222) Internal or external of different pitches can be produced by

223) Which of the following operations is carried out at a minimum cutting velocity if the machines are equally rigid and the tool work materials are the same?

224) The cutting tool in a milling machine is mounted on

225) In a plain milling cutter, the chip space between the back of one tooth and the face of the next tooth is called

226) In a plain milling cutter, the portion of the gash adjacent to the cutting edge on which the chip impinges is called