Question:-
Dry and compressed air is used as cutting fluid for machining
Option (A)
steel
Option (B)
aluminium
Option(C)
cast iron
Option(D)
brass
Correct Option:
(C)
Question Solution:
Apart from cast iron, all (steel, aluminium, brass) react with dry and compressed air produced oxides. The chip produced are discontinuous (small chips) so compressed air is used.
question-answer-faq-8424