Theory of Machine
The mechanism in which two are turning pairs and two are sliding pairs, is called a

Double slider crank chain
All of these
Elliptical trammel
Scotch yoke mechanism

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Theory of Machine
The inversion of a mechanism is

Obtained by reversing the input and output motion
Changing of a higher pair to a lower pair
Turning its upside down
Obtained by fixing different links in a kinematic chain

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