Poly-phase circuits/-connected three phase system

Thread Starter


Joined Oct 18, 2005
I have a question about three phase ∆-connected system..but i couldnt solve it..i will be happy if u solve that for me i am not drawing the circuit because i think that u can imagine it very easily..the question is ;

A balanced three phase system has a ∆-connectd load with 12+9j Ω in each phase..and is supplied by a source with Vab=180 Vrms...the wire between the source and the load has impedance Z=0,1+0,2j

a)Find the magnitude of the line currents and load currrents
b)Find the magnitude of the voltage across each load
c)Find the total power delivered to the loads
d)Find the power factor
e)draw a phasor diagram to sgow the line and load currents