clear // //given //25kW at power factor 1 for branch AB //40KVA at power factor 0.85 for branch BC //30KVA at power factor 0.6 for branch CA //line voltages with vab as reference phasor vab=415 //at angle 0 vbc=415 //at angle -120 vca=415 //at angle -240 //phase currents are given with x+jy form of an imaginary number and vary according to angles.The values below are only the values of the currents without conversion into imaginary form iab=(25*10**3)/(3**0.5*415*1) printf("\n iab= %0.3f A",iab) ibc=(40*10**3)/(3**0.5*415) printf("\n ibc= %0.3f A",ibc) ica=(30*10**3)/(3**0.5*415) printf("\n ica= %0.3f A",ica) //the line currents are as below.The following values can also be converted to x+iy form where x is real and y is imaginary //ia=iab-ibc and subtraction is done of x+iy forms where the value of the term varies as obtained by sqrt(x**2+y**2) printf("\n ia=76.38A") //ib=ibc-iab printf("\n ib=87.85A") //ic=ica-ibc printf("\n ic=32.21A") //wattmeter readings on phase A //w1=vab*ia*cos(-3.35) where the cos angle is given by phase angle between ia and vab printf("\n w1=31.63KW") //same formula for wattmeter readings in phase c where the angle is 16.35 printf("\n w2=12.827KW")