Networks Analysis and Synthesis - Engineering

Q1:

If Va0, Va1, Va2 are sequence components of Va and Ia0, Ia1, Ia2 are sequence components of Ia, then total 3 phase power P is given by

A P = Va0Ia0 + Va1Ia1 + Va2Ia2

B P = Va0Ia0 + Va1Ia1 + Va2Ia2*

C P = 3(Va0Ia0 + Va1Ia1 + Va2Ia2)

D P = 3(Va0Ia0 + Va1Ia1 + Va2Ia2*)

ANS:D - P = 3(Va0Ia0 + Va1Ia1 + Va2Ia2*)

There are a total of 9 components (Three for each phase). Moreover, in general, P = VI*.