Theory of Machine
In a turning moment diagram, the variations of energy above and below the mean resisting torque line is called

Fluctuation of energy
Coefficient of fluctuation of energy
Maximum fluctuation of energy
None of the listed here

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Theory of Machine
The frictional torque transmitted in a flat collar bearing, considering uniform pressure, is (where r₁ and r₂ = External and internal radii of collar respectively)

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

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