Anatural-circulation pillow-block bearing with l y d 5 1 has a journal diameter d of 2.500 inwith a unilateral tolerance of 2 0.001 in. the bushing bore diameter b is 2.504 in with a uni-lateral tolerance of 0.004 in. the shaft runs at an angular speed of 1120 rev/min; the bearinguses sae grade 20 oil and carries a steady load of 300 lbf in shaft-stirred air at 70°f with a 5 1. the lateral area of the pillow-block housing is 60 in 2 . perform a design assessmentusing minimum radial clearance for a load of 600 lbf and 300 lbf. use trumpler’s criteria.

Agas contained within a piston-cylinder assembly e end nation about same energy states, 1 and 2, where pi 10 bar, v undergoes two processes, a and b, between the sam 0.1 m3, ui-400 kj and p2 1 bar, v2 1.0 m2, u2 200 kj: process a: process from 1 to 2 during which the pressure- volume relation is pv constant process b: constant-volume process from state 1 to a pressure of 2 bar, followed by a linear pressure-volume process to +20 0 state 2 kinetic and potential energy effects can be ignored. for each of the processes a and b, (a) sketch the process on p-v coordinates, (b) evaluate the work, in kj, and (c) evaluate process the heat transfer, in kj