Engineering, 01.10.2019 18:30 coolgirl10020031
Nitrogen is stored in a tank at a pressure of 20 bar and 300 k. the tank has a capacity of 2.0 m3. gas is allowed to escape through a partially opened valve until the pressure reaches 2 bar. treat nitrogen gas as an ideal gas with a constant heat capacity of cp = 29.3 j/(mol k). consider two di erent assumptions about the relative rates of mass and heat exchange: (a) adiabatic: the process occurs suciently rapidly that there is negligible heat ow between the gas in the tank and its surroundings. (b) isothermal: gas leaks out of the tank so slowly that the temperature in the tank remains at 300 throughout the process, due to heat exchange with the surroundings.
Answers: 2
Engineering, 03.07.2019 14:10
If the thermal strain developed in polyimide film during deposition is given as 0.0044. assume room temperature is kept at 17.3 c, and thermal coefficient of expansion for the film and the substrate are 54 x 10^-6c^-1 and 3.3 x 10^-6c^-1respectively. calculate the deposition temperature.
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Engineering, 03.07.2019 23:20
Two technicians are discussing the intake air temperature (iat) sensor. technician a says that the computer uses the iat sensor as a backup to the engine coolant temperature (ect) sensor. technician b says that the powertrain control module (pcm) will subtract the calculated amount of fuel if the air measures hot. who is correct
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Engineering, 04.07.2019 18:10
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Engineering, 04.07.2019 18:20
Water vapor initially at 10 bar and 400 °c is contained within a piston-cylinder assembly. the water lost heat to the surrounding according to isochoric (iso-volumetric) process until its temperature is 150 °c. the water is then condensed isothermally to saturated liquid. for the water as a system, calculate the work in kj/kg
Answers: 2
Nitrogen is stored in a tank at a pressure of 20 bar and 300 k. the tank has a capacity of 2.0 m3. g...
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