In [1]:

```
#Variable declaration
conductors = 800.0 #Number of conductors
I_a = 1000.0 #Rated armature current(A)
P = 10.0 #Number of poles
pitch = 0.7 #Pole-face covers 70% of the pitch
a = P #Number of parallel paths for Simplex lap-wound
#Calculation
Z = conductors/P #Number of armature conductors/path under each pole
Z_a = Z*pitch #Active armature conductors/pole
Z_p = Z_a/a #Number of pole face conductors/pole
#Result
print('Number of pole face conductors/pole , Z_p = %.1f or %.f conductors/pole' %(Z_p,Z_p))
```

In [1]:

```
#Variable declaration
conductors = 800.0 #Number of conductors
I_a = 1000.0 #Rated armature current(A)
I_l = I_a #Load or total current entering the armature(A)
P = 10.0 #Number of poles
pitch = 0.7 #Pole-face covers 70% of the pitch
a = P #Number of parallel paths for Simplex lap-wound
alpha = 5.0 #Number of electrical degress that the brushes are shifted
#Calculation
Z = conductors/P #Number of armature conductors/path under each pole
A_Z_per_pole = (Z*I_l)/(P*a) #Cross magnetizing ampere-conductors/pole
At_per_pole = (1.0/2)*(8000/1) #Ampere-turns/pole
frac_demag_At_per_pole = (2*alpha)/180*(At_per_pole) #Fraction of demagnetizing ampere-turns/pole
beta = 180-2*alpha #Cross-magnetizing electrical degrees
cross_mag_At_per_pole = (beta/180)*(At_per_pole) #Cross-magnetizing ampere-turns/pole
#Result
print('(a) The cross-magnetizing ampere-conductors/pole = %.1f ampere-conductors/pole' %A_Z_per_pole)
print(' The cross-magnetizing ampere-turns/pole = %.1f At/pole' %At_per_pole)
print('(b) The fraction of demagnetizing ampere-turns/pole = %.1f At/pole' %frac_demag_At_per_pole)
print('(c) The cross-magnetizing ampere-turns/pole = %.f At/pole' %cross_mag_At_per_pole)
```