Theory of Machine
A watt's governor can work satisfactorily at speeds from

80 to 100 r.p.m.
60 to 80 r.p.m.
200 to 300 r.p.m.
100 to 200 r.p.m.

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

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

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