1.

Which of the following statements is incorrect

A. Grashof’s rule states that for a planar crank-rocker four bar mechanism, the sum of the shortest and longest link lengths cannot be less than the sum of the remaining two link lengths.
B. Inversions of a mechanism are created by fixing different links one at a time.
C. Geneva mechanism is an intermittent motion device.
D. Gruebler’s criterion assumes mobality of a planar mechanism to be one.
Answer» B. Inversions of a mechanism are created by fixing different links one at a time.


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