$6.$ What do tool angles specification systems help in defining? a$)$ Chip thickness ratio b$)$ Cutting tool wear c$)$ The orientation and geometry of cutting edges d$)$ Workpiece hardness$7.$ Which parameter is NOT considered a cutting parameter? a$)$ Cutting speed b$)$ Feed rate c$)$ Tool material d$)$ Depth of cut$8.$ Indexable inserts are advantageous because they: a$)$ Are disposable after a single use b$)$ Can be resharpened multiple times c$)$ Provide better surface finish than traditional tools d$)$ Have a longer tool life compared to solid tools$9.$ What is the purpose of chip breakers? a$)$ To minimize friction during cutting b$)$ To control the direction of chip flow c$)$ To reduce tool wear d$)$ To prevent chips from becoming entangled in the machine$10.$ Tools of unusual geometry are designed for: a$)$ General machining operations b$)$ Specific machining applications c$)$ High$-$speed cutting only d$)$ Low$-$precision machining tasks