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+//===========================================================================
+//chapter 8 example 11
+
+clc;clear all;
+
+ //variable declaration
+V   = 230;           //voltage in volts
+I   = 4;           //current in A
+I1   = 5;           //current in A
+cosphi   = 1;      //power factor 
+h        = 6;       //hours
+R        = 2208;    //revolutios made by meter
+R1        = 1472;    //revolutios made by meter 
+E1       = 400;      //energy consumption 
+h1        =4;
+
+//calculations
+E    = (V*I*cosphi*h)/(1000);     //energy consumption in kWh
+M     = R/(E);                   //meter constant in rev/kWh
+cosphi2    = (R1/(E1)*(1000/(V*I1*h1)));    //power factor of the load is cosphi2 for second measuremnet
+              
+//result
+mprintf("meter constant = %3.2f revolutions/kWhr",M);
+mprintf("\npower factor of the load is cosphi2 for second measuremnet = %3.2f",cosphi2);
+