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+//Caption: Find Current per phase in the rotor (a)when rotor is at standstill and star connected impedance of 4.1+%i2 per phase is connected in series with rotor (b)when rotor runs at 3% slip with short circuit at the slip rings
+//Exa:11.7
+clc;
+clear;
+close;
+V=69.28//Induced e.m.f(in volts)
+r=0.9//Resistance of rotor per phase(in ohm)
+x=6//Standstill rectance of rotor per phase(in ohm)
+z=4.1+(%i*2)
+s=3//Slip(in%)
+V_r=V/sqrt(3)
+R_r=r+real(z)
+X_r=(%i*2)+(%i*x)
+Z=R_r+X_r
+I_r=V_r/Z
+disp(I_r,'(a)Current when rotor is at standstill=')
+E=(s/100)*V_r
+Imp=r+(%i*(s/100)*x)
+i_r=E/Imp
+disp(i_r,'(b)Current when rotor runs at 3% slip=') \ No newline at end of file