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//CHAPTER 4- MEASURING INSTRUMENTS
//Example 9
clc;
disp("CHAPTER 4");
disp("EXAMPLE 9");
//VARIABLE INITIALIZATION
I=50; //in Amperes
v=230; //in Volts
rev=61; //revolutions
t=37/3600; //from seconds to hours
m_c=500; //meter constant in rev/kwh
pow_fact=1; //since load is purely resistive
//SOLUTION
E1=(v*I*t*pow_fact)/1000; //energy consumed in 37 seconds in kWh
E2=rev/m_c; //energy consumption registered by meter
err=(E2-E1)/E1;
err=err*100; //percentage error
disp(sprintf("The percentage error is %f %%",err));
if(err<0) then
disp("The negative sign indicates that the meter will run slow");
end
//END
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