Machine Design
A fast and loose pulley drive is used when

Shafts are arranged parallel and rotate in the same directions
Shafts are arranged at right angles and rotate in one definite direction
Driven shaft is to be started or stopped whenever desired without interfering with the driving shaft
Shafts are arranged parallel and rotate in the opposite directions

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Machine Design
Tapered roller bearings can take

Both radial and axial loads and the ratio of these being less than unity
Both radial and axial loads and the ratio of these being greater than unity
Radial load only
Axial load only

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