Question: 2 . A three - blade wind turbine has a speed of 1 4 0 rpm for a rated speed of 8 m / s

2. A three-blade wind turbine has a speed of 140 rpm for a rated speed of 8 m/s, coefficient of power=0.43, mechanical efficiency of 90% and electrical efficiency of 82%. Estimate the electrical output of a turbine having a blade length of 12 m. Take =1.226/3.

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