Theory of Machine
In the below figure, PC is the connecting rod and OC is the crank making an angle θ with the line of stroke PO and rotates with uniform angular velocity at ω rad/s. The Klien's acceleration diagram for determining the acceleration of the piston P is shown by quadrilateral CQNO, the acceleration of the piston is _________ when the crank OC and connecting rod PC are at right angles to each other.

Any -ve value
Infinity
Zero
Any +ve value

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Theory of Machine
In elliptical trammels

One pair turning and three pairs sliding
All four pairs are turning
Three pairs turning and one pair sliding
Two pairs turning and two pairs sliding

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