McqMate
1. |
The carbon percentage in diesel oil is nearly |
A. | 52% |
B. | 66% |
C. | 100% |
D. | 86% |
E. | 74% |
Answer» D. 86% |
2. |
Which of the following power plant can be easily started from cold conditions? |
A. | Nuclear power plant |
B. | Thermal power plant |
C. | Diesel engine power plant |
D. | Any of the above |
E. | None of the above |
Answer» C. Diesel engine power plant |
3. |
100 MW Dhurva reactor is basically a |
A. | research reactor |
B. | power generation unit |
C. | recycling unit |
D. | None of the above |
E. | None of the above |
Answer» A. research reactor |
4. |
Which of the following plant is suitable for peak load? |
A. | Diesel engine plant |
B. | Steam power plant |
C. | Nuclear power plant |
D. | Hydro-electric power plant |
E. | All of the above |
Answer» A. Diesel engine plant |
5. |
Gas turbines are widely used in |
A. | Power generation |
B. | Aircraft |
C. | Pumping stations |
D. | Ship |
E. | Locomotive |
Answer» B. Aircraft |
6. |
The alternators for a steam power plant usually run at |
A. | 3000 rpm |
B. | 1500 rpm |
C. | 1200 rpm |
D. | 30,000 rpm |
E. | 750 rpm |
Answer» A. 3000 rpm |
7. |
Producer gas mainly contains |
A. | carbon dioxide and steam |
B. | carbon monoxide and nitrogen |
C. | methane, ethane and butane |
D. | hydrocarbons |
E. | None of the above |
Answer» B. carbon monoxide and nitrogen |
8. |
Which of the following equipment is installed in power plants to reduce air pollution due to smoke? |
A. | Desuperheaters |
B. | Electrostaric precipitators |
C. | Reheaters |
D. | Air filters |
E. | None of the above |
Answer» B. Electrostaric precipitators |
9. |
The flicker effect of fluorescent lamps is more pronounced at |
A. | Lower frequencies |
B. | Higher frequencies |
C. | Lower voltage |
D. | Higher voltages |
E. | None of the above |
Answer» E. None of the above |
10. |
Geologists believe that below the earth's crust, the molten mass exists in the form of |
A. | magma |
B. | vent |
C. | hot cell |
D. | liquation |
E. | None of the above |
Answer» A. magma |
11. |
Return to earth of the oxides of sulphur and nitrogen occurs in the form of |
A. | acid rain |
B. | acid show |
C. | acid fog |
D. | any of the above |
E. | None of the above |
Answer» D. any of the above |
12. |
ASTM coal classification is based on |
A. | proximate analysis |
B. | ultimate analysis |
C. | orsat analysis |
D. | None of the above |
E. | None of the above |
Answer» A. proximate analysis |
13. |
The phenomenon of physical adhesion of molecules to the surfaces of solids without chemical reaction is known as |
A. | dredging |
B. | coking |
C. | adsorption |
D. | liquation |
E. | None of the above |
Answer» C. adsorption |
14. |
When a conductor is suspended between two supports at the same level it taken the shape of |
A. | Parabola |
B. | Semi-circle |
C. | Cycloid |
D. | Epicycloid |
E. | Catenary |
Answer» E. Catenary |
15. |
Which of the following plant can be conveniently located close to be load centre? |
A. | Nuclear power plant |
B. | Hydro-electric power plant |
C. | Diesel engine power plant |
D. | Steam power plant |
E. | All of the above |
Answer» C. Diesel engine power plant |
16. |
Fluidized bed combustion helps to reduce |
A. | boiler size |
B. | pollution |
C. | both (A) and (B) above |
E. | None of the above |
Answer» C. both (A) and (B) above |
17. |
Electrostatic precipitators are most effective on |
A. | carbon dioxide |
B. | nitrogen |
C. | coarse dust |
D. | fine dust |
E. | None of the above |
Answer» D. fine dust |
18. |
A 660 V cable is known as |
A. | Extra high tension cable |
B. | High tension cable |
C. | Super tension cable |
D. | Low tension cable |
E. | Extra super voltage cable |
