Q2. (a) Figure Q2 shows an unbalanced three-phase circuit. Determine the line currents and complex power absorbed by each load for the following unbalanced three-phase circuit by using mesh analysis. Let V1 = 120 20°, V2 = 120 <-120°, V3 = 120 z- 240°. 21 75+j60 0 120V 60HZ V2 22 15+j45 0 120V 60HZ -120 V3 23 3 53157 a 120V 60HZ -240 Figure Q2

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Please answer a and b

Q2. (a) Figure Q2 shows an unbalanced three-phase circuit. Determine the line currents and
complex power absorbed by each load for the following unbalanced three-phase
circuit by using mesh analysis. Let Vi = 120 20°, V2 = 120 2-120°, V3 = 120 2-
240°.
21
75+j60 0
120V
60HZ
V2
22
15+j45 0
120V
60HZ
-120
V3
23
3
53157 a
120V
60HZ
-240
Figure Q2
(b)
If all impedances in Figure Q2 are 15+j45 N. Calculate the neutral line current.
Transcribed Image Text:Q2. (a) Figure Q2 shows an unbalanced three-phase circuit. Determine the line currents and complex power absorbed by each load for the following unbalanced three-phase circuit by using mesh analysis. