Maximum efficiency of a square threaded is given by

a) 1-sinǾ/1+sinǾ

b) 1+sinǾ/1-sinǾ

c) 1-2sinǾ/1+2sinǾ

d) 1+2sinǾ/1-2sinǾ

1 Answer

Answer :

a) 1-sinǾ/1+sinǾ

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