Machine Design
Slenderness ratio is the ratio of

Effective length of column to least radius of gyration of the column
Effective length of column to width of column
Width of column to depth of column
Maximum size of column to minimum size of column

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Machine Design
A compound belt drive is used when

Shafts are arranged parallel and rotate in the same directions
None of these
Shafts are arranged parallel and rotate in the opposite directions
Shafts are arranged at right angles and rotate in one definite direction

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