A pump draws 20 kW of electrical power while pumping oil with a density of 780 kg/m^3 at a flow rate of 0.3 m^3/s. The diameters of the inlet and outlet pipes of the pump are 7 cm and 12 cm, respectively. Since the pressure increase in the pump is 220 kPa and the motor efficiency is 91%, determine the mechanical efficiency of the pump. (Ignore the kinetic energy correction factor, α=1, Ignore the height differences inside the pump, the head loss in the pump hL=0.5
A pump draws 20 kW of electrical power while pumping oil with a density of 780 kg/m^3 at a flow rate of 0.3 m^3/s. The diameters of the inlet and outlet pipes of the pump are 7 cm and 12 cm, respectively. Since the pressure increase in the pump is 220 kPa and the motor efficiency is 91%, determine the mechanical efficiency of the pump. (Ignore the kinetic energy correction factor, α=1, Ignore the height differences inside the pump, the head loss in the pump hL=0.5
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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A pump draws 20 kW of electrical power while pumping oil with a density of 780 kg/m^3 at a flow rate of 0.3 m^3/s. The diameters of the inlet and outlet pipes of the pump are 7 cm and 12 cm, respectively. Since the pressure increase in the pump is 220 kPa and the motor efficiency is 91%, determine the mechanical efficiency of the pump. (Ignore the kinetic energy correction factor, α=1, Ignore the height differences inside the pump, the head loss in the pump hL=0.5)
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