Theory of Machine
A system in dynamic balance implies that

There is no critical speed in the system
The system is also statically balanced
There will absolutely no wear of bearings
The system is critically damped

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Theory of Machine
In order to give a complete secondary balance of a multi-cylinder inline engine,

None of these
The algebraic sum of the couples about any point in the plane of the secondary forces must be equal to zero
The algebraic sum of the secondary forces must be equal to zero
Both (A) and (B)

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Theory of Machine
Power of a governor is the

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

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