Engineering, 12.03.2020 06:37, TKwan
(20pts) A thermocouple junction, which may be approximated as sphere, is to be used for temperature measurement in a gas stream. The convection coefficient between the junction surface and the gas is h = 400 W/m2·K and the junction thermophysical properties are k = 20 W/m·K, c = 400 J/kg·K and rho = 8500 kg/m3. Determine the junction diameter needed for the thermocouple to have a time constant of 2 s. If the junction is at 25 °C and is placed in a gas stream that is at 200 °C, estimate the temperature of the junction after 10 minutes.
Answers: 3
Engineering, 04.07.2019 18:10, sarahgrindstaff123
Afluid flows with a velocity field given by v=(x/t)i.. determine the local and convective accelerations when x=3 and t=1.
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Engineering, 04.07.2019 18:20, kendrawalraven
The characteristic roots of a dynamic system are: 1.7920 1.8160 i, -1.7920 1.8160 i, -0.4160 what is the order of this system? what are the settling time and damping ratio of the system?
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Engineering, 04.07.2019 19:10, lexie223
Acircular aluminum shaft mounted in a journal is shown. the symmetric clearance gap between the shaft and journal is filled with sae 10w-30 oil at t 30°c. the shaft is caused to turn by the attached mass and cord. develop and solve a differential equation for the angular speed of the shaft as a function of time.
Answers: 2
(20pts) A thermocouple junction, which may be approximated as sphere, is to be used for temperature...
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