Abstract :
MR. GRIFFITHS: I have always been under the impression that A.C.variable speed motors have a varying h.p. Low h.p. for low speed and high h.p. for top speed. I want to know, as I am of the opinion that there is a big future for variable speed motors with constant h.p., if this is possible, what is the relative size with ordinary A.C. motors of the same h.p.?
