An area can be irrigated by pumping water from a nearby river. Two competing installations are being considered. the MARR is 15% per year and electric power for the pumps costs $0.05 per kWh. Recall that 1 hp equals .746 kilowatts.

An area can be irrigated by pumping water from a nearby river. Two competing installations are being considered. The MARR is 15% per year and electric power for the pumps costs $0.05 per kWh. Recall that l horsepower (hp) equals 0.746 kilowatts. a. At what level of operation (hours per year) would you be indifferent between the two pumping systems? If the pumping system is expected to operate 1,500 hours per year, which system should be recommended? b. Perform a sensitivity analysis on the eiciency of Pump A. Over what range of pumping efciency is Pump Apreferred t0 Pump B? Assume 1,500 hours of operation per year. Pump A Pump B 6 in. System 8 in. System Operating load on motor 14 hp 9 hp afrm\" of \"mm 0.50 0.75 Cost of installation $2,490 $4,500 Market value $ 85 $ 10 Useful life 8 years 8 years