A bar ABCD has three segments where the second segment is loaded by a constant distributed torque along its entire length. The bar is fixed at both ends. The total length of the bar is L. The two end segments have a diameter of d 1 and the middle segment has a diameter of d2 . Each segment has a shear modulus of G. Use d 1.

The catalogue for a refrigerant 22, four-cylinder, hermetic compressor operating at 29 r/s. a condensing temperature of 40°c and an evaporating temperature of -4°c shows a refrigeration capacity of 115 kw. at this operating point, the motor (its efficiency is 90 percent) draws 34.5 kw. the bore of the cylinders is 87 mm and the piston stroke is 70 mm. the performance data are based on 8°c of sub-cooling of the liquid leaving the condenser. compute (a) the actual volumetric efficiency and (b) the compression efficiency.