The cutting speed of the above turning operation is:

Question

Carbide tool is used to machine a 30 mm diameter steel shaft at a spindle speed of 1000 revolutions per minute. The cutting speed of the above turning operation is:

                                                     

(a) 1000 rpm                   (b) 1570 m/min

(c) 94.2 m/min                (d) 47.1 m/min