(si units) a low-carbon steel plate is 270 mm wide and 25 mm thick. a cluster mill with working rolls of radius = 600 mm is used, and roll speed = 30 m/min. it is reduced in one pass to a thickness of 20 mm. strength coefficient = 500 mpa, and strain hardening exponent = 0.25. determine (a) roll force, (b) roll torque, and (c) power required to perform the operation.

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.

Determine whether or not it is possible to compress air adiabatically from k to 140 kpa and 400 k. what is the entropy change during this process?

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