MCQOPTIONS
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MCQOPTIONS
This section includes 16 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. |
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 | |
| 2. |
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 | |
| 3. |
When was the Darrieus type machine invented? |
| A. | 1925 |
| B. | 1932 |
| C. | 1929 |
| D. | 1948 |
| Answer» B. 1932 | |
| 4. |
WHEN_WAS_THE_DARRIEUS_TYPE_MACHINE_INVENTED??$ |
| A. | 1925 |
| B. | 1932 |
| C. | 1929 |
| D. | 1948 |
| Answer» B. 1932 | |
| 5. |
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 | |
| 6. |
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 | |
| 7. |
Aero turbine is the fraction of power in the wind through the swept area which is converted into useful mechanical shaft power is called _____________ |
| A. | Coefficient of performance |
| B. | Coefficient of variation |
| C. | Coefficient of lift |
| D. | Coefficient of spin |
| Answer» B. Coefficient of variation | |
| 8. |
Which type of vertical wind machine consists of spinning cylinders? |
| A. | Cup anemometer |
| B. | Savonius rotor |
| C. | Darrieus type rotor |
| D. | Magnus effect rotor |
| Answer» E. | |
| 9. |
Why is Savonius rotor not suitable for installation? |
| A. | Because of long drive shaft |
| B. | Because of its low capacity motor |
| C. | Because of its typical blade design |
| D. | Due to the light material it is made of |
| Answer» B. Because of its low capacity motor | |
| 10. |
Which type of axis does a Savonius Rotor has? |
| A. | Horizontal axis |
| B. | Mediolateral axis |
| C. | Vertical axis |
| D. | Lateral Axis |
| Answer» D. Lateral Axis | |
| 11. |
Which of the following type of turbine or the rotor requires relatively low velocity winds for operation? |
| A. | Cup anemometer |
| B. | Savonius rotor |
| C. | Darrieus type rotor |
| D. | Magnus effect rotor |
| Answer» C. Darrieus type rotor | |
| 12. |
What units does the anemometer measure in? |
| A. | Feet per minute |
| B. | Liters per minute |
| C. | Centimeters per minute |
| D. | Meter per seconds |
| Answer» B. Liters per minute | |
| 13. |
Which is the device that measures wind direction and its intensity? |
| A. | Wind socks |
| B. | Weather vane |
| C. | Pin wheels |
| D. | Anemometers |
| Answer» E. | |
| 14. |
Which is the wind direction showing device that spins perpendicularly? |
| A. | Wind socks |
| B. | Weather vane |
| C. | Pin wheels |
| D. | Anemometers |
| Answer» D. Anemometers | |
| 15. |
A device which is used as device for showing direction wind as well used as a decorative purpose? |
| A. | Wind socks |
| B. | Weather vane |
| C. | Pin wheels |
| D. | Anemometers |
| Answer» C. Pin wheels | |
| 16. |
In which wind measuring device a tubular piece of thin flexible fabric hanged vertically to determine direction? |
| A. | Wind socks |
| B. | Weather vane |
| C. | Pin wheels |
| D. | Anemometers |
| Answer» B. Weather vane | |