12) Find out the speed setting (rpm) for a high speed steel drill D24 to cut a work piece of phosphor bronze. Maximum cutting speed with HSS for Phosphor Bronze is 35 m/min

13) What is the clearance angle if the angle of inclination of a chisel, with point angle 60 Degree, is 39.5 Degree?

14) Choose a drilling machine for drilling multiple holes of larger diameters

15) A Metric Outside micrometer of range 100-125 mm is used to measure the diameter of a rod. Barrel graduation showed 16.5 and the thimble graduation in line with the barrel datum line was 28. What is the diameter of the rod?

16) Carbon content in wrought iron is