Application – Motors, especially ones attached with fly wheel, de-energized upon pressing the stop button will still rotate due to inertial energy stored in the rotors. This motor condition is quite dangerous in some application. Many person loss their fingers after they stop motor thinking that there is no longer any effect to the machine which the motor drives. See figure below (A) and (B). Theory of Application Consider Figure below (A). Rotor R due to the rotating north and south poles at poles A, B, C and D. The Rotating north and south poles A, B, C, and D rotates because of AC voltage is remove from lines L1 and L2, the rotating poles at poles stops rotating because of inertia, the rotor R remains rotating. The rotor may rotate few seconds or even minutes depending upon the load it carries. (A) Rotor R will still rotate even if the AC voltage at lines L1 and L2 is removed. (B) Rotor R come to stop immediately if the AC voltage at lines L1 and L2 is substituted by a DC voltage....