Machine Design
In case of V belt drive

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

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Machine Design
The face of the tooth is the

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

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