20.17 (USCS units) A rough turning operation is performed on a 20 hp lathe that has a 92% efficiency. The cut is made on alloy steel whose hardness is 325 HB.

Cutting speed = 375 ft/min, feed 0.030 in/rev, and depth of cut = 0.150 in. Based on these values, can the job be performed on the 20 hp lathe? Use Table 20.2 to obtain the unit horsepower value. =