Machine Design
When a metal or alloy is cold worked,

Both (A) and (B)
None of these
It is worked below recrystallization temperature
Its hardness and strength increases

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Machine Design
A bolt of uniform strength can be developed by

Keeping the nominal diameter of threads equal to the diameter of unthreaded portion of the bolt
None of these
Keeping the core diameter of threads equal to the diameter of unthreaded portion of the bolt
Keeping the core diameter smaller than the diameter of the unthreaded portion

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Machine Design
Turn buckle has

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

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