Theory of Machine
In a steam engine, the earlier cut-off with a simple slide valve may be obtained by increasing the steam lap and the angle of advance of the eccentric but keeping constant the travel and lead of the valve, this method will

All of the listed here
Reduce length of effective stroke of piston
Reduce maximum opening of port to steam
Cause withdrawing or throttling of steam

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Theory of Machine
For an isochronous Hartnell governor (where r₁ and r₂ = Maximum and minimum radius of rotation of balls respectively, S₁ and S₂ = Maximum and minimum force exerted on the sleeve respectively, and M = Mass on the sleeve)

S₂/S₁ = r₁/r₂
(m.g - S₁)/(m.g - S₂) = r₂/r₁
S₁/S₂ = r₁/r₂
(m.g + S₁)/(m.g + S₂) = r₁/r₂

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Theory of Machine
A body in motion will be subjected to Coriolis acceleration when that body is

In plane motion which is a resultant of plane translation and rotation
Restrained to rotate while sliding over another body
In plane rotation with variable velocity
In plane translation with variable velocity

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