Theory of Machine
Oldham’s coupling is an inversion of the kinematic chain used in

Elliptical trammels
Whitworth quick return mechanism
Rotary engine
Universal joint

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

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