An oil pump is drawing 25 kW of electric power while pumping oil with r = 860 kg/m3 at a rate of 0.1 m3/s. The inlet and outlet diameters of the pipe are 8 cm and 12 cm, respectively. If the pressure rise of oil in the pump is measured to be 250 kPa and the motor efficiency is 90 percent, determine the mechanical efficiency of the pump. Take the kinetic energy correction factor to be 1.05.
An oil pump is drawing 25 kW of electric power while pumping oil with r = 860 kg/m3 at a rate of 0.1 m3/s. The inlet and outlet diameters of the pipe are 8 cm and 12 cm, respectively. If the pressure rise of oil in the pump is measured to be 250 kPa and the motor efficiency is 90 percent, determine the mechanical efficiency of the pump. Take the kinetic energy correction factor to be 1.05.
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter7: Conservation Of Energy
Section: Chapter Questions
Problem 32P: Sewage at a certain pumping station is raised vertically by 5.49 m at the rate of 1 890 000 liters...
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Question
An oil pump is drawing 25 kW of electric power
while pumping oil with r = 860 kg/m3 at a rate of
0.1 m3/s. The inlet and outlet diameters of the pipe are
8 cm and 12 cm, respectively. If the pressure rise of oil in
the pump is measured to be 250 kPa and the motor efficiency
is 90 percent, determine the mechanical efficiency
of the pump. Take the kinetic energy correction factor to
be 1.05.
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