Chapter 3: Fractional K.W. (FKW) Motors

Example 3.1, Page 242

In [3]:
from math import pi, tan


#Given data :
Za=complex(3,3);#in ohm
Zm=complex(6,3);#in ohm

#Calculations
#Phase difference 90 degree : so angle between Im and  V is 90-45 degree
theta=90-45;#in degree
f=50;#in Hz
#Formula : tand(theta)=(Xc-Xl)/R
Xl=3;#in ohm and Xc=1/(2*%pi*C)
R=6;#in ohm
C=1./(2*pi*f*(tan(theta*pi/180)*R+Xl));

#Result
print "Capacitance(in micro Farad) :",(C*10**6);
Capacitance(in micro Farad) : 353.677651315