A screw will be self locking, if%! – McqOptions

MCQOPTIONS

1.	A screw will be self locking, if%!
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» C. Friction angle is equal to helix angle

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