my plot for current vs speed of an energy efficient vs standard efficiency induction machine is not showing any values

disp('~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~')

disp('QUESTION 3): stator current vs. speed characteristicsfor EE and S induction motor:')

disp('~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~')

Zee = R1 + 1i*X1 + 1i*Xm*(R2./s+1i*X2)/(R2./s+1i*(X2+Xm)); % impeadance of the EE motor circuit

Zsm= sR1 + 1i*sX1 + 1i*sXm*(sR2./s+1i*sX2)/(sR2./s+1i*(sX2+sXm)); % impeadance of the S motor circuit

Iee = V1./Zee; % I1 for the EE motor

Ism = sV1./Zsm; %I1 for the S motor

%Plot the current vs speed characteristics of motors:

subplot(2,2,1),

plot(n,real(Iee)),xlabel('n [rpm]'),ylabel('Current [A]'),...

title('Current vs speed characteristic of EE and S induction motors'),grid on,...

hold on

%Plot the current vs speed characteristics of motor:

subplot(2,2,1),

plot(n,real(Ism)),xlabel('n [rpm]'),ylabel('Current [A]'),...

title('Current vs speed characteristic of EE and S induction motors'),grid on,...

hold on

[Ronald Walters]

s=0.0005:0.0005:1; %Slip [pu]

ns=120*f/p;

n=(1-s)*ns;

extra code i forgot to include

Answer 1

[VBBV]

clear
s=0.0005:0.0005:1; %Slip [pu]
f = 50; p = 4;
ns=120*f/p; 
n=(1-s)*ns;
R1=1.1;
X1 = 0.2;
Xm = 1e-3;
R2 = 3.4;
X2 = 1.01;
Zee = R1 + 1i*X1 + 1i*Xm*(R2./s+1i*X2)./(R2./s+1i*(X2+Xm));
sR1 = 0.8;
sR2 = 0.75;
sX1 = 3;
sX1 = 3
sX2 = 1.5;
sXm = 0.9e-2
Zsm= sR1 + 1i*sX1 + 1i*sXm*(sR2./s+1i*sX2)./(sR2./s+1i*(sX2+sXm));
V1 = 120;Iee = V1./Zee; % I1 for the EE motor 
sV1 = 240;
Ism = sV1./Zsm; %I1 for the S motor
subplot(211)
plot(n,real(Iee))
subplot(212)
plot(n,real(Ism))

Several unknowns in your question. I hope this works