1. For the symmetrical 3-phase circuit in Figure 1: a) Draw 1-phase equivalent circuit b) Calculate phase current IR (in phasor form) c) Calculate 3-phase apparent power Sload of the load (not the whole circuit) in com- plex form Line-to-line voltage URS= 400V 30°, Rline=22, Lload = 15mH, Rload=102, f= 50Hz

Can someone please explain how to convert V1=-0.4220 to poloar phasor form? (V1=0.578<0)

Problem: Five linear components of complex impedances Z1, Z2, Z3, Z4 and Z5 are connected as it is shown in the circuit bellow. They are supplied by a sine wave voltage source U. Z1 Z4 Il Z3 13 Z2 Z5 If it is known that: Z1 Z3 Z4 Z5 II 13 Ω Ω Ω Ω A A 30 + j5 30 + j10 30 + j15 0+ j25 0.470 - jo.114 0.002 - j0.007 A) Find the average power that each component dissipates; B) Find the average power absorbed by the circuit; C) Verify the results.