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
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

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Machine Design
The face of the tooth is the

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

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Machine Design
Spring stiffness is

Its ability to absorb shocks
Ratio of coil diameter to wire diameter
Its capability of storing energy
Load required to produce unit deflection

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