“Today, wind energy is very popular in the U.S, Spain, Denmark, and India. It is mostly used in Germany.”[16]“Wind power promises a clean and free source of electricity that would reduce our dependence on imported fossil fuels and the output of greenhouse gases and other pollution”[1]. That is why wind is one of important source of non-conventional energy. It is very cheap, pollution-free and environmental friendly [2]. “Since wind depends on sun, it is a form of solar energy. As long as the sun…
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