Engineering, 30.06.2020 18:01 jakiyahporter0817
Compare alternatives on the basis of their capitalized costs at i = 10% per year.
Alternative E F G
First cost, $ −50,000 −300,000 −900,000
AOC, $ per year −30,000 −10,000 −3,000
Salvage value, $ 5,000 70,000 200,000
Life, years 2 4 [infinity]
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The force on a cutting tool are 2600n vertically downward and 2100 horizontal. determine the resultant force acting on the tool and the angle at which it acts.
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The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false
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Abrake has a normal braking torque of 2.8 kip in and heat-dissipating cast-iron surfaces whose mass is 40 lbm. suppose a load is brought to rest in 8.0 s from an initial angular speed of 1600 rev/min using the normal braking torque; estimate the temperature rise of the heat dissipating surfaces.
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Engineering, 04.07.2019 18:10
Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10
Answers: 1
Compare alternatives on the basis of their capitalized costs at i = 10% per year.
Alternative E F G...
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