1. 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
2. First aid for an electric shock victim is
Correct : A. Artificial respiration
3. A turbocharger is a part of
Correct : C. Diesel engine power plant
4. Steam pressure of super-thermal power plant is
Correct : E. 170 kg/cm2
5. Which of the following enters the super heater of a boiler?
Correct : C. Dry steam
6. The cost of fuel is least in case of
Correct : E. Hydro-electric power plant
7. 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 : E. 29%
8. The useful life of static capacitor can be expected to be
Correct : B. 8 to 10 years
9. One kilowatt hour is nearly equal to
Correct : D. 3400 B.T.U.
10. The critical pressure water is
Correct : C. More than 200 kg/cm2
11. A single unit of 50 MW is generally not available with which type of power plant?
Correct : B. Diesel engine power plant
12. Most of the generators in thermal power plants run at
Correct : B. 3000 rpm
13. Which of the following state in India is relatively rich in coal deposits?
Correct : D. Bihar
14. Least overall efficiency can be expected in which type of power plant?
Correct : D. Steam power plant
15. Which of the following engine has the highest air-fuel ratio?
Correct : D. Gas turbine
16. Visible spectrum of light has wavelength in the range
Correct : B. 4000 to 7000 A
17. Which of the following equipment has power factor closer to unity
Correct : E. GLS lamp
18. Which of the following power plant has the highest cost per kW installed?
Correct : A. Nuclear power plant
19. Power factor is expected to be highest in case of
Correct : E. GLS lamp
20. The major share of power in India is provided by which of the following type of power plant?
Correct : D. Steam power plant
21. A generating station is to supply four regions of loads with peak demands of 10 MW, 15 MW, 20 MW and 30 MW. If the diversity factor is 1.5 the maximum demand on the station is
Correct : C. 50 MW
22. The permissible pH value of water of boilers is
Correct : E. Slightly more than 7
23. For extinguishing electrical fires
Correct : B. Carbon tetrachloride fire extinguisher should be used
24. In pumped storage plant
Correct : B. Downstream water is pumped upstream during off-load periods
25. A graphical representation of discharge and time is known as
Correct : B. Hydrograph
26. In a diesel engine, the consumption of diesel oil per BHP per hour is nearly
Correct : E. 200 grams
27. The formula for Cetane is
Correct : D. C16H34
28. The vacuum inside a incandescent lamp is of the order of
Correct : C. 10-4 mm Hg
29. When pulverised fuel is not used the equipment used for feeding coal to the boiler is
Correct : B. Stoker
30. The specific gravity of aluminium is
Correct : C. 2.71
31. The illumination level in the houses is usually in the range
Correct : D. 100 to 1400 lumens/m2
32. For under water movement of a submarine the power is provided by
Correct : A. Batteries
33. Which of the following is considered to be superior quality coal for power plants?
Correct : E. Bituminous coal
34. The string efficiency in an ac system is
Correct : A. 100%
35. For low head and high discharge the hydraulic turbine preferred is
Correct : B. Kaplan turbine
36. The initial cost of an equipment is Rs. 20 lakhs and depreciated cost after ten years is Rs. 15 lakhs. The useful life of the equipment is
