If for a trapezoidal thread, angle of thread is 15’ then what will be the replacement of the coefficient of friction which is 0.15.

If for a trapezoidal thread, angle of thread is 15’ then what will

1.	If for a trapezoidal thread, angle of thread is 15’ then what will be the replacement of the coefficient of friction which is 0.15.
A.	0.1553
B.	0.1335
C.	0.1667
D.	0.1776
Answer» B. 0.1335

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If for a trapezoidal thread, angle of thread is 15’ then what will be the replacement of the coefficient of friction which is 0.15.

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