An oil pump is drawing 35kW of electric power while pumping oil with p = 860 kg/m³ at a rate of 0.1 m³/s. The inlet and outlet diameters of the pipe are 8cm and 12cm, respectively. If the pressure rise of oil in the pump is measured to be 400 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.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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An oil pump is drawing 35kW of electric power while pumping oil with p = 860 kg/m³
at a rate of 0.1 m³/s. The inlet and outlet diameters of the pipe are 8cm and 12cm,
respectively. If the pressure rise of oil in the pump is measured to be 400 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.
(b)
35 kW
12 cm
Pump
Motor
8 cm
Oil
AP = 400 kPa
0.1 m³/s
Transcribed Image Text:An oil pump is drawing 35kW of electric power while pumping oil with p = 860 kg/m³ at a rate of 0.1 m³/s. The inlet and outlet diameters of the pipe are 8cm and 12cm, respectively. If the pressure rise of oil in the pump is measured to be 400 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. (b) 35 kW 12 cm Pump Motor 8 cm Oil AP = 400 kPa 0.1 m³/s
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