Answer» D. Low tension cable |
19. |
Which of the following public sector unit is engaged in the manufacture of thermal power plants? |
A. | Department of science and technology |
B. | National Thermal Power Corporation Ltd |
C. | Heavy Engineering Corporation Ltd |
D. | Bharat Heavy Electricals Ltd |
E. | Coal India Ltd |
Answer» 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 |
A. | Armouring |
B. | Bedding |
C. | Laying |
D. | Cover |
E. | None of the above |
Answer» B. Bedding |
21. |
In a long transmission line, the effect of |
A. | resistance and capacitance is taken into account but effect of inductance is neglected |
B. | resistance, capacitance and inductance is taken into account |
C. | capacitance and inductance is taken into account but effect of resistance is neglected |
D. | resistance, capacitance and inductance is neglected |
E. | resistance and inductance is taken into account but effect of capacitance is neglected |
Answer» B. resistance, capacitance and inductance is taken into account |
22. |
Which of the following short-circuit is the most dangerous? |
A. | Line to line short circuit |
B. | Dead short circuit |
C. | Line to ground short circuit |
D. | Line to line and ground short circuit |
E. | None of the above |
Answer» B. Dead short circuit |
23. |
Transient disturbances are due to |
A. | switching operations |
B. | load variations |
C. | faults |
D. | Any of the above |
E. | None of the above |
Answer» D. Any of the above |
24. |
Which of the following power plant will give least running cost of the production of electrical power? |
A. | Nuclear power plant |
B. | Gas turbine power plant |
C. | Diesel engine power plant |
D. | Steam power plant |
E. | All will have nearly same running cost |
Answer» A. Nuclear power plant |
25. |
Which of the following power plant is free from environmental pollution problems? |
A. | Thermal power plant |
B. | Nuclear power plant |
C. | Hydro power plant |
D. | Geothermal power plant |
E. | None of the above |
Answer» C. Hydro power plant |
26. |
In a steam turbine cycle the lowest pressure occurs in |
A. | Turbine inlet |
B. | Super-heater |
C. | Super-heater exit |
D. | Boiler |
E. | Condenser |
Answer» E. Condenser |
27. |
Which of the following is not a high pressure boiler? |
A. | Loeffler |
B. | Lancashire coiler |
C. | Velox boiler |
D. | La Mont boiler |
E. | None of the above |
Answer» B. Lancashire coiler |
28. |
TNT |
A. | thermonuclear thorium |
B. | total neutron transition |
C. | thermal neutron treatment |
D. | trinitrotoluene |
E. | None of the above |
Answer» D. trinitrotoluene |
29. |
All of the following are heavy metals EXCEPT |
A. | Mercury |
B. | Sodium |
C. | Chromium |
D. | Cadmium |
E. | None of the above |
Answer» B. Sodium |
30. |
The characteristic impedance of transmission line depends upon |
A. | shape of the conductor |
B. | surface treatment of the conductor |
C. | geometrical configuration of the conductor |
D. | conductivity of the material |
E. | None of the above |
Answer» C. geometrical configuration of the conductor |
31. |
A relay for protective system should have |
A. | High speed operation |
B. | High sensitivity |
C. | Selectivity |
D. | Reliability |
E. | All of the above |
Answer» E. All of the above |
32. |
Beaufort scale is used to measure |
A. | beta and gamma radiations |
B. | wind speed |
C. | insulation |
D. | depth of sea |
E. | None of the above |
Answer» 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 |
A. | 0.25 K |
B. | 2 K |
C. | 1.25 K |
D. | 0.3125 K |
E. | 5 K |
Answer» D. 0.3125 K |
34. |
The problem of ash handling does not exist in case of ------ fired boilers. |
A. | Lignite |
