Theory of Machine
The type of coupling used to join two shafts whose axes are neither in same straight line nor parallel, but intersect is

Chain coupling
Oldham's coupling
Flexible coupling
Universal coupling

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

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

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