Consider an air-standard diesel cycle. at the beginning of compression, p1 5 14.0 lbf/in.2 and t1 5 5208r. the mass of air is 0.145 lb and the compression ratio is 17. the maximum temperature in the cycle is 40008r. determine

(a) the heat addition, in btu.
(b) the thermal efficiency.
(c) the cutoff ratio.

Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.

Apiston-cylinder with a volume of 0.25 m3 holds 1 kg of air (r 0.287 k/kgk) at a temperature of 100 c. heat transfer to the cylinder causes an isothermal expansion of the piston until the volume triples. how much heat is added to the piston-cylinder?

Have a greater impact on maintenance productivity than any other support group. (clo5) a)-the top management b)-inventory and purchasing c)-sub-contracting d)-cmms