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).
Other countries may have domestic area codes like 0151. 0151 is not a telephone country code, because country codes cannot begin with zero. Country code +1 is North America (USA, Canada, etc.), but you need the three-digit area code to be more specific.151 is not a telephone country code, because country codes cannot begin with zero. Country code +1 is North America (USA, Canada, etc.), but you need the three-digit area code to be more specific.