Applying DC to an induction motor will produce a non rotating motor field and bring the motor to a stop very quickly,, so quickly at full voltage that on a table saw it will frequently loosen the blade nut. The duration of the DC applied needs to be limited in voltage and duration, or you can damage the motor windings. I have designed several of these DC motor brakes over my career, saving considerable redesign costs on some new automated machinery.
Charley