Machine Design
The objective of caulking in a riveted joint is to make the joint

Free from corrosion
Stronger in tension
Leak-proof
Free from stress

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Machine Design
Crowning on pulley helps

To keep the belt in centre on a pulley while it is in motion
To increase pulley life
In increasing the slip of the belt
In decreasing the slip of the belt

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Machine Design
In case of V belt drive

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

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