Theory of Machine
The example of successfully constrained motion is a

All of these
Motion of an I.C. engine valve
Motion of the shaft between a footstep bearing
Piston reciprocating inside an engine cylinder

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Theory of Machine
A body in motion will be subjected to Coriolis acceleration when that body is

Restrained to rotate while sliding over another body
In plane motion which is a resultant of plane translation and rotation
In plane rotation with variable velocity
In plane translation with variable velocity

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Theory of Machine
Crowning on pulleys helps

Increase belt and pulley life
For automatic adjustment of belt position so that belt runs centrally
In decreasing the slip of the belt
In increasing velocity ratio

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