Commercial available medium size machines have a speed range of __________ ? A. 200 to 400 r.p.m B. 600 to 1000 r.p.m C. 1000 to 1500 r.p.m D. 2000 to 2500 r.p.m Answer: D . 2000 to 2500 r.p.m 0Shares0 0