Question: Two electric motors are being economically evaluated for the use in unmanned vehicle. Each is capable of delivering 90 horsepower to a necessary application that the vehicle performs. Data for the mutually exclusive motors as follows: Motor X Motor Y $2,500 $3,200 Initial investment Electricity efficiency Annual maintenance Useful life (years) 0.76 0.91 $450 $600 12 12 If the expected usage of the motor is 700 hours per year, what would the cost of electric power have to be (in $ per kWh) before the Motor Y is favored over the Motor X? Use i =10% per year. (1 horsepower = 0.746 kilowatts)
Question: Two electric motors are being economically evaluated for the use in unmanned vehicle. Each is capable of delivering 90 horsepower to a necessary application that the vehicle performs. Data for the mutually exclusive motors as follows: Motor X Motor Y $2,500 $3,200 Initial investment Electricity efficiency Annual maintenance Useful life (years) 0.76 0.91 $450 $600 12 12 If the expected usage of the motor is 700 hours per year, what would the cost of electric power have to be (in $ per kWh) before the Motor Y is favored over the Motor X? Use i =10% per year. (1 horsepower = 0.746 kilowatts)
Sustainable Energy
2nd Edition
ISBN:9781337551663
Author:DUNLAP, Richard A.
Publisher:DUNLAP, Richard A.
Chapter10: Wind Energy
Section: Chapter Questions
Problem 6P
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