42) A Dia 6H7 hole is to be reamed in a steel workpiece. What size of drill will be required ?
Answer is:
5.8 mm
Related Cutting Tools MCQ - Machinist(Set-1) with Answers
Answer is:
Silicon carbide
Explanation:
In grinding wheel following abrasives are used
The natural abrasives are emery and corrundum,These are impure forms of aluminium oxide.
Artificial abrasives are silicon carbide and aluminium oxide.
Answer is:
Make surface flat so that bolt head can take proper seat on the surface
Explanation:
Spot facing is a machining operation for producing a flat seat for bolt head, washer or nut at the opening of a drilled hole. The tool is called a spot facer or a spot facing tool. Spot facing is similar to counter-boring, except that it is shallower. Tools that are used for counter-boring can be used for spot facing as well.
Answer is: