Which of the following formula is correct for turning time

(Length of cut x No. of cuts)/(Feed x r.p.m)

(Feed x r.p.m)/(Length of cut x No. of cuts)

(Lengt of cut x Feed)/(No. of cuts x r.p.m)

(Length of cut x r.p.m)/(Feed x No. of cuts)

1815.20'

1815.30'

1815.40'

1815.50'

0.03, 0.07 mm

0.02, 0.03 mm

0.02, 0.02 mm

0.05, 0.05 mm

Interference and transition

Clearance and interference

Transition and clearance

Clearance and transition

(Driver/Driven) = (Pitch of lead screw/Pitch to be cut)

(Driver/Driven) = (Pitch to be cut/Pitch of lead screw)

(Driven/Driver) = (Pitch to be cut/Pitch of lead screw)

None of the above