Theory of Machine
The centre of gravity of a coupler link in a four bar mechanism will experience

Both linear and angular acceleration
Only angular acceleration
Only linear acceleration
No acceleration

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Theory of Machine
Which of the following property of the instantaneous center is correct?

The two rigid links have no linear velocity relative to each other at the instantaneous centre.
All of these
A rigid link rotates instantaneously relative to another link at the instantaneous centre for the configuration of the mechanism considered.
The velocity of the instantaneous centre relative to any third rigid link is same whether the instantaneous centre is regarded as a point on the first rigid link or on the second rigid link.

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