The cross-field theory of alternatingcurrent machines

P. L. Alg´er: Mr. West has presented in his paper a businesslike and accurate way of obtaining the characteristics of an a-c. motor. The method is particularly adapted, and, in fact, was especially intended, for use by engineers having to do with large numbers of motors. Probably we all agree that the circle diagram, or some similar graphical method, is most suitable for college instruction, and for use by persons only dealing with motors occasionally. When large quantities of motors are to be