MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The device used to generate power utilising energy of wind is called |
| A. | Air motor |
| B. | Aerogenerator |
| C. | Windmill |
| D. | Wind generagor |
| E. | None of the above |
| Answer» D. Wind generagor | |
| 2. |
soot is virtually nothing but |
| A. | ash |
| B. | cinder |
| C. | gas |
| D. | carbon |
| E. | None of the above |
| Answer» E. None of the above | |
| 3. |
High load factor can be expected in |
| A. | power plants near load centre |
| B. | slow speed power plants |
| C. | multi-unit power plants |
| D. | base load stations |
| E. | None of the above |
| Answer» E. None of the above | |
| 4. |
The speed of the primemover is controlled by |
| A. | cam shaft |
| B. | feed pump |
| C. | regulator |
| D. | governor |
| E. | None of the above |
| Answer» E. None of the above | |
| 5. |
Which of the following is not needed in megneto hydrodynamic power plants? |
| A. | Chimney |
| B. | Combustor |
| C. | Steam turbine |
| D. | Fuel |
| E. | None of the above |
| Answer» D. Fuel | |
| 6. |
Pea coal is |
| A. | anthracite coal, small in size |
| B. | same as peat |
| C. | low ash content lignite |
| D. | none of the above |
| E. | None of the above |
| Answer» B. same as peat | |
| 7. |
Air curtains find applications in |
| A. | air conditioned spaces |
| B. | green houses |
| C. | nuclear power plants |
| D. | solar energy system |
| E. | None of the above |
| Answer» B. green houses | |
| 8. |
The current down by the transmission line due to corona losses is |
| A. | sinusoidal |
| B. | square |
| C. | non-sinusoidal |
| D. | None of the above |
| Answer» D. None of the above | |
| 9. |
The effect of ice deposition on conductor is |
| A. | increased skin effect |
| B. | reduced corona losses |
| C. | increased weight |
| D. | reduced sag |
| E. | None of the above |
| Answer» D. reduced sag | |
| 10. |
In petrothermal systems of geothermal energy there is hot dry rock but no underground water. In such systems energy is obtained by |
| A. | circulating compressed air |
| B. | pumping water |
| C. | creating water wells |
| D. | None of the above |
| E. | None of the above |
| Answer» C. creating water wells | |
| 11. |
All of the following plants are suitable for peak load EXCEPT |
| A. | Gas turbine plant |
| B. | Pumped storage plant |
| C. | Diesel engine plant |
| D. | Nuclear power plant |
| E. | All of the above |
| Answer» E. All of the above | |
| 12. |
Flash generally results from |
| A. | gas turbines |
| B. | diesel engines |
| C. | pulverized coal boilers |
| D. | fluidized bed boilers |
| E. | None of the above |
| Answer» D. fluidized bed boilers | |
| 13. |
A load curve helps in deciding |
| A. | size of the generating units |
| B. | total installed capacity of the plant |
| C. | operating schedule of the generating units |
| D. | All of the above |
| E. | None of the above |
| Answer» E. None of the above | |
| 14. |
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 |
| A. | 30 MW |
| B. | 60 MW |
| C. | 70 MW |
| D. | 50 MW |
| E. | 45 MW |
| Answer» E. 45 MW | |
| 15. |
Single peak in the load curve means |
| A. | unity load factor |
| B. | high load factor |
| C. | 0.5 load factor |
| D. | low load factor |
| E. | None of the above |
| Answer» E. None of the above | |
| 16. |
HBJ pipeline orginates from |
| A. | Gujarat and ends in Bihar |
| B. | Maharashtra and ends in Uttar Pradesh |
| C. | Maharashtra and ends in Bihar |
| D. | Gujarat and ends in Uttar Pradesh |
| E. | None of the above |
| Answer» E. None of the above | |
| 17. |
Attemperation is |
| A. | the process of reducing pollution through stack gases |
| B. | the process of energy conservation by the use of economiser, etc. |
