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Machine Design

Machine Design
The suitable material for belt used in flour mill is

Rubber
Leather
Canvas or cotton duck
Balata gum

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Machine Design
The shear modulus of resilience is proportional to

(Shear stress)²
(Shear stress)3
(Shear stress)⁴
Shear stress

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Machine Design
The usual proportion for the width of key is (where d = Diameter of shaft or diameter of hole in the hub)

d/4
d/6
d/8
d/2

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Machine Design
If a material fails below its yield point, failure would be due to

Creep
Sudden loading
Straining
Fatigue

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Machine Design
The resultant axial load on a bolt depends upon

Relative elastic yielding of the bolt and the connected members
Initial tension due to tightening of the bolt
External load applied
All of these

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Machine Design
In worm gears, the angle between the tangent to the pitch helix and an element of the cylinder, is known as

None of these
Pitch lead angle
Pressure angle
Helix angle

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