Two electric motors (A and B) are being considered to drive a centrifugal pump. Each motor is capable of delivering 40 horsepower (output) to the pumping operation. It is expected that the motors will be in use 800 hours per year. If electricity costs $0.08 per kilowatt-hour and 1 hp = 0.746 kW, which motor should be selected if MARR = 6% per year? Refer to the data below. Initial Cost Electrical Efficiency Annual Maintenance The AW for Motor A is $. (Round to the nearest dollar.) Life 5 years Click the icon to view the interest and annuity table for discrete compounding when the MARR is 6% per year. Motor A $1,700 0.75 $50 C Motor B $900 0.55 $80 5 years

Two electric motors (A and B) are being considered to drive a centrifugal pump. Each motor is capable of delivering 40 horsepower (output) to the pumping operation. It is expected that the motors will be in use 800 hours per year. If electricity costs $0.08 per kilowatt-hour and 1 hp = 0.746 kW, which motor should be selected if MARR = 6% per year? Refer to the data below. Initial Cost Electrical Efficiency Annual Maintenance The AW for Motor A is $. (Round to the nearest dollar.) Life 5 years Click the icon to view the interest and annuity table for discrete compounding when the MARR is 6% per year. Motor A $1,700 0.75 $50 C Motor B $900 0.55 $80 5 years

ENGR.ECONOMIC ANALYSIS

14th Edition

ISBN:9780190931919

Author:NEWNAN

Publisher:NEWNAN

Chapter1: Making Economics Decisions

Section: Chapter Questions

Problem 1QTC

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