Machine Design
In the assembly of pulley, key and shaft

Pulley is made the weakest
Key is made the strongest
Key is made the weakest
All the three are designed for equal strength

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

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

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