Engineering, 14.04.2020 22:51 irene27
Suppose that a steel of eutectoid composition is cooled to 550°C from 760°C in less than 0.5 s and held at this temperature. (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
Another question on Engineering
Engineering, 04.07.2019 18:10
Thermal stresses are developed in a metal when its a) initial temperature is changed b) final temperature is changed c) density is changed d) thermal deformation is prevented e) expansion is prevented f) contraction is prevented
Answers: 2
Engineering, 04.07.2019 18:10
Atmospheric air has a temperature (dry bulb) of 80° f and a wet bulb temperature of 60° f when the barometric pressure is 14.696 psia. determine the specific humidity, grains/lb dry air. a. 11.4 c. 55.8 d. 22.5 b. 44.1
Answers: 1
Engineering, 04.07.2019 18:20
Steam enters a converging nozzle at 3.0 mpa and 500°c with a at 1.8 mpa. for a nozzle exit area of 32 cm2, determine the exit velocity, mass flow rate, and exit mach number if the nozzle: negligible velocity, and it exits (a) is isentropic (b) has an efficiency of 94 percent
Answers: 2
Engineering, 04.07.2019 18:20
Ahe-xe mixture containing a 0.75 mole fraction of helium is used for cooling electronics in an avionics application. at a temperature of 300 k and atmospheric pressure, calculate the mass fraction of helium and the mass density, molar concentration and molecular weight of the mixture. if the cooling capacity is 10 l, what is the mass of the coolant?
Answers: 3
You know the right answer?
Suppose that a steel of eutectoid composition is cooled to 550°C from 760°C in less than 0.5 s and h...
Questions
Social Studies, 09.12.2021 04:20
History, 09.12.2021 04:20
Mathematics, 09.12.2021 04:20
Mathematics, 09.12.2021 04:20
SAT, 09.12.2021 04:20
History, 09.12.2021 04:20
Chemistry, 09.12.2021 04:20
Mathematics, 09.12.2021 04:30
Mathematics, 09.12.2021 04:30
