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).
Today the 515 area code covers only about one-fourth of its original area, including Des Moines and areas northwest of there.The map to the right is clickable; click on any of the area codes on the map to go to the area code for that region.The metal band Slipknot named one of their songs 515 because the band is from Des Moines.he map to the right is clickable; click on any of the area codes on the map to go to the area code for that region. The metal band Slipknot named one of their songs 515 because the band is from Des Moines.