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diff --git a/608/CH20/EX20.22/20_22.sce b/608/CH20/EX20.22/20_22.sce
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+//Problem 20.22: Determine the optimum value of load resistance for maximum power transfer if the load is connected to an amplifier of output resistance 150 ohm through a transformer with a turns ratio of 5:1..
+
+//initializing the variables:
+tr = 5; // turn ratio
+R1 = 150; // in Ohms
+
+//calculation:
+//The equivalent input resistance, R1 of the transformer needs to be 150 ohm for maximum power transfer.
+//R1 = RL*(tr^2)
+RL = R1/(tr^2)
+
+printf("\n\n Result \n\n")
+printf("\n the optimum value of load resistance is %.0f ohm", RL)
+\ No newline at end of file