Apply the grid method to each situation. a. Calculate the energy in joules used by a 1 hp pump that is operating for 6 hours. Also, calculate the cost of electricity for this time period. Assume that electricity costs $0.15 per kW-hr. b. A motor is being to used to turn the shaft of a centrifugal pump. Apply Eq. (7.2b) to calculate the power in watts corresponding to a torque of 100 lbf-in and a rotation speed of 850 rpm. c. A turbine produces a power of 7500 ft-lbf/s. Calculate the power in hp and in watts
Apply the grid method to each situation. a. Calculate the energy in joules used by a 1 hp pump that is operating for 6 hours. Also, calculate the cost of electricity for this time period. Assume that electricity costs $0.15 per kW-hr. b. A motor is being to used to turn the shaft of a centrifugal pump. Apply Eq. (7.2b) to calculate the power in watts corresponding to a torque of 100 lbf-in and a rotation speed of 850 rpm. c. A turbine produces a power of 7500 ft-lbf/s. Calculate the power in hp and in watts
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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Apply the grid method to each situation.
a. Calculate the energy in joules used by a 1 hp pump that is operating for 6 hours. Also, calculate the cost of electricity for this
time period. Assume that electricity costs $0.15 per kW-hr.
b. A motor is being to used to turn the shaft of a centrifugal pump.
Apply Eq. (7.2b) to calculate the power in watts corresponding
to a torque of 100 lbf-in and a rotation speed of 850 rpm.
c. A turbine produces a power of 7500 ft-lbf/s. Calculate the
power in hp and in watts
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