Imagine that as an engineering intern you have been assigned the task of selecting a motor for a pump. After reviewing motor catalogs you narrow your choice to two motors that are rated at 1.5 kW. Additional information collected is shown in an accompanying table. The pump is expected to run 4200 hours every year. After checking with your electric utility company, you determine the average cost of electricity is about 10 cents per kWh. Based on the information given here, which one of the motors will you recommend to be purchased? Assume i = 8%.
Motor-X:
The operating cost for Motor-X is determined from:
PW = -400-(840+12)(P/A, 8%, 5)
PW = -400-(840+12)(3.9927)
PW = -3801.78
Motor-Y:
The operating cost for Motor-Y is:
PW = -500-(741.17+10)(P/A, 8%, 5)
PW = -500-(741.17+10)(3.9927)
PW = -3499.19
Choose Motor-Y
You might also like to view...
Nematodes live in the soil and swim in soil water to move from plant to plant
Indicate whether the statement is true or false
The rate of release of nitrogen from SCU depends on the ____________________ of the coating
Fill in the blank(s) with correct word
Analyze the reinforced concrete frame in Figure P14.7. Determine all reactions. E is constant.
Technician A says adaptive strategy could also be called learning capacity. Technician B says adaptive strategy could also be called self-correction ability. Who is correct??
A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B