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determine the overall efficiency of a motor that deliveries 2 horsepower to a load if it draws 7.5 amperes when connected to a 240 volt supply.

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Pi = E*I = 240 * 7.5 = 1800 W.

2hp * 746W/hp = 1492 W.

Eff. = Po/Pi = 1492/1800 = 0.829 = 82.9%.

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