Theory of Machine
The inversion of a mechanism is

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

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Theory of Machine
In a cone pulley, if the sum of radii of the pulleys on the driving and driven shafts is constant, then

Crossed belt drive is recommended
The drive is recommended depending upon the torque transmitted
Both open belt drive and crossed belt drive is recommended
Open belt drive is recommended

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