2 files changed, 28 insertions, 0 deletions
diff --git a/431/CH4/EX4.12/EX4_12.sce b/431/CH4/EX4.12/EX4_12.sce
new file mode 100755
index 000000000..1425202d7
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+++ b/431/CH4/EX4.12/EX4_12.sce
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+//Calculate power developed and efficiency
+//Chapter 4
+//Example 4.12
+//page 308
+clear;
+clc; 
+disp("Example 4.12")
+S=0.03;                //slip
+SI=50;                //stator input in kilowatts
+SL=2;                //stator loss in kilowatts
+RI=SI-SL;            //rotor input in kilowatts
+RIL=S*RI;              //rotor I^2R loss
+//rotor core loss can be neglected at 3percent slip
+PDR=RI-RIL;            //power developed by the rotor
+printf("Power developed by the rotor=%fkW",PDR);
+FWL=1;                //friction and windage loss in kilowatt
+OP=PDR-FWL;            //output power
+printf("\nOutput power=%fkW",OP);
+effi=(OP*100)/SI;
+printf("\nEfficiency of the motor=%f percent",effi)
+
+
+
diff --git a/431/CH4/EX4.12/resultEX4_12.txt b/431/CH4/EX4.12/resultEX4_12.txt
new file mode 100755
index 000000000..fd47c291b
--- /dev/null
+++ b/431/CH4/EX4.12/resultEX4_12.txt
@@ -0,0 +1,5 @@
+  
+ Example 4.12   
+Power developed by the rotor=46.560000kW
+Output power=45.560000kW
+Efficiency of the motor=91.120000 percent 
+\ No newline at end of file