Water accelerated by a nozzle enters the impeller a turbine through its outer edge of diam...

Water accelerated by a nozzle enters the impeller a turbine through its outer edge of diameter D with a velocity of V making an angle a with the radial direction at a mass flow rate of . Water leaves the impeller in the radial direction. If the angular speed of the turbine shaft is . show that the maximum power that can be generated by this radial turbine is .