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. |
Diesel locomotives in India are manufactured at |
| A. | Varanasi |
| B. | Ajmer |
| C. | Parambur |
| D. | Chitranjan |
| E. | Bangalore |
| Answer» B. Ajmer | |
| 2. |
All of the following places are associated with oil refineries EXCEPT |
| A. | Mathura |
| B. | Kanpur |
| C. | Bombay |
| D. | Koyali |
| E. | None of the above |
| Answer» C. Bombay | |
| 3. |
Out of the following system of distribution, which system offers the best economy? |
| A. | Direct current system |
| B. | AC single phase system |
| C. | AC 3 phase 3 wire system |
| D. | AC 3 phase 4 wire system |
| E. | None of the above |
| Answer» B. AC single phase system | |
| 4. |
Which distribution system is more reliable? |
| A. | Ring main system |
| B. | Tree system |
| C. | Radial system |
| D. | All are equally reliable |
| E. | None of the above |
| Answer» B. Tree system | |
| 5. |
Which of the following area is preferred for solar thermal electric power plants? |
| A. | Mountain tops |
| B. | Hot arid zones |
| C. | Coastal areas |
| D. | High rainfall zones |
| E. | None of the above |
| Answer» C. Coastal areas | |
| 6. |
The calorific value of lignite is expected to be around |
| A. | 10,000 kcal/kg |
| B. | 5000 kcal/kg |
| C. | 1000 kcal/kg |
| D. | 1500 kcal/kg |
| E. | 2500 kcal/kg |
| Answer» C. 1000 kcal/kg | |
| 7. |
Alternating current power is transmitted at high voltages |
| A. | to safeguard against pilferage |
| B. | to minimise transmission losses |
| C. | to reduce cost of generation |
| D. | to make the system reliable |
| E. | None of the above |
| Answer» C. to reduce cost of generation | |
| 8. |
The voltage of a single solar cell is |
| A. | 0.5 V |
| B. | 1 V |
| C. | 1.1 V |
| D. | 2.1 V |
| E. | None of the above |
| Answer» B. 1 V | |
| 9. |
Presence of non-condensable gases in geopressured water causes |
| A. | corrosion of parts |
| B. | pollution |
| C. | flow problems |
| D. | All of the above |
| E. | None of the above |
| Answer» E. None of the above | |
| 10. |
The highest point on the load curve represents |
| A. | Maximum time |
| B. | Maximum demand |
| C. | Maximum concrete load |
| D. | KVA rating of generators |
| E. | None of the above |
| Answer» C. Maximum concrete load | |
| 11. |
Strain type insulators are used where the conductors are |
| A. | dead ended |
| B. | at intermediate anchor towers |
| C. | any of the above |
| D. | None of the above |
| E. | None of the above |
| Answer» D. None of the above | |
| 12. |
Standed conductors are used for transmitting power at high voltages because of |
| A. | increased tensile strength |
| B. | low cost |
| C. | case in handling |
| D. | low wind resistance |
| E. | None of the above |
| Answer» D. low wind resistance | |
| 13. |
Skin effects is proportional to |
| A. | diameter of conductor |
| B. | (diameter of conductor) |
| C. | (diameter of conductor)2 |
| D. | (diameter of conductor)3 |
| E. | None of the above |
| Answer» D. (diameter of conductor)3 | |
| 14. |
In a transmission line if booster transformer is to be used, the preferred location will be |
| A. | at the receiving end |
| B. | at the sending end |
| C. | at the intermediate point |
| D. | anywhere in the line |
| E. | None of the above |
| Answer» D. anywhere in the line | |
| 15. |
The chances of corona are maximum during |
| A. | summer heat |
| B. | winter |
| C. | dry water |
| D. | humid weather |
| E. | None of the above |
| Answer» E. None of the above | |
| 16. |
In case of humic coals, hydrogen percentage varies from |
| A. | 4 to 6 percent |
| B. | 10 to 15 percent |
| C. | 16 to 20 percent |
| D. | 20 to 30 percent |
| E. | None of the above |
| Answer» B. 10 to 15 percent | |
| 17. |
Reverse capacity of a plants is given by |
| A. | Maximum demand - Average demand |
