Consider F and C below. F(x, y, z) = yzexzi + exzj + xyexzk, C: r(t) = (t2 + 3)i + (t2 − 1)j + (t2 − 2t)k, 0 ≤ t ≤ 2 (a) Find a function f such that F = ∇f. f(x, y, z) = (b) Use part (a) to evaluate C F · dr along the given curve C.

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.

Inadequate stores control is not an obstacle to effective work order system. (clo4) a)-true b)-false