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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 | |