| B. | Plant capacity - Maximum demand |
| C. | Plant capacity - Average demand |
| D. | Plant capacity x (1 - Load factor) |
| E. | None of the above |
| Answer» C. Plant capacity - Average demand | |
| 18. |
Pearlite is |
| A. | a low ash containing coal |
| B. | same as lignite |
| C. | an insulation material |
| D. | none of the above |
| E. | None of the above |
| Answer» D. none of the above | |
| 19. |
The name DVC is associated with which type of power generation? |
| A. | Nuclear |
| B. | Hydro-electric |
| C. | Thermal |
| D. | Gas turbine |
| E. | Diesel engine |
| Answer» C. Thermal | |
| 20. |
Which of the following place is associated with thermal power plants? |
| A. | Agra |
| B. | Tarapur |
| C. | Bhakra |
| D. | Obra |
| E. | DVC |
| Answer» E. DVC | |
| 21. |
The capacity of generators being installed in super-thermal power plant is |
| A. | 200 MW |
| B. | 400 MW |
| C. | 100 MW |
| D. | 500 MW |
| E. | 220 MW |
| Answer» E. 220 MW | |
| 22. |
Which of the following is not the standard rating of GLS lamps in India? |
| A. | 50 W |
| B. | 60 W |
| C. | 40 W |
| D. | 100 W |
| E. | 25 W |
| Answer» B. 60 W | |
| 23. |
The work of installation and commissioning of power plants in India is generally undertaken by |
| A. | NTPC Ltd. |
| B. | Coal Authority of India |
| C. | Steel Authority of India |
| D. | NHPC Ltd |
| E. | HAL |
| Answer» B. Coal Authority of India | |
| 24. |
The highest voltage at which the power is transmitted in India is |
| A. | 400 kV |
| B. | 66 kV |
| C. | 33 kV |
| D. | 220 kV |
| E. | 132 kV |
| Answer» B. 66 kV | |
| 25. |
When the reactive component is small |
| A. | the phase angle will be small and p.f. will be high |
| B. | the phase angle will be large and p.f. will be low |
| C. | the phase angle will be small and p.f. will be unity |
| D. | the phase angle will be large and p.f. will be high |
| E. | the phase angle will be small and p.f. will be leading |
| Answer» B. the phase angle will be large and p.f. will be low | |
| 26. |
One BTU is the amount of energy required to raise the temperature of |
| A. | One gram of water through 1?C |
| B. | One pound of water through 1?C |
| C. | One gram of water through 1?F |
| D. | One pound of water through 1?F |
| E. | One kilogram of water through ?F |
| Answer» E. One kilogram of water through ?F | |
| 27. |
Which of the following material has the best conductivity? |
| A. | ACSR |
| B. | 5.71 |
| C. | Cadmium copper |
| D. | Copper |
| E. | Aluminium |
| Answer» E. Aluminium | |
| 28. |
Which lamp is used for cinerma projectors |
| A. | Carbon arc lamp |
| B. | Nitrogen filled GLS lamp |
| C. | Mercury vapour lamp |
| D. | Sodium vapour lamp |
| E. | Frosted GLS lamp |
| Answer» B. Nitrogen filled GLS lamp | |
| 29. |
If an engine has spark plugs, it can be safely concluded that it is |
| A. | a four stroke engine |
| B. | a air cooled engine |
| C. | a water cooled engine |
| D. | a two stroke engine |
| E. | not a diesel engine |
| Answer» F. | |
| 30. |
Heavy water is used in a nuclear power plant as a |
| A. | Coolant |
| B. | Reflector |
| C. | Fuel |
| D. | Shield |
| E. | Moderator |
| Answer» F. | |
| 31. |
Long distance electric trains take power on |
| A. | 600 V dc |
| B. | 25 kV single phase ac |
| C. | 25 kV two phase ac |
| D. | 1500 V dc |
| E. | 25 kV three phase ac |
| Answer» C. 25 kV two phase ac | |
| 32. |
The power factor of a 3 phase induction motor near full load is expected to be around |
| A. | 0.8 lagging |
| B. | 0.8 leading |
| C. | 0.5 lagging |
| D. | 0.5 leading |
| E. | 0.1 lagging |
| Answer» B. 0.8 leading | |
| 33. |
The major constituent of natural gas is |
| A. | Hydrogen |
| B. | Carbon monoxide |
| C. | Ammonia |
| D. | Methane |
| E. | Acetylene |
| Answer» E. Acetylene | |
| 34. |
1 kilowatt hour is the same as |
| A. | 1000 joules |
| B. | 1000 watt-sec |
