(a) calculate the ratio of the maximum radial stresses at the edge and centre of a flat circular steel plate clamped at its periphery and subjected to a uniform pressure p. ν=0.29. (b) calculate the ratio of the maximum tangential stresses at the edge and centre.

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.

Draw the engineering stress-strain curve for (a) bcc; (b) fcc metals and mark important points.

Compute the pressure drop of 30°c air flowing with a mean velocity of 8 m/s in a circular sheet-metal duct 300 mm in diameter and 15 m long. use a friction factor, f 0.02, and pair = 1.1644 kg/m a. 37.26 pa b. 25.27 pa n c. 29.34 pa d. 30.52 pa