Air enters the compressor of an air-standard brayton cycle with a volumetric flow rate of 60 m/s at 0.8 bar, 280 k. the compressor pressure ratio is 20, and the maximum cycle temperature is 2100k. for the compressor, the isentropic efficiency is 92% and for the turbine the isentropic efficiency is 95%. determine (a) the net power developed, in mw. (b) the rate of heat addition in the combustor, in mw. (c) the thermal efficiency of the cycle.

Two flowing streams of argon gas are adiabatically mixed to form a single flow/stream. one stream is 1.5 kg/s at 400 kpa and 200 c while the second stream is 2kg/s at 500 kpa and 100 ? . it is stated that the exit state of the mixed single flow of argon gas is 150 c and 300 kpa. assuming there is no work output or input during the mixing process, does this process violate either the first or the second law or both? explain and state all your assumptions.

What difference(s) did you notice using a pneumatic circuit over hydraulic circuit. explain why the pneumatic piston stumbles when it hits an obstacle.

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