Question #12384
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What is the formula for finding gear ratio for fractional pitch thread?

A.
DR/DN = Leads of screw to be cut X No. Of threads per inch of lead screw
B.
DR/DN = TPI on lead screw/ TPI to cut
C.
DR/DN = Lead of head screw/ Lead of work
D.
DR/DN = Lead of work/ No. Of threads per inch
Explanation

No explanation provided.