The mechanism used in a shaping machine is
(a) A closed 4bar chain having 4 revolute pairs
(b) A closed 6bar chain having 6 revolute pairs
(c) A closed 4bar chain having 2 revolute and 2 sliding pairs
(d) An inversion of single slider crank chain
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My question comes from Inversion of Mechanism topic in section Simple Mechanisms of Machine Kinematics