Machine Design
In case of pressure vessels having open ends, the fluid pressure induces

Circumferential stress
Longitudinal stress
None of these
Shear stress

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Machine Design
Set screws are

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

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Machine Design
Turn buckle has

Left hand threads on one end and right hand threads on other end
Right hand threads on bout ends
Left hand threads on both ends
No threads

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