Machine Design
The resilience of a bolt may be increased by

Increasing its shank diameter
Increasing its length
Decreasing its length
Decreasing its shank diameter

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Machine Design
Machine screws are

Slotted for a screw driver and generally used with a nut
Used to prevent relative motion between two parts
Similar to small size tap bolts except that a greater variety of shapes of heads are available
Similar to stud

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Machine Design
The elasticity is the property of a material which enables it to

Draw into wires by the application of a tensile force
Retain deformation produced under load permanently
Regains its original shape after deformation when the external forces are removed
Resists fracture due to high impact loads

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

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