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3. The power output is 30 hp to a centrifugal pump that is discharging 900 GPM at which operates at 180 rpm against a head 120 ft., 220Volts, 3 phase, 60Hz. If the pump is modified to operate at 120 rpm, assuming its efficiency is constant, determine the discharge in GPM, the theoretical head it imparts to the liquid and the power input to the pump

3. The power output is 30 hp to a centrifugal pump that is discharging 900 GPM at which operates at 180 rpm against a head 120 ft., 220Volts, 3 phase, 60Hz. If the pump is modified to operate at 120 rpm, assuming its efficiency is constant, determine the discharge in GPM, the theoretical head it imparts to the liquid and the power input to the pump

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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3. The power output is 30 hp to a centrifugal pump that is discharging 900 GPM at which operates at 180 rpm against a head 120 ft., 220Volts, 3 phase, 60Hz. If the pump is modified to operate at 120 rpm, assuming its efficiency is constant, determine the discharge in GPM, the theoretical head it imparts to the liquid and the power input to the pump 4. A fan is used to provide ventilation in a tunnel requires a 3-kW electric motor to deliver 360 m³/hr. at a static pressure of 300mm of water has operated at speed of 500 rpm. It was later found out that the air to be delivered needs to be increased to a 420 m³/hr. If the fan size remains constant find the pressure in meters of water.
Transcribed Image Text:3. The power output is 30 hp to a centrifugal pump that is discharging 900 GPM at which operates at 180 rpm against a head 120 ft., 220Volts, 3 phase, 60Hz. If the pump is modified to operate at 120 rpm, assuming its efficiency is constant, determine the discharge in GPM, the theoretical head it imparts to the liquid and the power input to the pump 4. A fan is used to provide ventilation in a tunnel requires a 3-kW electric motor to deliver 360 m³/hr. at a static pressure of 300mm of water has operated at speed of 500 rpm. It was later found out that the air to be delivered needs to be increased to a 420 m³/hr. If the fan size remains constant find the pressure in meters of water.
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