Machine Design
All stresses produced in a belt are

Both tensile and compressive stresses
Shear stresses
Compressive stresses
Tensile stresses

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Machine Design
Which is correct statement?

Which one is rigid will depend on several other factors
A member made of steel will generally be more rigid than a member of equal load carrying ability made of cast iron
Both will be equally rigid
A member made of cast iron will generally be more rigid than a member of equal load carrying ability made of steel

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Machine Design
Coaxing is the procedure of increasing

Metal hardness by surface treatment
Metal strength by cycling
Metal resistance to corrosion by coating
Fatigue limit by over-stressing the metal by successively increasing loadings

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Machine Design
The contact ratio is the ratio of

Length of arc of contact to the circular pitch
Length of arc of approach to the circular pitch
Length of arc of recess to the circular pitch
Length of path of contact to the circular pitch

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