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See picture below. mail-attachment.googleusercontent.com An area can be irrigate

ID: 2716985 • Letter: S

Question

See picture below. mail-attachment.googleusercontent.com An area can be irrigated by pumping water from a nearby river. Two competing installations are being considered. The MARR is 12% per year. At what level ofoperation (hours per year) would you be indifferent between the two pumping systems. The table below gives the different estimates needed to do the calculations. nitial cost,S Electrical efficiency Salvage value, S Operating load on motor Electric power costs, S Pump A Pump B 2410 4820 60% 75% 80 0 15 hp 0 hp 0.06/kwh 0.06/kwh (lhp 0.746 kw) Useful life, years

Explanation / Answer

See picture below. mail-attachment.googleusercontent.com An area can be irrigate