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//CHAPTER 4- MEASURING INSTRUMENTS
//Example 5
disp("CHAPTER 4");
disp("EXAMPLE 5");
//VARIABLE INITIALIZATION
m_c=100; //meter constant in rev/kWh
I=20; //in Amperes
v=230; //in Volts
pow_fact=0.8;
rev_act=360; //actual revolution
//SOLUTION
E=(v*I*pow_fact)/1000; //from Wh to kWh
rev=m_c*E; //number of revolutions for true energy
disp(sprintf("The number of revolutions made by the meter is %f",rev));
err=(rev_act-rev)/rev;
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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