or stepper motor can produce and still maintain synchronous speed at designated voltage and frequency. Tested by progressively loading motor until motor falls out of synchrony. (Variable... a synchronous or stepper motor will accelerate to synchronous speed at designated voltage and frequency. Tested while under power, after loading motor to pull-out, reducing load until... motor returns to synchrony. Motor remains under power throughout the test. (Variable) Starting Torque - The maximum amount of torque against which a synchronous or stepper motor...