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diff --git a/431/CH3/EX3.22/EX3_22.sce b/431/CH3/EX3.22/EX3_22.sce
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+++ b/431/CH3/EX3.22/EX3_22.sce
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+//Calculate efficiency //Chapter 3
+//Example 3.22
+//page 231
+clear;
+clc;
+disp("Example 3.22")
+kVA=200;                //Rating of the transformer
+Pin=3.4;                //power input to two transformer in watt
+Pin2=5.2;
+coreloss=Pin;           //core loss of two transformers
+phi=acosd(0.8);
+printf("\nCore loss of two transformer=%fkW",Pin)
+printf("\nCore loss of each transformer=%fkW",(Pin/2))
+printf("\nFull load copper loss of the two transformer=%fkW",Pin2)
+printf("Therefore,full load copper loss of each transformer=%fkW",(Pin2/2));
+effi=(kVA*cosd(phi)*100)/((kVA*cosd(phi))+(Pin/2)+(Pin2/2))
+printf("\nFull load efficiency at 0.8 p.f. lagging=%fpercent",effi);
+\ No newline at end of file
diff --git a/431/CH3/EX3.22/resultEX3_22.txt b/431/CH3/EX3.22/resultEX3_22.txt
new file mode 100755
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+++ b/431/CH3/EX3.22/resultEX3_22.txt
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+  
+ Example 3.22   
+
+Core loss of two transformer=3.400000kW
+Core loss of each transformer=1.700000kW
+Full load copper loss of the two transformer=5.200000kWTherefore,full load copper loss of each transformer=2.600000kW
+Full load efficiency at 0.8 p.f. lagging=97.382836percent
+\ No newline at end of file