A kinematic pair consists of
Pair of elements having line or point contact
Pair of elements having surface contact
Two elements that permit relative motion
Two elements which are mechanically held together
Two elements that permit relative motion
A kinematic pair or simply a pair is a joint of two links having relative motion between them.
Example :In a slider-crank mechanism crank and connecting rod constitute turning pairs which is a kinematic pair.
&Key Points:-
●The connection between two links is always known as a pair or joint, but it will be kinematic pair, if motion between link is constrained (completely or successfully).
●A kinematic pair consists of both, pair of elements having line or point contact and surface contact.
●In kinematic pair, elements are mechanically held together (closed pair), but also can be by external force (open pair).
Hence, the correct option is (C).
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