- 1. Windmills are structures designed to convert wind energy into mechanical energy, typically used to grind grain or pump water. They consist of a tall tower with blades that rotate when the wind blows, generating power that can be harnessed for various purposes. Windmills have been used for centuries in many parts of the world and are seen as symbols of sustainability and eco-friendliness. In modern times, windmills have been adapted for electricity generation, with large-scale wind farms becoming a common sight in many countries as a clean energy source.
What is the purpose of a wind turbine?
A) To produce water
B) To generate electricity
C) To provide shelter
D) To grind flour
- 2. Which country is the largest producer of wind energy?
A) Germany
B) China
C) United States
D) India
- 3. What is the purpose of the yaw system in a wind turbine?
A) To regulate electricity output
B) To control tower height
C) To keep the rotor facing into the wind
D) To adjust blade pitch
- 4. What is the main advantage of offshore wind farms over onshore?
A) Lower installation costs
B) Less environmental impact
C) Higher and more consistent wind speeds
D) Easier maintenance
- 5. What is the purpose of the anemometer on a wind turbine?
A) Measures wind speed
B) Controls blade pitch
C) Generates electricity
D) Adjusts tower height
- 6. In which country did the modern wind turbine originate?
A) Denmark
B) China
C) Germany
D) United States
- 7. What is the name of the process where wind turbines can be shut down due to oversupply of electricity?
A) Oversaturation
B) Curtailment
C) Overdrive
D) Overproduction
- 8. What is the unit of power output for windmills?
A) Watt
B) Ohm
C) Ampere
D) Volt
- 9. How do wind turbines affect bird populations?
A) Improve air quality
B) Collisions with rotor blades can pose a risk to some bird species
C) Provide nesting opportunities
D) Increase prey availability
- 10. Which type of windmills are often used for pumping water in rural areas?
A) Sails
B) Windpumps
C) Turbines
D) Panemones
- 11. Which of the following is a type of offshore wind turbine foundation?
A) Tension leg platform
B) Gravity based
C) Monopile
D) Tripod
- 12. What is the device that measures the wind speed in a windmill called?
A) Hygrometer
B) Thermometer
C) Anemometer
D) Barometer
- 13. What material are most modern windmill blades made of?
A) Fiberglass
B) Wood
C) Steel
D) Aluminum
- 14. Which wind turbine component is responsible for converting mechanical energy into electrical energy?
A) Gearbox
B) Nacelle
C) Generator
D) Blades
- 15. What is the average lifespan of a windmill?
A) 30-35 years
B) 20-25 years
C) 10-15 years
D) 5-10 years
- 16. What is the purpose of the gearbox in a wind turbine?
A) To increase the rotation speed for the generator
B) To regulate electricity output
C) To adjust blade angle
D) To measure wind speed
- 17. What is the structure that supports a windmill's blades called?
A) Nacelle
B) Hub
C) Rotor
D) Swept area
- 18. What is the process of turning a windmill to face the wind called?
A) Tilting
B) Pitching
C) Yawing
D) Rolling
- 19. How many blades do most modern wind turbines have?
A) 2
B) 3
C) 5
D) 4
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