Machine Design
Which of the following statement is correct, for two shafts connected in parallel?

Torsional stiffness of each shaft is the same
Shear stress in each shaft is the same
Angle of twist of each shaft is the same
Torque in each shaft is the same

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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

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

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