Engineering, 11.03.2020 02:49, ultimatesaiyan
Recent development near Eugene, Oregon, has identifi ed a need for improved access to Interstate 5 at one location. Civil engineers and public planners are considering three alternative access plans. Benefi ts are estimated for the public in general; disbenefi ts primarily affect some local proprietors who will see traffi c pattern changes as undesirable. Costs are monetary for construction and upkeep, and savings are a reduction in cost of those operations today that will not be necessary in the future. All fi gures are relative to the present situation, retention of which is still an alternative, and are annualized over the 20-year planning horizon. Alternative A B C Benefi ts $200,000 $300,000 $400,000 Disbenefi ts $37,000 $69,000 $102,000 Costs $150,000 $234,000 $312,000 Savings $15,000 $31,000 $42,000 a) What is the B/C ratio for each of these alternatives ?b) Using incremental B/C ratio analysis, which alternative should be selected ?c) Determine the value of B - C for each alternative.
Answers: 1
Engineering, 03.07.2019 15:10, brooklyn674
Apiston-cylinder with a volume of 0.25 m3 holds 1 kg of air (r 0.287 k/kgk) at a temperature of 100 c. heat transfer to the cylinder causes an isothermal expansion of the piston until the volume triples. how much heat is added to the piston-cylinder?
Answers: 3
Engineering, 04.07.2019 18:10, lillygrl100
For the closed feedwater heater below, feedwater enters state 3 at a pressure of 2000 psia and temperature of 420 °f at a rate of ix10 ibhr. the feedwat extracted steam enters state 1 at a pressure of 1000 psia and enthalpy of 1500 btu/lbm. the extracted er leaves at an enthalpy of 528.7 btu/lbm steam leaves as a saturated liquid. (16) a) determine the mass flow rate of the extraction steam used to heat the feedwater (10) b) determine the terminal temperature difference of the closed feedwater heater
Answers: 3
Engineering, 04.07.2019 18:20, kodyclancy
Aquick transition of the operating speed of a shaft from its critical speed will whirl amplitude. (a) increase (b) limit (c) not affect (d) zero
Answers: 2
Recent development near Eugene, Oregon, has identifi ed a need for improved access to Interstate 5 a...
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