B. | Pulverised fuel |
C. | Peat |
D. | Gas |
E. | None of the above |
Answer» D. Gas |
35. |
One BTU is the amount of energy required to raise the temperature of |
A. | One gram of water through 1?F |
B. | One pound of water through 1?F |
C. | One kilogram of water through ?F |
D. | One pound of water through 1?C |
E. | One gram of water through 1?C |
Answer» B. One pound of water through 1?F |
36. |
Which of the following material has the best conductivity? |
A. | Cadmium copper |
B. | Aluminium |
C. | Copper |
D. | 5.71 |
E. | ACSR |
Answer» 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 |
A. | 75% |
B. | 60% |
C. | 25% |
D. | 40% |
E. | 50% |
Answer» A. 75% |
38. |
Coal rank classifies coal according to its |
A. | carbon percentage |
B. | ash content |
C. | degree of metamorphism |
D. | density |
E. | None of the above |
Answer» C. degree of metamorphism |
39. |
The capacity of generators being installed in super-thermal power plant is |
A. | 220 MW |
B. | 400 MW |
C. | 100 MW |
D. | 200 MW |
E. | 500 MW |
Answer» E. 500 MW |
40. |
The disadvantage of renewable sources of energy is |
A. | lack of dependability |
B. | availability in low energy densities |
C. | intermittency |
D. | All of the above |
E. | None of the above |
Answer» D. All of the above |
41. |
Local winds are caused by |
A. | differential heating of land and water |
B. | differential heating of plains and mountains |
C. | any of the above |
E. | None of the above |
Answer» C. any of the above |
42. |
Corona usually occurs when the electrostatic stress in the air around the conductor exceeds |
A. | 32 kV (maximum values)/cm |
B. | 22 kV (maximum value)/cm |
C. | 11 kV (rms value)/cm |
D. | 6.6 kV (rms value)/cm |
E. | None of the above |
Answer» A. 32 kV (maximum values)/cm |
43. |
Exosphere is the space beyond the earth's atmosphere. It begins at a height of about |
A. | 100 km |
B. | 220 km |
C. | 400 km |
D. | 1000 km |
E. | None of the above |
Answer» D. 1000 km |
44. |
Which of the following power plant can be installed within the shortest possible time? |
A. | Gas turbine power plant |
B. | Hydro-electric power plant |
C. | Steam power plant |
D. | Nuclear power plant |
E. | Diesel engine power plant |
Answer» E. Diesel engine power plant |
45. |
Hopkinson demand rate curve is a |
A. | one part tariff |
B. | two part tariff |
C. | three part tariff |
D. | four part tariff |
E. | None of the above |
Answer» B. two part tariff |
46. |
API gravity is expressed in terms of |
A. | gm/cc |
B. | dimensionless numbers |
C. | degrees |
D. | None of the above |
E. | None of the above |
Answer» C. degrees |
47. |
Which of the following is not the standard rating of GLS lamps in India? |
A. | 100 W |
B. | 50 W |
C. | 25 W |
D. | 60 W |
E. | 40 W |
Answer» B. 50 W |
48. |
Thermal neutrons are |
A. | exceptionally fast neutrons |
B. | fast neutrons |
C. | moderately fast neutrons |
D. | slow neutrons |
E. | None of the above |
Answer» D. slow neutrons |
49. |
Which of the following place is associated with thermal power plants? |
A. | Obra |
B. | Tarapur |
C. | Agra |
D. | DVC |
E. | Bhakra |
Answer» A. Obra |
50. |
Which of the following equipment can be used for improving the power factor ? |
A. | Static capacitors |
B. | Synchronous condenser |
C. | Phase advancer |
D. | Any of the above |
E. | None of the above |
Answer» D. Any of the above |
51. |
Illuminating gas is |
A. | blast furnace gas |
B. | coal and carburretted water gas |
C. | methane gas |
D. | light petroleum gas |
E. | None of the above |
Answer» B. coal and carburretted water gas |
52. |
Deuterium oxide is used in nuclear reactors as |
A. | fuel |
B. | moderator |
C. | shield |
D. | regulator |
