The lengths of the links of a 4- bar linkage with revolute pairs only are p,q,r and s units. Given that p < q < r < s and s+p < q+r which of these links should be the fixed one, for obtaining a ‘double crank’ mechanism?

The lengths of the links of a 4- bar linkage with revolute pairs only

1.	The lengths of the links of a 4- bar linkage with revolute pairs only are p,q,r and s units. Given that p < q < r < s and s+p < q+r which of these links should be the fixed one, for obtaining a ‘double crank’ mechanism?
A.	ink of length p
B.	link of length q
C.	link of length r
D.	link of length s
Answer» B. link of length q

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