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

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Theory of Machine
Power of a governor is the

Mean force exerted at the sleeve for maximum equilibrium speed
Work-done at the sleeve for maximum equilibrium speed
Mean force exerted at the sleeve for a given percentage change of speed
None of these

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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
Obtained by fixing different links in a kinematic chain
Turning its upside down

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