E. | None of the above |
Answer» B. moderator |
53. |
The advantage of dc transmission system over ac transmission system is |
A. | dc system it economical |
B. | there is no skin effect in dc system |
C. | corona limits are highest for dc circuits as compared to ac circuits |
D. | All of the above |
E. | None of the above |
Answer» D. All of the above |
54. |
In a medium transmission line the effect of |
A. | resistance and inductance is negligible but effect of capacitance is taken into account |
B. | resistance is negligible |
C. | capacitance is negligible |
D. | inductance is negligible |
E. | resistance, capacitance and inductance is taken into account |
Answer» E. resistance, capacitance and inductance is taken into account |
55. |
The presence of CO2 and H2O in the atmosphere results in absorption of |
A. | short wave ultraviolet radiations |
B. | visible wavelengths of spectrum |
C. | long wave infrared radiations |
D. | all of the above |
E. | None of the above |
Answer» C. long wave infrared radiations |
56. |
The calorific value of natural gas is expected to be around |
A. | 2000 kcal/m3 |
B. | 500 kcal/m3 |
C. | 1500 kcal/m3 |
D. | 2500 kcal/m3 |
E. | 25000 kcal/m3 |
Answer» B. 500 kcal/m3 |
57. |
The name DVC is associated with which type of power generation? |
A. | Gas turbine |
B. | Hydro-electric |
C. | Thermal |
D. | Diesel engine |
E. | Nuclear |
Answer» B. Hydro-electric |
58. |
Which of the following gas is sometimes filled in filament lamps? |
A. | Hydrogen |
B. | Helium |
C. | Argon |
D. | Ozone |
E. | Oxygen |
Answer» C. Argon |
59. |
The heating value of coal largely depends on |
A. | Sulphur content |
B. | Volatile matter |
C. | Moisture content |
D. | Size of coal particles |
E. | Carbon content |
Answer» E. Carbon content |
60. |
Pulverised coal is |
A. | Non-smoking coal |
B. | Coal free from as content |
C. | Coal which burns for long time |
D. | Coal free from sulphur |
E. | Coal broken into fine pieces |
Answer» E. Coal broken into fine pieces |
61. |
The skin effect of a conductor will reduce as |
A. | the diameter increases |
B. | the frequency increases |
C. | the permeability of conductor material increases |
D. | the resistivity of conductor material increases |
E. | None of the above |
Answer» D. the resistivity of conductor material increases |
62. |
The calorific value of diesel oil is expected to be around |
A. | 21000 kcal/kg |
B. | 5000 kcal/kg |
C. | 16000 kcal/kg |
D. | 1000 kcal/kg |
E. | 11000 kcal/kg |
Answer» E. 11000 kcal/kg |
63. |
The expected life of wooden poles is |
A. | 1 year |
B. | 5 years |
C. | 15 years |
D. | 50 years |
E. | None of the above |
Answer» C. 15 years |
64. |
The average cost of power per kWh for domestic consumers in India is |
A. | 10 to 15 paise |
B. | 20 to 30 paise |
C. | 30 to 45 paise |
D. | 50 to 65 paise |
E. | None of the above |
Answer» D. 50 to 65 paise |
65. |
Betz law finds application in |
A. | MHD systems |
B. | Solar cells |
C. | Geothermal power plants |
D. | Wind mills |
E. | None of the above |
Answer» 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 |
A. | 4 metres |
B. | 7.5 metres |
C. | 10 metres |
D. | 15 metres |
E. | None of the above |
Answer» A. 4 metres |
67. |
The highest voltage at which the power is transmitted in India is |
A. | 33 kV |
B. | 66 kV |
C. | 132 kV |
D. | 400 kV |
E. | 220 kV |
Answer» D. 400 kV |
68. |
Activated carbon is used for |
A. | absorption of gases |
B. | paints and varnishes as colouring agent |
C. | purification of water |
D. | production of carbon steels |
E. | None of the above |
Answer» A. absorption of gases |
69. |
In any transmission line, which two generalised constants are equal? |
A. | A and B |
