Wind Energy MCQ Questions and Answers for Practice

1. Which force is responsible for forcing the global winds towards westernly direction

1. Coriolis
2. Gravitational
3. Centripetal
4. Centrifugal

2. Air layer from 100m that extends up to the gradient height is known as

1. Surface layer
2. Ekman layer
3. Boundary layer
4. None of the above

3. At gradient height the shear force is

1. Zero
2. Minimum
3. Maximum
4. None of the above

4. By how much has the price of American wind power decreased since the 1980s?

1. 60 percent
2. 90 percent
3. 80 percent
4. 70 percent

5. Global Cold wind generated from Oceans moves to

1. Mountains
2. Equator
3. Plain areas
4. Poles

6. Global Cold wind move from

1. Polar to equatorial region
2. Equatorial to polar region
3. Equatorial to oceanic region
4. Oceanic to Equatorial region

7. Global winds towards westernly direction are known as

1. Trade winds
2. Western winds
3. Eastern winds
4. None of the above

8. How many blades does a modern wind turbine have?

1. 2
2. 3
3. 4
4. 5

9. How many different components does it take to build a utility-scale wind turbine?

1. More than 800
2. More than 80
3. More than 8,000
4. More than 80,000

10. How many jobs were supported by the U.S. wind power industry in 2018?5

1. 5000
2. 114000
3. 36000
4. 73000

11. How many offshore wind farms are there in the U.S.?

1. 1
2. 2
3. 3
4. 4

12. Low solidity rotors use which of the following force for rotation

1. Drag
2. Lift
3. Centrifugal
4. Centripetal

13. Roughly how tall are most utility-scale wind turbine towers in the U.S.?

1. 65 meters (213 feet)
2. 114 meters (374 feet)
3. 88 meters (289 feet)
4. 140 meters (460 feet)

14. The amount of energy available in the wind at any instant is proportional to...............of the wind speed

1. Square root power of two
2. Square root power of three
3. Square power
4. Cube power

15. The atmosphere with uniform wind speed is called the..............atmosphere

1. Plain
2. Surface
3. Free
4. Shear