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diff --git a/2549/CH3/EX3.5.2/Ex3_5_2.sce b/2549/CH3/EX3.5.2/Ex3_5_2.sce
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+//Ex3.5.2
+//calculation of parameter for full wave rectifier ckt
+clc;
+clear;
+//given
+Rs=10;//resistance of transformer secondary winding
+Rf=5;//forward resistance of diode
+Rl=100;//load resistance
+N=1/2;//ratio of no. of turns secondary to primary winding (Ns/Np)
+V=240;//input ac voltage
+Vs_rms=N*V;//rms secondary voltage
+Vm=sqrt(2)*Vs_rms;//peak secondary voltage
+Il_dc=2*Vm/(%pi*(Rs+Rf+Rl));//avg load current
+Vnl=2*Vm/%pi;//avg load voltage at no load
+disp('****Part(1)');
+disp('mA',Il_dc*10^3,'Average load Current is :');
+disp('****Part(2)');
+disp('Volt',Vnl,'Average load Voltage at No Load is :');
+Vfl=Il_dc*Rl;//Average Load Voltage at Full load
+disp('****Part(3)');
+disp('Volt',Vfl,'Average load Voltage at Full Load is :');
+%LR=((Vnl-Vfl)/Vfl)*100;//load regulation
+disp('****Part(4)');
+disp('%',%LR,'% Load Regulation is :');
+n=(8/%pi^2)*(Rl/(Rs+Rf+Rl))*100;//rectification efficiency
+disp('****Part(5)');
+disp('%',n,'Rectification Efficiency is :')