A screw is said to be over hauling screw, if the – McqOptions

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1.	A screw is said to be over hauling screw, if the
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» B. friction angle is more than helix angle

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