closer to
Correct : D. 0.84
51. Which type of insulators are used on 132 kV transmission lines?
Correct : B. Disc type
52. Gamma rays are
Correct : A. high energy, short wavelength electromagnetic radiation
53. Baume's scale measures
Correct : C. specific gravity of liquids
54. The depreciation rate for an equipment is generally decided in light of
Correct : C. Income tax rules
55. Which of the following is an advantage of using static capacitors of power factor improvement?
Correct : E. All of the above
56. Skin effects depends upon
Correct : D. All of the above
57. If a diesel engine has a turbochanger, it can be concluded that the engine is
Correct : D. Supercharged type
58. Which of the following factor affects corona?
Correct : E. All of the above
59. The function of steel wire in a ACSR conductor is
Correct : D. to provide additional mechanical strength
60. Which of the following method can be used for heating wood?
Correct : E. Dielectric heating
61. Sag is provided in overhead transmission lines so that
Correct : D. Safe tension is not exceeded
62. A chimney is not a part of which of the following type of power plant?
Correct : D. Hydro-electric power plant
63. Fixed carbon in case of biogas is around
Correct : A. 12.5 percent
64. the main cause of power loss in a transmission line is
Correct : A. Resistance
65. In hydrothermal systems when steam water and dissolved solids are available as source of energy, the entrained solids are removed by
Correct : B. centrifugal separators
66. Steel poles used for telephone lines are generally
Correct : C. galvanized
67. Raniganj is famous for
Correct : D. Coal
68. The chemical composition of coal is given by
Correct : B. Ultimate analysis
69. If 3 MW power is to be transmitted over a distance of 30 km, the desirable transmission voltage will be
Correct : B. 33 kV
70. The power factor of a 3 phase induction motor will be least
Correct : A. at no load
71. A 132 kV transmission line carrying power through a distance of 250 kilometers will be termed as
Correct : C. Long transmission line
72. In a hydroelectric plant a conduit-system for taking water from the intake work to the turbine is known as
Correct : A. Penstock
73. Most power generating units are conservatively rated. For short durations, these units can be easily overloaded by about
Correct : B. 10 to 15 percent
74. Therm is a unit of
Correct : B. heating value
75. In a fluorescent tube circuit, choke acts as a
Correct : D. A current limiting device
76. soot is virtually nothing but
Correct : D. carbon
77. Which of the following is not needed in megneto hydrodynamic power plants?
Correct : C. Steam turbine
78. A four stroke petrol engine is designed to develop 35 BHP at 200 RPM. It has an indicated mean effective pressure of 20 kg/cm2, a stroke of 35 cm and a bore diameter of 20 cm. Using this data mechanical efficiency of the engine at the running condition given would be closest to
Correct : C. 70 percent
79. Particles having the same atomic number but different mass unmbers are called
Correct : C. Isotopes
80. Careful handling of fuel is essential for which of the following power plant?
Correct : E. Nuclear power plant
81. High load factor can be expected in
Correct : D. base load stations
82. Flash generally results from
Correct : C. pulverized coal boilers
83. A load curve helps in deciding
Correct : D. All of the above
84. In any transmission line
Correct : A. ?BC = 1 - AD
85. The device used to generate power utilising energy of wind is called
Correct : C. Windmill
86. Pea coal is
Correct : A. anthracite coal, small in size
87. Air curtains find applications in
Correct : A. air conditioned spaces
88. A current of 10 milli-amperes through human body
Correct : A. will cause mild sensation
89. A curve showing the variation of load on a power station with respect to time is known as
Correct : C. Load curve
90. Nagarjunsagar dam has been constructed on river
Correct : B. Krishna
91. The location of which power plant is mainly decided by the geographical factors?
Correct : B. Hydro-electric power plant
92. In petrothermal systems of geothermal energy there is hot dry rock but no underground water. In such systems energy is obtained by
Correct : B. pumping water
93. A fast breeder reactor
Correct : B. operates with fast neutrons and produces more fissionable material than it consumes
94. The current down by the transmission line due to corona losses is
Correct : C. non-sinusoidal
95. In a transmission line following are the distributed parameters
Correct : C. resistance, inductance, capacitance and short conductance
96. The effect of ice deposition on conductor is
Correct : C. increased weight
97. Illumination due to moonlight is nearly
Correct : C. 0.3 lumen/meter2
98. Which of the following place is not associated with hydro-electric power plants?
Correct : D. Singrauli
99. The speed of the primemover is controlled by
Correct : D. governor
100. The expected life of wooden pols for transmission line is