What horsepower must an electric motor develop to operate a pump that pumps water at a rate of 24 000 liters per hour (L/h) up a vertical distance of 50 m if the efficiency of the pump is 90 percent? The gravitational force on 1 L of water is 9.78 N. % Efficiency = Pout/Pin 24000 L/hr * 9.78N/1L*50m
What horsepower must an electric motor develop to operate a pump that pumps water at a rate of 24 000 liters per hour (L/h) up a vertical distance of 50 m if the efficiency of the pump is 90 percent? The gravitational force on 1 L of water is 9.78 N. % Efficiency = Pout/Pin 24000 L/hr * 9.78N/1L*50m
Glencoe Physics: Principles and Problems, Student Edition
1st Edition
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Paul W. Zitzewitz
Chapter10: Work, Energy And Machines
Section: Chapter Questions
Problem 68A
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What horsepower must an electric motor develop to operate a pump that pumps water at a rate of 24 000 liters per hour (L/h) up a vertical distance of 50 m if the efficiency of the pump is 90 percent? The gravitational force on 1 L of water is 9.78 N. % Efficiency = Pout/Pin 24000 L/hr * 9.78N/1L*50m
The Ans. is 4.86 hp
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