275) In ultra-sonic machining, tool is made of
Answer is:
brass or copper
Related Production Engineering MCQ with Answers
Answer is:
all of these
Explanation:
Ultra-sonic machining is best suited for
* tool steels
* sintered carbides
* glass
Answer is:
it removes large amount of material
Answer is:
all of these
Explanation:
In electro-discharge machining, dielectric is used to
* help in the movement of the sparks
* control the spark discharges
* act as coolant