A cast steel pinion (0o = 120 MNm2) rotating at 315 rpm drives a cast steel gear of a different grade (0o = 135 MNm-2) at a velocity ratio of 3.0 to 1.

The pinion has 24 teeth, a module of 6 mm and the pressure angle is 200. Given all the previous calculations, is the dynamic load less
than the allowable wear load?

True
Or
False

Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor at -26°c with a volumetric flow rate of 0.18 m3/s. refrigerant exits at 9 bar, 70°c. changes in kinetic and potential energy from inlet to exit can be ignored. determine the volumetric flow rate at the exit, in m3/s, and the compressor power, in kw.

Calculate the bore of a cylinder that has a stroke of 18 inches and an extension time of 6 seconds at a flow rate of 4 gal/min.

An engine runs on the ideal diesel cycle. the cycle has a compression ratio of 20 and a cutoff ratio of 2. the highest temperature in the cycle is 1200 k. if the heat into the system is 300 kj/kg of working fluid and using variable specific heats determine the work produced per mass of working fluid