an electric motor under load at slow speed requires more amps at less voltage and vise versa for when its at a higher speed.
But I still maintain that torque is directly proportional to current. I though I would test our point of contention with real numbers so I went to myelectrical/tools/induction-motor-calculator.Making the assumption that at constant excitation voltage power = voltage * current. I know the current has a real and imaginary part, however I going to assume that we are talking about the real part.I ran the calculator through 4 different conditions (of power input) and recorded the resulting torque.This is way I found
So my contention remains that torque in an induction motor is directly proportional to current. Neither point suggested the absolute value of that proportionality.