Machine Design
In nitrated parts, the origins of the fatigue cracks will occur at

Surface
None of these
Just below the surface
Within the core

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Machine Design
In case of V belt drive

The belt should not touch the sides of groove in the pulley
The belt should touch the bottom of groove in the pulley
The belt should not touch the bottom of groove in the pulley
None of these

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Machine Design
A bolt

Has a head on one end and a nut fitted to the other
Is provided with pointed threads
Has both the ends threaded
Has head at one end and other end fits into a tapped hole in the other part to be joined

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