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).
The 613 area originally covered all of Ontario with the exception of the Golden Horseshoe, which was in area code 416. The area code has been split twice. In 1953, the Southwestern Ontario portion of 613 was combined with the western portion of 416 to become 519.In 1957 the vast northwestern portion of 613 was combined with the northern portion of 519 to become area code 705.n 1953, the Southwestern Ontario portion of 613 was combined with the western portion of 416 to become 519. In 1957 the vast northwestern portion of 613 was combined with the northern portion of 519 to become area code 705.