Nitrogen gas is compressed in a polytropic process (n=-1.8). the initial temperature and pressure are 285 k and 150 kpa, respectively. the initial volume is 1 m3. the process completes at a final pressure of 600 kpa. • determine the mass of nitrogen in the closed system determine the final volume. determine the boundary work

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.

Give heat transfer applications for the following, (i) gas turbines (propulsion) ) gas turbines (power generation). (iii) steam turbines. (iv) combined heat and power (chp). (v) automotive engines

The filament of an incandescent lamp has a temperature of 2000k. calculate the fraction of radiation emitted in the visible light band if the filament is approximated as blackbody