Acarbon steel tube has an outside diameter of 75 mm and a wall thickness of 3 mm. the tube is to carry an internal hydraulic pressure given as p~n(20, 1) mpa. the material of the tube has a yield strength of sy ~ n(350, 29) mpa. find the reliability using thin-wall theory.

Water vapor initially at 10 bar and 400 °c is contained within a piston-cylinder assembly. the water lost heat to the surrounding according to isochoric (iso-volumetric) process until its temperature is 150 °c. the water is then condensed isothermally to saturated liquid. for the water as a system, calculate the work in kj/kg