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Which of the following mechanisms has the form of trapezium in its mean position?

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+1 vote
in Machine Kinematics by (38.0k points)
Which of the following mechanisms has the form of trapezium in its mean position?

(a) Scott Russell’s mechanism

(b) Watt’s mechanism

(c) Grasshopper mechanism

(d) Robert’s mechanism

I had been asked this question in class test.

My question comes from Exact Straight Line Motion Consisting of One Sliding Pair topic in chapter Mechanisms with Lower Pairs of Machine Kinematics

1 Answer

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by (106k points)
The correct answer is (d) Robert’s mechanism

To explain: Robert’s mechanism is a four bar chain mechanism, which, in its mean position, has the form of a trapezium.

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