Machine Design
Spring stiffness is

Load required to produce unit deflection
Its capability of storing energy
Its ability to absorb shocks
Ratio of coil diameter to wire diameter

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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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