engineering recuitment Vizag Steel MT Mechanical 2020 Test Series Production Engineering (Manufacturing) Machining Processes and Machine Tools
Time taken to drill a hole through 50 mm thick plate with a drill rotating at 300 rpm with a feed rate of 0.25 mm/rev.
(Neglect approach & Overrun)
1
30 sec
2
40 sec
3
20 sec
4
60 sec