In a DC Motor, if we change the position of the Brushes like this;
In a configuration like this, one of the armature windings will get excited earlier, so it will experience the force earlier.
>> Hence, the speed will increase exponentially.
>> https://youtu.be/nxlvPXPzVxk (Demonstration)
Note, Due to the high speed rotation, the arcing increases so the carbon brush gets so hot, that they might break.
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