Theory of Machine
The inversion of a mechanism is

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

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Theory of Machine
For dynamic balancing of a shaft

The net dynamic force acting on the shaft is equal to zero
None of these
The net couple due to the dynamic forces acting on the shaft is equal to zero
Both (A) and (B)

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