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//CHAPTER 8- DIRECT CURRENT MACHINES
//Example 38
disp("CHAPTER 8");
disp("EXAMPLE 38");
//VARIABLE INITIALIZATION
v_t=215; //in Volts
r_a=0.4; //in Ohms
p=5*1000; //in Watts
N_g=1000; //speed as generator in rpm
ratio=1.1; //according to the solution, Φ_b:Φ_a=1.1
//SOLUTION
//As generator
I_ag=p/v_t;
E_a=v_t+(I_ag*r_a);
//As motor
I_am=p/v_t;
E_b=v_t-(I_am*r_a);
N_m=(1/ratio)*N_g*(E_b/E_a);
N_m=round(N_m); //to round off the value
disp(sprintf("The speed of the machine as motor is %d rpm",N_m));
//END
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