Machine Design
The application of second type levers is found in

Hand wheel of a punching press
Lever of a loaded safety valve
A pair of tongs
Handle of a hand pump

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Machine Design
According to I.B.R., when the thickness of the boiler shell (t) is less than 8 mm, then the diameter of the rivet hole (d) is obtained by

Equating tearing resistance of the plate to the crushing resistance of the rivets
Equating tearing resistance of the plate to the shearing resistance of the rivets
Equating shearing resistance to the crushing resistance of the rivets
None of these

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