| C. | preheating of water before admission to boiler |
| D. | the reduction of steam temperature |
| E. | None of the above |
| Answer» E. None of the above | |
| 18. |
Which authority is directly concerned with generation and distribution of electricity? |
| A. | Electricity Authority of India |
| B. | Department of Science and Technology |
| C. | Ministry of Power |
| D. | State Electricity Boards |
| E. | None of the above |
| Answer» E. None of the above | |
| 19. |
In ACSR conductors |
| A. | varnish is the insulation used |
| B. | bitumen is the insulation between aluminium and steel |
| C. | no insulation is used between aluminium and steel |
| D. | air acts as insulation medium between aluminium and steel |
| E. | None of the above |
| Answer» D. air acts as insulation medium between aluminium and steel | |
| 20. |
Ekman spiral is an idealized mathematical description of |
| A. | ocean temperature gradient |
| B. | wind distribution in the planetary boundary layer |
| C. | carbon dioxide percentage variation with elevation |
| D. | radioactive decay of materials |
| E. | None of the above |
| Answer» C. carbon dioxide percentage variation with elevation | |
| 21. |
Hot template curves are the plot of |
| A. | conductor sags and span lengths |
| B. | temperature and ground clearance |
| C. | temperature and humidity |
| D. | conductor weight and sag |
| E. | None of the above |
| Answer» B. temperature and ground clearance | |
| 22. |
In order to reduce skin effect at UHF |
| A. | conductors are painted |
| B. | conductors are anodised |
| C. | copper tubes with silver plating are used |
| D. | copper rods with silver plating are used |
| E. | None of the above |
| Answer» D. copper rods with silver plating are used | |
| 23. |
In which power plant chimney is not needed? |
| A. | Gas turbine power plant |
| B. | Steam power plant |
| C. | Hydro-electric power plant |
| D. | All of the above |
| E. | None of the above |
| Answer» D. All of the above | |
| 24. |
In any transmission line, the dimensions of constants B and C are |
| A. | ohm and ohm |
| B. | ohm and mho |
| C. | mho and ohm |
| D. | mho and mho |
| E. | None of the above |
| Answer» C. mho and ohm | |
| 25. |
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 |
| A. | 50 percent |
| B. | 60 percent |
| C. | 70 percent |
| D. | 80 percent |
| E. | None of the above |
| Answer» D. 80 percent | |
| 26. |
A Buchholz relay is used on |
| A. | Transformer |
| B. | Generators |
| C. | Transmission lines |
| D. | Cables |
| E. | All of the above |
| Answer» B. Generators | |
| 27. |
Quad is a mesure of |
| A. | photosynthesis |
| B. | wind power |
| C. | radioactive decay |
| D. | energy |
| E. | None of the above |
| Answer» E. None of the above | |
| 28. |
In case the height of transmission towers is increased |
| A. | the line capacitance and inductance will not change |
| B. | the line capacitance will increase but line inductance will increase |
| C. | the line capacitance will decrease and line inductance will increase |
| D. | the line capacitance will decrease but line inductance will remain unaltered |
| E. | None of the above |
| Answer» E. None of the above | |
| 29. |
The average pH of the normal rainfall is usually |
| A. | neutral |
| B. | slightly acidic |
| C. | slightly alkaline |
| D. | None of the above |
| Answer» C. slightly alkaline | |
| 30. |
Which of the following will need highest level of illumination? |
| A. | Railway platforms |
| B. | Foyer for cinema halls |
| C. | Bed rooms |
| D. | Hospital wards |
| E. | Proof reading |
| Answer» F. | |
| 31. |
In a fuel cell positive electrode is of |
| A. | oxygen |
| B. | hydrogen |
| C. | ammonia |
| D. | carbon monoxide |
| E. | None of the above |
| Answer» B. hydrogen | |
