Machine Design
Which is correct statement?

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

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Machine Design
The flank of the tooth is the

Width of the tooth measured along the pitch circle
Surface of the tooth below the pitch surface
Surface of the top of the tooth
Surface of the tooth above the pitch surface

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Machine Design
For unequal width of butt straps, the thicknesses of butt straps are

0.625 t for both the straps on the inside and outside
0.75 t for narrow strap on the inside and 0.625 t for wide strap on the outside
0.75 t for both the straps on the inside and outside
0.75 t for wide strap on the inside and 0.625 t for narrow strap on the outside

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