Engineering, 26.06.2020 23:01 ineedhelpireallydo
Suppose that a steel of eutectoid composition is cooled to 675°C (1250°F) from 760°C (1400°F) in less than 0.5 s and held at this temperature.
Required:
a. How long will it take for the austenite-to-pearlite reaction to go to 50% completion? To 100% completion?
b. Estimate the hardness of the alloy that has completely transformed to pearlite.
Answers: 3
Engineering, 04.07.2019 18:10
Fluids at rest possess no flow energy. a)- true b)- false
Answers: 3
Engineering, 04.07.2019 18:10
Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor at -26°c with a volumetric flow rate of 0.18 m3/s. refrigerant exits at 9 bar, 70°c. changes in kinetic and potential energy from inlet to exit can be ignored. determine the volumetric flow rate at the exit, in m3/s, and the compressor power, in kw.
Answers: 1
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
Engineering, 04.07.2019 18:10
The drive force for diffusion is 7 fick's first law can be used to solve the non-steady state diffusion. a)-true b)-false
Answers: 1
Suppose that a steel of eutectoid composition is cooled to 675°C (1250°F) from 760°C (1400°F) in les...
History, 15.04.2020 02:27
History, 15.04.2020 02:27
Chemistry, 15.04.2020 02:27
English, 15.04.2020 02:27
Mathematics, 15.04.2020 02:27
Mathematics, 15.04.2020 02:27