3. The power output is 30 hp to a centrifugal pump that is discharging 900GPM 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 efficiencyis constant, determine the discharge in GPM, the theoretical head it impartsto the liquid and the power input to the pump4. A fan is used to provide ventilation in a tunnel requires a 3-kW electricmotor to deliver 360 m³/hr. at a static pressure of 300mm of water hasoperated at speed of 500 rpm. It was later found out that the air to bedelivered needs to be increased to a 420 m³/hr. If the fan size remainsconstant find the pressure in meters of water.

Answered: Image /qna-images/answer/7a1443d9-2576-46c7-8e33-be26d3df8083.jpg

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

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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