Consider a carnot cycle of a closed system that operates between temperature reservoirs at 300 k and 1200 k. if the minimum cycle pressure is 45 kpa, and the total heat input is 120 kj/kg, what is the : a) thermal efficiency and net work of the cycle; b) the peak pressure of the cycle? you may assume air with constant specific heats, a specific heat ratio of 1.4 and gas constant of 0.287.

Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.

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

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