Theory of Machine
In order to balance the reciprocating masses,

Primary forces and couples must be balanced
Secondary forces and couples must be balanced
None of these
Both (A) and (B)

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Theory of Machine
A governor is said to be stable, if the

Radius of rotation of balls increases as the equilibrium speed increases
Radius of rotation of balls increases as the equilibrium speed decreases
Radius of rotation of balls decreases as the equilibrium speed decreases
Radius of rotation of balls decreases as the equilibrium speed increases

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Theory of Machine
The inversion of a mechanism is

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

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