initial commit / add all books

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diff --git a/1938/CH3/EX3.32/3_32.sce b/1938/CH3/EX3.32/3_32.sce
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+clc,clear

+printf('Example 3.32\n\n')

+

+I_1=56  //motor input current

+V=590   //voltage across armature

+I_2=44  // load current

+V_2=400 // voltage across generator

+V_field = 40  //voltage drop across field winding

+R_a=0.3, R_se=0.7142 //armature and series field resistane for each machine

+

+total_input=(V+V_field)*I_1

+output=V_2*I_2

+total_loss_g_m= total_input - output   //total losses of 2 machines

+R_se=V_field/I_1  //series field resistance for both windings

+total_cu_loss = (R_a+ 2*R_se)*I_1^2  + R_a*I_2^2  //total copper loss

+stray_loss= total_loss_g_m - total_cu_loss

+stray_loss_each = stray_loss/2  //stray loss for each machine

+

+// for motor

+motor_input = V*I_1

+arm_cu_loss_m =  (R_a+ R_se)*I_1^2  //armature coper losses of motor

+total_loss_m= arm_cu_loss_m + stray_loss_each

+motor_output = motor_input - total_loss_m

+eta_m = 100*(motor_output/motor_input)//motor efficiency 

+printf('Efficiency of motor is %.4f percent\n',eta_m)

+

+// for generator

+arm_cu_loss_g = R_a*I_2^2  //armature coper losses of generator

+series_field_cu_loss_g = V_field*I_1  //series field copper loss

+total_loss_g= arm_cu_loss_g + series_field_cu_loss_g + stray_loss_each

+generator_output=V_2*I_2

+generator_input = generator_output +  total_loss_g

+eta_g = 100*(generator_output/generator_input)//generator efficiency 

+printf('Efficiency of generator is %.4f percent\n',eta_g)