Theory of Machine
The following is the inversion of slider crank chain mechanism

All of these
Whitworth quick return mechanism
Hand pump
Oscillating cylinder engine

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Theory of Machine
A thin circular disc is rolling with a uniform linear speed, along a straight path on a plane surface. Which of the following statement is correct in this regard?

The centre of the disc has centrifugal acceleration
All points of the disc have the same velocity
The point on the disc making contact with the plane surface has zero acceleration
The centre of the disc has zero acceleration

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