A disc cam mechanism is required for a machine. A part (the follower) is to move upwards 5.0 cm in 0.2 sec, then remain stationary for 0.1 sec, then move downward 3.0 cm in 0.3 sec, and finally return to the original position in 0.2 sec. a) Determine the required rotational speed of the disk cam b) Sketch a suitable displacement diagram.

When at a point two solid phase changes to one solid phase on cooling then it is known as a) eutectoid point b) eutectic point c) peritectic point d) peritectoid point

If you were designing a bumper for a car, would you prefer it to exhibit elastic or plastic deformation? why? consider the functions of a bumper in both a minor "fender-bender" and a major collision.

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.