Suppose that a ring oscillator contains 301 inverters and the average propogation delay of an inverter is 100 ps. what will be the period of the square wave generated by the oscillator? (b) what is the frequency of oscillator? (c) why should the number of inverters be odd? what could happen if an even number of inverters were used in the ring oscillator?

Aturning operation is performed with following conditions: rake angle of 12°, a feed of 0.35 mm/rev, and a depth of cut of 1.1 mm. the work piece is aluminum alloy 6061 with t6 heat treatment (a16061-t6). the resultant chip thickness was measured to be 1.0 mm. estimate the cutting force, fc. use shear stress of 207 mpa and coefficient of friction on the tool face of 0.6.