| 32. |
Natural gas is obtained |
| A. | as by-product from blast furnace |
| B. | as by-product from petroleum refining |
| C. | from earth's surface usually along with crude |
| D. | from ammonia |
| E. | None of the above |
| Answer» D. from ammonia | |
| 33. |
Which of the following cannot be the prime-mover for a generator of 120 MW capacity? |
| A. | Steam turbine |
| B. | Gas turbine |
| C. | Kaplan turbine |
| D. | Diesel engine |
| E. | None of the above |
| Answer» E. None of the above | |
| 34. |
Pyrhelicometer measures |
| A. | intensity of direct solar radiation |
| B. | wind speed at an elevation |
| C. | fission caused by thermal reutrons |
| D. | total electromagnetic radiation cmitted by the sun |
| E. | None of the above |
| Answer» B. wind speed at an elevation | |
| 35. |
Which of the following location is not associated with super-thermal power plant? |
| A. | Korba |
| B. | Badarpur |
| C. | Farakka |
| D. | Rehand |
| E. | None of the above |
| Answer» C. Farakka | |
| 36. |
Corona generally results in |
| A. | Violet glow |
| B. | Hissing noise |
| C. | Production of ozone gas |
| D. | All of the above |
| E. | None of the above |
| Answer» E. None of the above | |
| 37. |
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» D. density | |
| 38. |
Grade of the coal is the same as |
| A. | ultimate analysis |
| B. | proximate analysis |
| C. | orsat analysis |
| D. | rank |
| E. | None of the above |
| Answer» E. None of the above | |
| 39. |
Solvent refined coal has low percentage of |
| A. | ash |
| B. | sulphur |
| C. | impurities |
| D. | All of the above |
| E. | None of the above |
| Answer» E. None of the above | |
| 40. |
The calorific value of coal gas is expected to be around |
| A. | 1500 kcal/m3 |
| B. | 500 kcal/m3 |
| C. | 2500 kcal/m3 |
| D. | 7500 kcal/m3 |
| E. | 5000 kcal/m3 |
| Answer» E. 5000 kcal/m3 | |
| 41. |
Which of the following variety of coal will have highest ash content |
| A. | Grade I steam coal |
| B. | Bituminous coal |
| C. | Coking coal |
| D. | Bengal coal |
| E. | Lignite |
| Answer» F. | |
| 42. |
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» F. | |
| 43. |
The live storage of coal in power plant means |
| A. | Purified coal |
| B. | Storage of coal sufficient to meet hour demand for the plant. |
| C. | Coal ready for combustion |
| D. | Coal in transit |
| E. | Preheated coal |
| Answer» C. Coal ready for combustion | |
| 44. |
High horse power diesel engines are usually started by |
| A. | Batteries |
| B. | Compressed air |
| C. | Self-starter or cranking |
| D. | Cranking |
| E. | Self-starter |
| Answer» C. Self-starter or cranking | |
| 45. |
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» F. | |
| 46. |
The expected life of wooden pols for transmission line is |
| A. | 5 to 8 years |
| B. | 1 to 2 years |
| C. | 2 to 5 years |
| D. | 20 to 25 years |
| E. | 30 to 60 years |
| Answer» E. 30 to 60 years | |
| 47. |
Parr's classification of coal is based on |
| A. | proximate analysis |
| B. | ultimate analysis |
| C. | orsat analysis |
| D. | none of above |
| E. | None of the above |
| Answer» B. ultimate analysis | |
| 48. |
The standard wattage of 4 feet fluorescent tube is |
| A. | 10 W |
| B. | 100 W |
| C. | 250 W |
| D. | 500 W |
| E. | 40 W |
| Answer» F. | |
| 49. |
For the same wattage, which of the following lamp is cheapest? |
| A. | Mercury vapour lamp |
| B. | Fluorescent tube 4 ft. |
| C. | Fluorescent tube 2 ft. |
| D. | GLS lamp |
| E. | Sodium vapour lamp |
| Answer» E. Sodium vapour lamp | |
| 50. |
Which of the following place is not associated with hydro-electric power plants? |
| A. | Farakka |
| B. | Singrauli |
| C. | Koyana |
| D. | Bhakra |
| E. | Nagarjunsagar |
| Answer» C. Koyana | |