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+//Caption:Determine the (a)speed at full load (b)speed at double full load (c)stalling torque in terms of full load torque

+//Exa:2.30

+clc;

+clear;

+close;

+V=250;//in volts

+R_a=0.2;//in ohms

+N_1=800;//in rpm

+R_f=250;//in ohms

+I_f=V/R_f;//in amperes

+I=41;//in ampers

+I_a1=I-I_f;//in amperes

+E_1=V-(I_a1*R_a);//in volts

+E_2=V-(I_a1*(R_a+2));//in volts

+N_2=E_2*N_1/E_1;

+disp(N_2,'(a) Speed at full load (in rpm)=');

+I_a2=I_a1*2;//in amperes

+E_3=V-I_a2*(R_a+2);//in volts

+N_3=E_3*N_1/E_1;//in rpm

+disp(N_3,'(b) Speed at double full load (in rpm)=');

+I_ao=V/(R_a+2);

+r=I_ao/I_a1;

+disp(r,'(c) stalling torque is (times full load torque) =')
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