79) What is the purpose of aluminium oxide abrasive in high speed sander machine?
Answer is:
Hard wood finishing
Related Wood Working Machine - 1.Sawing MCQ with Answers
Answer is:
Job rotating smoothly
Explanation:
Revolving Centres are Frictionless. Used for supporting heavy jobs and jobs revolving with high speeds. A high-speed steel inserted centre is supported by two bearings housed in a body. It is also called the revolving dead centre.