Correct : C. Cannot be determined on the basis of the information provided
37. Which of the following domestic utility item consumes maximum power?
Correct : D. Cooking range
38. Satellites are powered by
Correct : B. Solar cells
39. The calorific value of lignite is expected to be around
Correct : C. 5000 kcal/kg
40. Diesel locomotives in India are manufactured at
Correct : B. Varanasi
41. Which of the following needs to be filtered in a diesel engine?
Correct : D. Air, diesel oil and lubricating
42. The insulators for overhead lines are generally made of
Correct : E. Porcelain
43. The major constituent of natural gas is
Correct : B. Methane
44. Long distance electric trains take power on
Correct : D. 25 kV single phase ac
45. Which lamp is used for cinerma projectors
Correct : A. Carbon arc lamp
46. Heavy water is used in a nuclear power plant as a
Correct : C. Moderator
47. The power factor of a three phase induction motor at no load will be
Correct : B. 0.2 to 0.3 lagging
48. 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 : A. 125
49. One kilowatt hour is equal to
Correct : C. 860,000 calories
50. 1 kilowatt hour is the same as
Correct : E. 3600,000 watt-sec
51. The expected life of a GLS lamp is nearly
Correct : D. 1000 hours
52. The thickness of the layer of insulation on a cable depends on
Correct : C. Voltage
53. Coal used in power plants is also known as
Correct : D. Steam coal
54. High horse power diesel engines are usually started by
Correct : B. Compressed air
55. Which of the following motor can operate on lagging as well as leading power factor?
Correct : D. Synchronous motor
56. A 200 MW generator will invariably be
Correct : B. Hydrogen cooled
57. Which of the following place is not associated with nuclear power plants?
Correct : B. Bangalore
58. The term 'critical' is associated with which type of power plant?
Correct : B. Nuclear power plant
59. The standard wattage of 4 feet fluorescent tube is
Correct : E. 40 W
60. For the same wattage, which of the following lamp is cheapest?
Correct : D. GLS lamp
61. One British thermal unit (BTU) is nearly equal to
Correct : A. 1053 joules
62. At which of a following speed the generators for 3 phase, 50 Hz supply will not run?
Correct : D. 1200 rpm
63. The specific gravity of diesel oil is closer to
Correct : B. 0.84
64. If a diesel engine has a turbochanger, it can be concluded that the engine is
Correct : A. Supercharged type
65. Which of the following method can be used for heating wood?
Correct : D. Dielectric heating
66. In a hydroelectric plant a conduit-system for taking water from the intake work to the turbine is known as
Correct : E. Penstock
67. Particles having the same atomic number but different mass unmbers are called
Correct : C. Isotopes
68. Careful handling of fuel is essential for which of the following power plant?
Correct : D. Nuclear power plant
69. In any transmission line
Correct : E. ?BC = 1 - AD
70. A curve showing the variation of load on a power station with respect to time is known as
Correct : A. Load curve
71. Nagarjunsagar dam has been constructed on river
Correct : B. Krishna
72. The location of which power plant is mainly decided by the geographical factors?
Correct : D. Hydro-electric power plant
73. Illumination due to moonlight is nearly
Correct : B. 0.3 lumen/meter2
74. Which of the following place is not associated with hydro-electric power plants?
Correct : B. Singrauli
75. The expected life of wooden pols for transmission line is
Correct : D. 20 to 25 years
76. Solar cells are made of
Correct : C. Silica
77. A tidal power plant is being installed in India near
Correct : C. Gulf of Cambay
78. Water is fed to the boiler at
Correct : E. At pressure more than the steam pressure
79. Phase, advancers for power factor improvement are generally used for
Correct : A. Induction motors below 200 HP
80. The pressure of steam used in modern thermal power plants is upto
Correct : D. 170 kg/cm2
81. The supply and distribution of electrical energy in states is controlled by
Correct : C. Electricity Board
82. As compared to copper, the conductivity of aluminium is nearly
Correct : A. 60%
83. The equipment used for pulverising is known as
Correct : A. Ball mill
84. The dimensions of generalised constants A and D are
Correct : E. Both are dimensionless
85. Which of the following material has high scrap value as compared to initial cost?
Correct : B. Copper
86. Which plant has least pollution problem?
Correct : B. Hydro-electric power plant
87. The standard frequency of electric power supply in India is
Correct : B. 50 Hz
88. An air preheater is an essential part of which of the following power plant?
Correct : A. Steam power plant
89. The compressor used in gas turbine is usually
Correct : B. Multistage axial flow compressor
90. In a steam locomotive the power is generated in
Correct : D. Double acting non-condensing steam engine
91. Which of the following domestic utility item consumes least power?