Machine Design - Mechanical Engineering Questions and Answers

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Slenderness ratio is the ratio of

maximum size of column to minimum size of column

width of column to depth of column

effective length of column to least radius of gyration of the column

effective length of column to width of column

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A crankshaft is a __________ shaft.

transmission

machine

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According to Indian standard specifications, 100 H6/g5 means that the

actual size is 100 mm

basic size is 100 mm

difference between the actual size and basic size is 100 mm

none of the above

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A plate with an elliptical hole in the centre, with semi-major axis (a) perpendicular to the direction of loading and semi-minor axis (b) along the direction of loading, is subjected to a pull P. The maximum stress induced at the edge of the hole is equal to (where Ïƒ = Stress for a plate with no hole i.e. nominal stress)

\(\sigma(1 + \frac { b } { 2a })\)

\(\sigma(1 + \frac { 2a }{ b })\)

\(\sigma(1 + \frac { b } { 3a })\)

\(\sigma(1 + \frac { 3a }{ b } )\)