Circular blanks of $$35$$ $$mm$$ diameter are punched from a steel sheet of $$2$$ $$mm$$ thickness. If the clearance per side between the punch and die is to be kept as $$40$$ microns, the sizes of punch and die should respectively be.

The maximum possible percentage reduction in area per pass during wire drawing of an ideal plastic material without friction is of the order of

Tolerance on the dimension $$'x'$$ in the two component assembly shown below is (all dimensions are in $$mm$$)

A tool with side cutting edge angle of $$30$$ degrees and end cutting edge angle $$10deg$$ is used for fine turning with a feed of $$1mm/rev$$. Neglecting nose radius of the tool, the maximum (peak to valley) height of the surface roughness produced will be