Week 3 & 4. TOPIC ; ENERGY SOURCE SUBTOPIC; WIND ENERGY. WHAT IS THE ENERGY SOURCE. Wind Energy, energy contained in the force of the winds blowing across the earth’s surface.
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Windmill is a machine that converts wind into useful energy. This energy is derived from the force of wind acting on oblique blades or sails that radiate from a shaft. The turning shaft may be connected to machinery used to perform such work as milling grain, pumping water, or generating electricity. When the shaft is connected to a load, such as a pump, the device is typically called a windmill. When it is used to generate electricity, it is known as a wind turbine generator.