Abstract :
This paper opens a discussion on general methods of calculating dynamo-electric machines and gives an outline of a method which is applicable to all types of such machines, whether alternating-current or continuous-current generators or motors, or rotary converters. Simple rules are given for determining the various quantities upon which the performance of a machine depends; in particular, the method of arriving at a temperature rise which may be expected is more completely developed than in a previous paper by H.D. Symons and the author.
