It is required to cut screw threads of 2 mm pitch on a lathe. The lead screw has a pitch of 6 mm.If the spindle speed is 60 rpm, then the speed of the lead screw will be:

It is required to cut screw threads of 2 mm pitch on a lathe. The lead

1.	It is required to cut screw threads of 2 mm pitch on a lathe. The lead screw has a pitch of 6 mm.If the spindle speed is 60 rpm, then the speed of the lead screw will be:
A.	10 rpm
B.	20 rpm
C.	120 rmp
D.	180 rpm
Answer» C. 120 rmp

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It is required to cut screw threads of 2 mm pitch on a lathe. The lead screw has a pitch of 6 mm.If the spindle speed is 60 rpm, then the speed of the lead screw will be:

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