Engineering, 27.12.2019 02:31 alexisbreton
Rank the following iron-carbon alloys and associated microstructures from the highest to the lowest tensile strength: explain why.
a. 0.25 wt%c with spheroidite
b. 0.25 wt%c with coarse pearlite
c. 0.6 wt%c with fine pearlite
d. 0.6 wt%c with coarse pealite
Answers: 2
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Fluids at rest possess no flow energy. a)- true b)- false
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Engineering, 04.07.2019 18:10
Aflywheel accelerates for 5 seconds at 2 rad/s2 from a speed of 20 rpm. determine the total number of revolutions of the flywheel during the period of its acceleration. a.5.65 b.8.43 c. 723 d.6.86
Answers: 2
Engineering, 04.07.2019 18:10
Aplate clutch has a single pair of mating friction surfaces 250-mm od by 175-mm id. the mean value of the coefficient of friction is 0.30, and the actuating force is 4 kn. a) find the maximum pressure and the torque capacity using the uniform-wear model. b) find the maximum pressure and the torque capacity using the uniform-pressure model.
Answers: 3
Engineering, 04.07.2019 18:10
Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.
Answers: 3
Rank the following iron-carbon alloys and associated microstructures from the highest to the lowest...
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