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+//=====================================================================================
+//Chapter 12 example 1
+clc;clear all;
+
+//variable declaration
+Z1          =  100;			//resistance of arm  in  Ω
+Z2          =  50;			//resistance of arm  in  Ω
+Z3          =  200;			//resistance of arm  in  Ω
+Z4          =  100;			//resistance of arm  in  Ω
+theta1        = 30;			//phase angle in °
+theta2        = 0;			//phase angle in °
+theta3        = -90;			//phase angle in °
+theta4        = 30;         //phase angle in °
+
+//calculations
+x      = Z1*Z4;     //magnitude		
+y      = Z2*Z3;     //magnitude
+thetax    = theta1+theta4;
+thetay    = theta2+theta3;
+
+//result
+mprintf("x   = %3.2f",x)			
+mprintf("\nx   = %3.2f",y);	
+mprintf("\nsince x =y\n');
+mprintf("\nthe first condition is satisfied');
+mprintf("\nthetax = %3.2f",thetax);
+mprintf("\nthetay   = %3.2f",thetay);
+mprintf("\nsecond condition is not saatisfied');
+mprintf("\nIt means bridge is unbalancedthrough first condition for equality of magnitude product satisfied,obviously balance is not possible under above conditions");
+