Abridgment of the modern single-phase motor for railroad electrification

The past three years have seen a great increase of activity in the field of a-c. electrification of steam railroads, and consequently much attention has been given to the design of the single-phase traction motors upon which the success of this type of electrification chiefly depends. The object of this paper is to describe the up-to-date motors which have been developed to meet the requirements of modern American railroading.