1. A small wind turbine with a blade of diameter 14m is subjected to a wind turbine of velocity 9m/s. Its efficiency is 75%.

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1. A small wind turbine with a blade of diameter 14m is subjected to a wind turbine of velocity 9m/s. Its efficiency is 75%. Calculate the power and energy produced by the turbine per year. Density of air is 2.863 Kg/m. [5 Mark] 2. Write advantages & limitations of Fuel Cells.

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