A screw will be self locking, if Options: A . &nbspfriction angle is less than helix angle B . &nbspfriction angle is more than helix angle C . &nbspfriction angle is equal to helix angle D . &nbspefficiency of screw is 100%

Question

A screw will be self locking, if

Options:

A . friction angle is less than helix angle

B . friction angle is more than helix angle

C . friction angle is equal to helix angle

D . efficiency of screw is 100%

Answer: Option B

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