Awell-insulated diffuser is supplied with carbon dioxide at 110 kpa, 300 k, and 300 m/s. it is claimed that this diffuser will deliver the gas at 240 kpa and 52 m/s. assuming variable specific heats, determine: (a) the diffuser exit temperature (k) (b) if the process is reversible, irreversible, or impossible. (c) if irreversible, the entropy generation rate for the gas (kj/kg. k).

Consider a large isothermal enclosure that is maintained at a uniform temperature of 2000 k. calculate the emissive power of the radiation that emerges from a small aperture on the enclosure surface. what is the wavelength ? , below which 10% of the emission is concentrated? what is the wavelength ? 2 above which 10% of the emission is concentrated? determine the wavelength at which maximum spectral emissive power occurs. what is the irradiation incident on a small object placed inside the enclosure?

The higher the astm grain size number, the finer the gran is. a)-true b)-false

Aheavily insulated piston-cylinder device contains 0.02 m3 of steam at 300 kpa and 200 °c. 1.2 mpa. d this process. team is now compressed in a reversible manner to a pressure of etermine the entropy change and the work done on the steam during this process