An arrangement of the circle diagram

IT is a well known fact that the Behrend-Heyland circle diagram for the “picturization” of the characteristics of the induction motor among all its advantages has a great draw-back, viz: its “space efficiency,” if I may say so, being very low. We all know that the most important part of the diagram is confined to a small fraction of the diagram sheet, and that precision and convenience are very much hampered by this fact.