19) When the two elements of a pair have a 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 a
Answer is:
lower pair
Related Theory of Machines MCQ with Answers
Answer is:
kinematic pair
Explanation:
The two links or elements of a machine, when in contact with each other, are said to form a pair. If the relative motion between them is completely or successfully constrained (i.e. in a definite direction), the pair is known as kinematic pair.
Answer is:
Wrong
Answer is:
decreases exponentially with time
Answer is:
is in motion
Explanation:
The friction, experienced by a body, when in motion, is known as dynamic friction or kinetic friction. Dynamic friction is always less than static friction. The dynamic friction is of three types, i.e. sliding friction, rolling friction and pivot friction.