Acylindrical powder compact with an outer diameter do and inner diameter di is to be pressed by means of single-action compaction. derive an equation analogous to eq. 7.71 that would be appropriate for this geometry. hint: for this geometry, the normal force on the compact, fn, may be represented in terms of the applied pressure as follows: f= z x p x pi ( do + di ) dh

During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false

Afull journal bearing has a journal diameter of 27 mm, with a unilateral tolerance of -0.028 mm. the bushing bore has a diameter of 27.028 mm and a unilateral tolerance of 0.04 mm. the l/d ratio is 0.5. the load is 1.3 kn and the journal runs at 1200 rev/min. if the average viscosity is 50 mpa-s, find the minimum film thickness, the power loss, and the side flow for the minimum clearance assembly.

Have a greater impact on maintenance productivity than any other support group. (clo5) a)-the top management b)-inventory and purchasing c)-sub-contracting d)-cmms