Metric thread of 0.8mm pitch is to be cut on a lathe; pitch of the lead screw is 1.5mm. If the spindle rotates at 1500 rpm, the speed of rotation of lead screw is
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Explanation:
(800) is correct
We have the formula,
Ns×Ps=Nt×Pt
Ns×1.5×1=1500×0.8×1
Ns=800rpm
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