engineering recuitment DRDO Technician A 2022 Mock Test Series (Tier I) Production Engineering (Manufacturing) Machining Processes and Machine Tools Different Machining Processes
Consider the following:
The purpose of lapping process is
1) to produce geometrically true surface imperfection
2) to correct minor surface imperfections
3) To improve dimensional accuracy
4) to provide very close fit between the contact surfaces
Which of the above are correct?1
1, 2 and 3 only
2
1, 3 and 4 only
3
2, 3 and 4 only
4
1, 2, 3, and 4