Cho điểm A có tọa độ X A; Y A; Z A; H overline a y vẽ đổ thức điểm A và xét xem điểm A thuộc góc phần tâm nào ? P. An 1 1 -2 2 2 -4 -2 3 3 -6 3 4 4 -2 -2 5 5 -5 10 6 -1 7 -2 -4 4 8 -3 -3 6 9 -4 2 -8 10 -5 Toa d hat 0; X A; T A; Z A -10

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.

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

Which of the following ziegler nichols tuning methods the response of the controller to a step input should exhibit an s-shaped curve? a)-open loop mode b)-closed loop mode c)-both modes (open & closed) d)-none of the modes (open & closed)