The rotor core mounts on a steel shaft to form a rotor assembly. The wound rotor is another type of induction-motor-rotor construction. A major difference between the wound rotor motor and the squirrel-cage rotor is that the conductors of the wound rotor consist of wound coils instead of bars.
The 511 area code is NOT a valid area code. This area code is NOT officially assigned to a known Numbering Plan Area (NPA).
Area code 519 was put into service. Area code 519 was created from a split of area codes 416 and 613. In 1957 area code 519, along with area code 613, was split to form area code 705.