Abstract :
S. B. Crary (General Electric Company, Schenectady, N. Y.): As stated by the authors the derivation of the equations for electrical torque were simplified by making certain assumptions in order to avoid “cumbersome” expressions. As these assumptions necessarily limit somewhat the generality of the results, it may be in order to indicate a more complete solution for the case of simultaneous application of the three-phase voltages but which still can be written in compact form.