Calculation of the starting torque of single-phase induction motors with phase-splitting starting devices

The starting torque of any induction motor is proportional to the product of the main field by the quadrature field, hence to the product of the main electromotive force by the quadrature electromotive force. The starting torque of a single-phase induction motor with a phase-splitting starting device can, therefore, be predetermined if the electromotive forces at the terminal are known.