Question

The sliding pairs, turning pairs and screw pairs form lower pairs.

(a) True

(b) False

This question was addressed to me in semester exam.

This is a very interesting question from Kinematic Pair topic in chapter Simple Mechanisms of Machine Kinematics

Answer 1

Correct answer is (a) True

To elaborate: When the two elements of a pair have surface contact when relative motion, takes place and the surface of one element slides over the surface of the other, the pair formed is known as lower pair. It will be seen that sliding pairs, turning pairs and screw pairs form lower pairs.