//CHAPTER 8- DIRECT CURRENT MACHINES //Example 13 disp("CHAPTER 8"); disp("EXAMPLE 13"); //VARIABLE INITIALIZATION P=4; //number of poles v_t=220; //in Volts I_l=42; //load current in Amperes r_a=0.1; //in Ohms r_f=110; //in Ohms drop=1; //contact drop per brush //SOLUTION //solution (i) A=P; //for lap winding I_f=v_t/r_f; //I_f is same as I_sh I_a=I_l+I_f; I_c=I_a/A; //conductor current disp(sprintf("The current in each conductor of the armature is %d A",I_c)); //solution (ii) v_a=I_a*r_a; //armature voltage drop v_b=2*drop; //brush drop emf=v_t+v_a+v_b; disp(sprintf("The total emf generated is %f V",emf)); //END