Question

The example of completely constrained motion is

(a) motion of a piston in the cylinder of a steam engine

(b) motion of a square bar in a square hole

(c) motion of a shaft with collars at each end in a circular hole

(d) all of the mentioned

This question was addressed to me during an online interview.

My question is based upon Kinematic Link or Element in chapter Simple Mechanisms of Machine Kinematics

Answer 1

The correct choice is (d) all of the mentioned

For explanation: When the motion between a pair is limited to a definite direction irrespective of the direction of force applied, then the motion is said to be a completely constrained motion. In all the above mechanism, motion is limited, so they all are examples of completely constrained motion.