| C. | 3600 watt-hours |
| D. | 3600,000 watt-sec |
| E. | 1 joule |
| Answer» E. 1 joule | |
| 35. |
A 11 kV transmission line carries power to a distance of 30 kilometres. This will be termed as |
| A. | Short transmission line |
| B. | Medium transmission line |
| C. | Long transmission line |
| D. | Very long transmission line |
| E. | None of the above |
| Answer» B. Medium transmission line | |
| 36. |
Reflecting mirrors for solar energy are known as |
| A. | diffusers |
| B. | ponds |
| C. | heliostats |
| D. | mantle |
| E. | None of the above |
| Answer» D. mantle | |
| 37. |
A micro hydel project has |
| A. | low head availability |
| B. | low power potential |
| C. | low discharge |
| D. | All of the above |
| E. | None of the above |
| Answer» E. None of the above | |
| 38. |
The power factor of a three phase induction motor at no load will be |
| A. | 0.5 to 0.6 leading |
| B. | 0.5 to 0.6 lagging |
| C. | 0.2 to 0.3 lagging |
| D. | Zero |
| E. | 0.2 to 0.3 leading |
| Answer» D. Zero | |
| 39. |
The insulators for overhead lines are generally made of |
| A. | Porcelain |
| B. | Wood |
| C. | Copper |
| D. | Plastic |
| E. | Aluminium |
| Answer» B. Wood | |
| 40. |
Litz wire, is used for intermediate frequencies to overcome |
| A. | corona effect |
| B. | skin effect |
| C. | radio interference |
| D. | All of the above |
| E. | None of the above |
| Answer» C. radio interference | |
| 41. |
When the power is to be transmitted over a distance of 580 km, the transmission voltage should be in the range |
| A. | 33 kV - 66 kV |
| B. | 66 kV - 100 kV |
| C. | 110 kV - 150 kV |
| D. | 150 kV - 200 kV |
| E. | None of the above |
| Answer» E. None of the above | |
| 42. |
All of the following are hard coals EXCEPT |
| A. | Authracite |
| B. | Lignite |
| C. | Bituminous |
| D. | Semi-bituminous |
| E. | None of the above |
| Answer» C. Bituminous | |
| 43. |
For transmission lines the standing wave ratio is the ratio of |
| A. | maximum foltage to minimum voltage |
| B. | maximum current to minimum voltage |
| C. | peak voltage to rms voltage |
| D. | maximum reactance to minimum reactance |
| E. | None of the above |
| Answer» B. maximum current to minimum voltage | |
| 44. |
Wind form of power generation are being established at |
| A. | Kutch |
| B. | Tuticorin |
| C. | J & K |
| D. | all above places |
| E. | None of the above |
| Answer» E. None of the above | |
| 45. |
The dielectric strength of rubber is about |
| A. | 3 kV/mm |
| B. | 30 kV/m |
| C. | 30 kV/cm |
| D. | None of the above |
| E. | All of the above |
| Answer» C. 30 kV/cm | |
| 46. |
Which of the following needs to be filtered in a diesel engine? |
| A. | Air and diesel oil only |
| B. | Air only |
| C. | Lubrecating oil only |
| D. | Air, diesel oil and lubricating |
| E. | Diesel oil only |
| Answer» E. Diesel oil only | |
| 47. |
ACSR conductor having 7 steel strands surrounded by 25 aluminium conductors will be specified as |
| A. | 7?25 |
| B. | 7?32 |
| C. | 25?7 |
| D. | 25?32 |
| E. | None of the above |
| Answer» D. 25?32 | |
| 48. |
A current of 10 milli-amperes through human body |
| A. | will cause mild sensation |
| B. | will affect muscle control |
| C. | will affect breathing |
| D. | will cause death |
| E. | None of the above |
| Answer» B. will affect muscle control | |
| 49. |
Which type of conductors are used for transmitting bulk of power at high voltage? |
| A. | ACSR |
| B. | Copper |
| C. | Cadmium copper |
| D. | Galvanised steel |
| E. | Any of the above |
| Answer» B. Copper | |
| 50. |
In a transmission line following are the distributed parameters |
| A. | resistance and inductance only |
| B. | resistance, inductance and capacitance |
| C. | resistance, inductance, capacitance and short conductance |
| D. | None of the above |
| Answer» D. None of the above | |