Ashielded thermocouple shows 600 k for hot gases in a duct whose walls are at 400 k. the shield are is large compared to that of the thermocouple. the emissivity of the shield if 0.05. the emissivity of the thermocouple is 0.8. determine the true temperature of the gas. the convective heat transfer coefficient has a value of 300 w/m^2k.

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.

True or false (explain) (110)[111] is a slip system in bcc metals . the {111} family in fcc contains 8 planes. resolved shear stress (rss) in single crystals is just related to the applied stress. critical resolved shear stress (crss) in single crystal metals is direct proportional to the number of defects in the structure

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