Two electric motors are being considered to drive a centrifugal pump Each motor is capable of...

Transcribed Image Text:

Two electric motors are being considered to drive a centrifugal pump Each motor is capable of delivering 80 horsepower (output) to the pumping operation. It is expected that the motors will be in use 1,500 hours per year and the MARR = 10% per year (1 hp = 0.746 kW) a. If electricity costs $X per kilowatt-hour, calculate the annual cost of electrical power for each motor b. What cost of electricity ($/kWh) makes the two pumps breakeven (ie have the same equivalent annual cost)? Assume repeatability and MVs = $0. c. Choose the graph to illustrate your answer to Part (b) d. Which motor should be selected? Click the icon to view the datatable for the additional information about two alternatives. Click the icon to view the interest and annuity table for discrete compounding when the MARR is 10% per year a. The annual cost of electrical power for Motor A is $( XX) (Round to two decimal places) Two electric motors are being considered to drive a centrifugal pump Each motor is capable of delivering 80 horsepower (output) to the pumping operation. It is expected that the motors will be in use 1,500 hours per year and the MARR = 10% per year (1 hp = 0.746 kW) a. If electricity costs $X per kilowatt-hour, calculate the annual cost of electrical power for each motor b. What cost of electricity ($/kWh) makes the two pumps breakeven (ie have the same equivalent annual cost)? Assume repeatability and MVs = $0. c. Choose the graph to illustrate your answer to Part (b) d. Which motor should be selected? Click the icon to view the datatable for the additional information about two alternatives. Click the icon to view the interest and annuity table for discrete compounding when the MARR is 10% per year a. The annual cost of electrical power for Motor A is $( XX) (Round to two decimal places)