A milling operation is performed on a NC machining center. Total travel distance = 300 mm in a direction parallel to one of the axes of the worktable. Cutting speed = 1.25 m/s and chip load = 0.05 mm. The end milling cutter has four teeth and its diameter = 20.0 mm. The axis uses a dc servomotor whose output shaft is coupled to a lead screw with pitch = 6.0 mm. The feedback sensing device is an optical encoder which emits 250 pulses per revolution. Determine
(a) Feed rate and time to complete the cut,
(b) Rotational speed of the motor and
(c) Pulse rate of the encoder at the feed rate indicated.