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Machine Design

Machine Design
Rankine Gordon formula for buckling is valid for

Short and long column
Very long column
Long column
Short column

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Machine Design
The coefficient of friction in belt drive depends upon

Material of belt
Belt velocity
Material of pulley
Materials of belt and pulley

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Machine Design
When a beam of rectangular cross-section of width b and depth d, is subjected to a shear force F, the maximum shear stress induced will be

4F/bh
3F/2bh
F/bh
2F/bh

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Machine Design
The deflection of a cantilever beam under load W is 8. If its width is halved, then the deflection under load W will be

44045
44047
43869
43929

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Machine Design
The lead angle of a worm is 22.5°. Its helix angle will be

22.5°
90°
67.5°
45°

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Machine Design
For maximum power, the velocity of the belt will be

√(T/m)
√(T/2m)
None of these
√(T/3m)

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