A wind turbine of the 3-bladed propeller type, having 50% efficiency, generates 2 MWe when the wind speed is 14 m/s. The air density is 1.2 kg/m3. Under these conditions, the linear speed of the blade tips is 98 m/s. What is the propeller rotation rate in rpm? What is the propeller shaft torque? What is the torque if the turbine above has two instead of three blades?