Theory of Machine
In railway axle boxes, the bearing used is

Cylindrical roller bearing
Deep groove ball bearing
Double row self aligning ball bearing
Double row spherical roller bearing

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Theory of Machine
A point B on a rigid link AB moves with respect to A with angular velocity ω rad/s. The total acceleration of B with respect to A will be equal to

Vector sum of radial component and tangential component
Vector sum of tangential component and Coriolis component
Vector sum of radial component and Coriolis component
Vector difference of radial component and tangential component

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