B. | A and C |
C. | A and D |
D. | B and C |
E. | C and D |
Answer» C. A and D |
70. |
In case of oil fired boiler, the excess air is usually |
A. | 1 to 2 percent |
B. | 5 to 12 percent |
C. | 20 to 25 percent |
D. | 75 to 125 percent |
E. | None of the above |
Answer» B. 5 to 12 percent |
71. |
Watt second is the unit of |
A. | Force |
B. | Momentum |
C. | Power |
D. | Energy |
E. | None of the above |
Answer» D. Energy |
72. |
A metallic sheath is provided on cable |
A. | to protect against moisture, gases and other damaging liquids |
B. | to protect from mechanical damage due to rubbing |
C. | to protect against sparking |
D. | to avoid damage to the cable during laying |
E. | All of the above |
Answer» A. to protect against moisture, gases and other damaging liquids |
73. |
The efficiency of a thermal power plant improves with |
A. | Larger quantity of water used |
B. | Lower load on the plant |
C. | Increased quantity of coal burnt |
D. | Use of high pressure steam |
E. | All of the above |
Answer» D. Use of high pressure steam |
74. |
Which of the following is the advantage of de transmission? |
A. | Absence of line inductance and capacitance problems |
B. | No skin effects |
C. | For the same working voltage the potential stress on the insulation is less |
D. | No stability problems |
E. | All of the above |
Answer» E. All of the above |
75. |
Burning of low grade fuels can be improved by |
A. | Blending with better quality |
B. | Oil assisted ignition |
C. | Pulverising |
D. | Any of the above |
E. | None of the above |
Answer» D. Any of the above |
76. |
Which of the following is a natural solid fuel? |
A. | Pulverised coal |
B. | Wood charcoal |
C. | Bituminous coal |
D. | Coking coal |
E. | None of the above |
Answer» C. Bituminous coal |
77. |
The power factor of a 3 phase induction motor near full load is expected to be around |
A. | 0.5 leading |
B. | 0.5 lagging |
C. | 0.1 lagging |
D. | 0.8 lagging |
E. | 0.8 leading |
Answer» D. 0.8 lagging |
78. |
When geothermal energy is available in the form of saline water, power is developed using |
A. | flashed - steam system |
B. | binary - cycle system |
C. | total flow system |
D. | any of the above |
E. | None of the above |
Answer» D. any of the above |
79. |
If an engine has spark plugs, it can be safely concluded that it is |
A. | a two stroke engine |
B. | a air cooled engine |
C. | not a diesel engine |
D. | a four stroke engine |
E. | a water cooled engine |
Answer» C. not a diesel engine |
80. |
No moving parts are required in |
A. | MHD generator |
B. | Tidal power plant |
C. | Thermionic conversion |
D. | OTEC power plant |
E. | None of the above |
Answer» C. Thermionic conversion |
81. |
The work of installation and commissioning of power plants in India is generally undertaken by |
A. | NHPC Ltd |
B. | Steel Authority of India |
C. | NTPC Ltd. |
D. | Coal Authority of India |
E. | HAL |
Answer» C. NTPC Ltd. |
82. |
When the reactive component is small |
A. | the phase angle will be small and p.f. will be leading |
B. | the phase angle will be large and p.f. will be high |
C. | the phase angle will be small and p.f. will be unity |
D. | the phase angle will be small and p.f. will be high |
E. | the phase angle will be large and p.f. will be low |
Answer» 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? |
A. | Yellow |
B. | Blue |
C. | Violet |
D. | All of the above |
E. | None of the above |
Answer» A. Yellow |
84. |
Which of the following statement is correct? |
A. | Wind pressure reduces corona effects |
B. | Ice on conductors improves power factor |
C. | Wind pressure is taken to act in a direction at right angles to that for ice |
