- 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 mobility of a planar mechanism to be one