3 files changed, 57 insertions, 0 deletions
diff --git a/695/CH2/EX2.15/Ex2_15.sce b/695/CH2/EX2.15/Ex2_15.sce
new file mode 100755
index 000000000..a5090d61f
--- /dev/null
+++ b/695/CH2/EX2.15/Ex2_15.sce
@@ -0,0 +1,23 @@
+//Caption:Find the (a)Cu-loss (b)iron and friction loss (c) torque
+//Exa:2.15
+clc;
+clear;
+close;
+P_o=25000;//output power in watts
+V_t=250;//in volts
+R_se=0.05;//series resistance in ohms
+R_a=0.04;//armature winding resistance in ohms
+R_f=50;//shunt feild winding resistance in ohms
+Eff=0.89;//efficiency
+N=1000;//speed in rpm
+I=P_o/V_t;//in amperes
+I_f=V_t/R_f;//in amperes
+I_a=I+I_f;
+P_cu=R_a*I_a^2+R_se*I_a^2+R_f*I_f^2;//copper loss in watts
+disp(P_cu,'(a) Cu-loss (in watts)=');
+P_i=P_o/Eff;//input power in watts
+P_L=P_i-P_o;//total losses in watts
+P_fric=P_L-P_cu;
+disp(P_fric,'(b) Iron and friction loss (in watts)=');
+T=P_i*60/(2*%pi*N);
+disp(T,'(c) Torque (in N-m)=')
+\ No newline at end of file
diff --git a/695/CH2/EX2.15/Ex2_15.txt b/695/CH2/EX2.15/Ex2_15.txt
new file mode 100755
index 000000000..a5090d61f
--- /dev/null
+++ b/695/CH2/EX2.15/Ex2_15.txt
@@ -0,0 +1,23 @@
+//Caption:Find the (a)Cu-loss (b)iron and friction loss (c) torque
+//Exa:2.15
+clc;
+clear;
+close;
+P_o=25000;//output power in watts
+V_t=250;//in volts
+R_se=0.05;//series resistance in ohms
+R_a=0.04;//armature winding resistance in ohms
+R_f=50;//shunt feild winding resistance in ohms
+Eff=0.89;//efficiency
+N=1000;//speed in rpm
+I=P_o/V_t;//in amperes
+I_f=V_t/R_f;//in amperes
+I_a=I+I_f;
+P_cu=R_a*I_a^2+R_se*I_a^2+R_f*I_f^2;//copper loss in watts
+disp(P_cu,'(a) Cu-loss (in watts)=');
+P_i=P_o/Eff;//input power in watts
+P_L=P_i-P_o;//total losses in watts
+P_fric=P_L-P_cu;
+disp(P_fric,'(b) Iron and friction loss (in watts)=');
+T=P_i*60/(2*%pi*N);
+disp(T,'(c) Torque (in N-m)=')
+\ No newline at end of file
diff --git a/695/CH2/EX2.15/R2_15.txt b/695/CH2/EX2.15/R2_15.txt
new file mode 100755
index 000000000..143f70b2e
--- /dev/null
+++ b/695/CH2/EX2.15/R2_15.txt
@@ -0,0 +1,11 @@
+ (a) Cu-loss (in watts)=   
+ 
+    2242.25  
+ 
+ (b) Iron and friction loss (in watts)=   
+ 
+    847.63764  
+ 
+ (c) Torque (in N-m)=   
+ 
+    268.23867 
+\ No newline at end of file