Smooth cylindrical
Salient pole
Projected pole
Squirrel cage rotor
Totally closed
Wide open
Semi closed
Semi open
U, V, W and N
A, B, C and N
1, 2, 3 and 4
X, Y, Z, N
120 Degree
90 Degree
360 Degree
180 Degree
Projecting pole
Squirrel cage