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

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

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Theory of Machine
The steering of a ship means

Turning of a complete ship in a curve towards right or left, while it moves forward
Movement of a complete ship up and down in vertical plane about transverse axis
Rolling of a complete ship sideways
None of these

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