engineering recuitment BARC Stipendiary Trainee Category I 2023 Mock Test Production Engineering (Manufacturing) Machining Processes and Machine Tools Different Machining Processes
The time taken to drill a hole of diameter 25 mm in a 30 mm thick steel plate with a feed of 1 mm/rev and the drill spindle speed being 60 rpm is _________ seconds.
1
20
2
30
3
40
4
50