D. | Wind pressure and ice on conductors together improve regulation of power transmitted |
E. | None of the above |
Answer» C. Wind pressure is taken to act in a direction at right angles to that for ice |
85. |
An Orsat apparatus gives |
A. | volumetric analysis |
B. | gravimetric analysis |
C. | approximate analysis |
D. | only presence of constituents |
E. | None of the above |
Answer» A. volumetric analysis |
86. |
The specific gravity of copper is |
A. | 8.9 |
B. | 16.9 |
C. | 13.9 |
D. | 2.9 |
E. | 5.9 |
Answer» E. 5.9 |
87. |
Conductors for high voltage transmission lines are suspended from towers |
A. | to reduce clearance from ground |
B. | to increase clearance from ground |
C. | to reduce wind and snow loads |
D. | to take care of extension in length during summer |
E. | None of the above |
Answer» D. to take care of extension in length during summer |
88. |
Economiser in a steam power plant is used |
A. | To preheat air |
B. | To preheat feed water |
C. | To superheat steam |
D. | None of the above |
E. | None of the above |
Answer» B. To preheat feed water |
89. |
A pin type insulator is generally used upto |
A. | 66 kV |
B. | 132 kV |
C. | 33 kV |
D. | 1.1 kV |
E. | 11 kV |
Answer» C. 33 kV |
90. |
Naphtha is a volatile colourless product obtained from |
A. | methyl alcohol |
B. | vinyl acetate |
C. | sugar cane |
D. | petroleum |
E. | None of the above |
Answer» D. petroleum |
91. |
A 66 kV transmission line carrying power to a distance of 120 kilometre will be termed as |
A. | Short transmission line |
B. | Very short transmission line |
C. | Long transmission line |
D. | Medium transmission line |
E. | Tiny transmission line |
Answer» D. Medium transmission line |
92. |
Solar cells are made of |
A. | silicon |
B. | germanium |
C. | silver |
D. | aluminium |
E. | None of the above |
Answer» A. silicon |
93. |
In case the supply frequency is reduced from 50 Hz to 1 Hz which method of heating will be least affected? |
A. | Resistance heating |
B. | Dielectric heating |
C. | Induction heating |
D. | All of the above |
E. | None of the above |
Answer» A. Resistance heating |
94. |
Bottoming cycle in case of combined cycle power geneation is normally |
A. | Gas turbine cycle |
B. | Steam cycle |
C. | any of the above |
D. | None of the above |
E. | None of the above |
Answer» B. Steam cycle |
95. |
The major disadvantage with solar cells for power generation is |
A. | lack of availability |
B. | large area requirement |
C. | variable power |
D. | high cost |
E. | None of the above |
Answer» D. high cost |
96. |
Earth coal is |
A. | lignite |
B. | coal dust |
C. | black earth |
D. | wet coal |
E. | None of the above |
Answer» A. lignite |
97. |
Barytes concrete is generally used in |
A. | nuclear power plants |
B. | construction of dams |
C. | foundations for heavy equipment |
D. | construction of cooling towers |
E. | None of the above |
Answer» A. nuclear power plants |
98. |
The disadvantage of using solar evergy for power production is |
A. | Requirements of large area for harnessing solar energy |
B. | Energy available during day time only |
C. | Energy not available during cloudy weather |
D. | Initial cost is high |
E. | All of the above |
Answer» E. All of the above |
99. |
Chain gate stokers cannot be used for |
A. | coal lumps |
B. | low ash content coals |
C. | high ash content coals |
D. | None of the above |
E. | None of the above |
Answer» C. high ash content coals |
100. |
Heat rate : Efficiency |
A. | Coal : Oil |
B. | Momentum : Variable cost |
C. | Fixed cost : Variable cost |
D. | Resistance : Conductance |
E. | None of the above |
Answer» D. Resistance : Conductance |
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