Machine Design
In order to avoid tearing of the plate at an edge, the distance from the centre line of the rivet hole to the nearest edge of the plate should be equal to (where d = Diameter of rivet hole)

2 d
1 d
1.5 d
2.5 d

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Machine Design
Slenderness ratio is the ratio of

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

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Machine Design
In case of thick cylinders, the tangential stress across the thickness of cylinder is

Maximum at the outer surface and zero at the inner surface
Maximum at the inner surface and zero at the outer surface
Maximum at the outer surface and minimum at the inner surface
Maximum at the inner surface and minimum at the outer surface

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