If for a trapezoidal thread, angle of thread is 15‚Äö√Ñ√∂‚àö√ë‚àö¬• 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‚Äö√Ñ√∂�

1.	If for a trapezoidal thread, angle of thread is 15‚Äö√Ñ√∂‚àö√ë‚àö¬• 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‚Äö√Ñ√∂‚àö√ë‚àö¬• then what will be the replacement of the coefficient of friction which is 0.15.$

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