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It is planned to construct a four-bar mechanism ABCD with length AB= 60mm, BC = 100mm, CD = 70 mm and fixed link AD = 200 mm. If at least one link is required to have a complete rotation, this mechanism is

It is planned to construct a four-bar mechanism ABCD with length AB= 60mm, BC = 100mm, CD = 70 mm and fixed link AD = 200 mm. If at least one link is required to have a complete rotation, this mechanism is Correct Answer of double rocker type

S + L = 60 + 200 = 260 mm P + Q = 100 + 70 = 170 mm From grashoff equality when S + L > P + Q So always double rocker.

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