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Machine Design

Machine Design
Rankine Gordon formula for buckling is valid for

Short and long column
Short column
Very long column
Long column

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Machine Design
A rivet is specified by

Length of tail
Length of rivet
Type of head
Shank diameter

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Machine Design
When two non-parallel or intersecting but coplanar shafts are connected by gears, the arrangement is known as,

Helical gearing
Bevel gearing
None of these
Worm gearing

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Machine Design
The groove angle of the pulley for rope drive is usually

35°
45°
60°
20°

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Machine Design
The rated life of a bearing varies

Inversely as cube of load
Directly as load
Inversely as fourth power of load
Inversely as square of load

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Machine Design
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 σ = Stress for a plate with no hole i.e. nominal stress)

σ [1 + (b/3a)]
σ [1 + (3a/b)]
σ [1 + (b/2a)]
σ [1 + (2a/b)]

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