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

μ W R cosecα
(2/3) μ W R cosecα
(3/4) μ W R cosecα
(1/2) μ W R cosecα

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Theory of Machine
Which of the following property of the instantaneous center is correct?

A rigid link rotates instantaneously relative to another link at the instantaneous centre for the configuration of the mechanism considered.
The velocity of the instantaneous centre relative to any third rigid link is same whether the instantaneous centre is regarded as a point on the first rigid link or on the second rigid link.
The two rigid links have no linear velocity relative to each other at the instantaneous centre.
All of these

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Theory of Machine
When the belt is stationary, it is subjected to some tension known as initial tension. The value of this tension is equal to the

Tension in the slack side of the belt
Tension in the tight side of the belt
Average tension of the tight side and slack side of the belt
Sum of the tensions on the tight side and slack side of the belt

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

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

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