railway RRB JE (CBT I + CBT II) Mock Test 2024 Production Engineering (Manufacturing) Machining Processes and Machine Tools Tool Wear and Failure
A spindle speed of 300 rpm and a feed of 0.3 mm/revolution are chosen for longitudinal turning operation on an engine lathe. In finishing pass, roughness on the work surface can be reduced by
1
reducing the spindle speed
2
increasing the spindle speed
3
reducing the feed of tool
4
increasing the feed of tool