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Output Horsepower and Efficiency

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A fully loaded 440 V, three phase motor draws 12.4 A at 86% power factor (pf). Its speed is 1730 rpm and its torque output to a mechanical load is 29.1 lb-ft x 1.356 = 39.5 Nm. What is (a) the output horsepower and (b) the efficiency?

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This complete solution provides simple calculations and answers to determine the output horsepower and efficiency of the three-phase motor.

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