Page:Lowell Hydraulic Experiments, 4th edition.djvu/73

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Rules for proportioning turbines.
53

Table IV.

Table for Turbines of different diameters, operating on different falls; assuming that the useful effect is seventy-five per cent, of the power expended; also that the velocity of the interior circumference is fifty-six per cent, of the velocity due the fall; and also that the height between the crowns is 1/10 of the outside diameter.