Theory of Machine
A spring controlled governor is said to be isochronous when the controlling force

Increases as the radius of rotation increases
Increases as the radius of rotation decreases
Decreases as the radius of rotation increases
Remain constant for all radii of rotation

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Theory of Machine
The frictional torque transmitted in a truncated conical pivot bearing, considering uniform pressure, is

(1/2). μ W cosecα [(r₁³ - r₂³)/(r₁² - r₂²)]
(1/2). μ W cosecα (r₁ + r₂)
(2/3). μ W cosecα [(r₁³ - r₂³)/(r₁² - r₂²)]
(2/3). μ W cosecα (r₁ + r₂)

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