MCQOPTIONS
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MCQOPTIONS
This section includes 25 Mcqs, each offering curated multiple-choice questions to sharpen your Energy Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In which part do we find sensors and actuators? |
| A. | Fixed gears |
| B. | Turbines |
| C. | Control systems |
| D. | Blades |
| Answer» D. Blades | |
| 2. |
Which type of windmills are been used for primary purposes? |
| A. | Post mill |
| B. | Smock mill |
| C. | Tower mill |
| D. | Fan mill |
| Answer» E. | |
| 3. |
How many types of supporting tower for wind mill are generally used? |
| A. | 2 |
| B. | 4 |
| C. | 3 |
| D. | 5 |
| Answer» C. 3 | |
| 4. |
What type of cross sections does wind turbine blades have? |
| A. | Penta hedral cross section |
| B. | Air foiled type cross section |
| C. | Radar cross section |
| D. | Turbo cross section |
| Answer» C. Radar cross section | |
| 5. |
When was the Darrieus type machine invented? |
| A. | 1925 |
| B. | 1932 |
| C. | 1929 |
| D. | 1948 |
| Answer» B. 1932 | |
| 6. |
What happens when the land near the earth's equator is heated? |
| A. | All the oceans gets heated up |
| B. | Small wind currents are formed |
| C. | Rise in tides |
| D. | Large atmospheric winds are created |
| Answer» E. | |
| 7. |
Which type of vertical wind machine has relatively low solidity and low starting torques? |
| A. | Cup anemometer |
| B. | Savonius rotor |
| C. | Darrieus type rotor |
| D. | Magnus effect rotor |
| Answer» D. Magnus effect rotor | |
| 8. |
At what range of speed is the electricity from the wind turbine is generated? |
| A. | 100 - 125 mph |
| B. | 450 - 650 mph |
| C. | 250 - 450 mph |
| D. | 30-35 mph |
| Answer» E. | |
| 9. |
Which type of generator are made use in wind turbines? |
| A. | Recreational generators |
| B. | Synchronous generator |
| C. | Asynchronous generator |
| D. | Alternator |
| Answer» C. Asynchronous generator | |
| 10. |
Turbines with how many propellers are used in order to avoid vibrations? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» D. 4 | |
| 11. |
Why recommendation of fixed ratio gears done for top mounted equipment? |
| A. | Because they are easy install |
| B. | Requires less space |
| C. | Due to its low cost |
| D. | Because of their high efficiency |
| Answer» E. | |
| 12. |
How much power does the small scale wind machine generate? |
| A. | 18 KW |
| B. | 2 KW |
| C. | 12 KW |
| D. | 30 KW |
| Answer» C. 12 KW | |
| 13. |
With upto how many propellers can windmills are built? |
| A. | 4 |
| B. | 2 |
| C. | 7 |
| D. | 6 |
| Answer» E. | |
| 14. |
Which type of wind mills blade are made out of cloth?1. In which of the following, does machine rotor drives through a step up gear box? |
| A. | Horizontal axis with two aerodynamic blades |
| B. | Horizontal axis propeller type wind mill |
| C. | Horizontal axis multi bladed type wind mill |
| D. | Sail type wind mill |
| Answer» E. | |
| 15. |
Name the type of windmill which consists of a sloping, horizontally weather boarded or thatched tower. |
| A. | Post mill |
| B. | Smock mill |
| C. | Tower mill |
| D. | Fan mill |
| Answer» C. Tower mill | |
| 16. |
What form of force acts on the blades of Darrieus machine? |
| A. | Pure tension |
| B. | Compression |
| C. | Shear force |
| D. | Air resistance force |
| Answer» B. Compression | |
| 17. |
What are used to turn wind energy into electrical energy? |
| A. | Turbine |
| B. | Generators |
| C. | Yaw motor |
| D. | Blades |
| Answer» B. Generators | |
| 18. |
What is the diameter of wind turbine blades? |
| A. | 320 feet |
| B. | 220 feet |
| C. | 80 feet |
| D. | 500 feet |
| Answer» C. 80 feet | |
| 19. |
Which are further improvements on smock mill? |
| A. | Post mill |
| B. | Smock mill |
| C. | Tower mill |
| D. | Fan mill |
| Answer» D. Fan mill | |
| 20. |
Which type of windmill blades are made out of sheet metal or aluminum?1. In which of the following, does machine rotor drives through a step up gear box? |
| A. | Horizontal axis with two aerodynamic blades |
| B. | Horizontal axis propeller type wind mill |
| C. | Horizontal axis multi bladed type wind mill |
| D. | Sail type wind mill |
| Answer» D. Sail type wind mill | |
| 21. |
Which windmill blades are made by an array of wooden slats?1. In which of the following, does machine rotor drives through a step up gear box? |
| A. | Horizontal axis with two aerodynamic blades |
| B. | Horizontal axis propeller type wind mill |
| C. | Horizontal axis multi bladed type wind mill |
| D. | Horizontal axis wind mill Dutch type |
| Answer» E. | |
| 22. |
Calculate the air density when 18m/s wind is at 1std atmospheric pressure and 34oC? |
| A. | 1.149 kg/m3 |
| B. | 1.9 kg/m3 |
| C. | 2.88 kg/m3 |
| D. | 5.89 kg/m3 |
| Answer» B. 1.9 kg/m3 | |
| 23. |
When did the development of wind power in India began? |
| A. | 1965 |
| B. | 1954 |
| C. | 1990 |
| D. | 1985 |
| Answer» D. 1985 | |
| 24. |
Name the windmill which has four blades mounted on a central post. |
| A. | Post mill |
| B. | Smock mill |
| C. | Tower mill |
| D. | Fan mill |
| Answer» B. Smock mill | |
| 25. |
'During the day, the air above the land heats up more quickly than the air over water'. |
| A. | True |
| B. | False |
| Answer» B. False | |