Theory of Machine
A point B on a rigid link AB moves with respect to A with angular velocity ω rad/s. The total acceleration of B with respect to A will be equal to

Vector difference of radial component and tangential component
Vector sum of radial component and Coriolis component
Vector sum of tangential component and Coriolis component
Vector sum of radial component and tangential component

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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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Theory of Machine
Oldham's coupling is the

Second inversion of single slider crank chain
Third inversion of slider crank chain
Third inversion of double slider crank chain
Second inversion of double slider crank chain

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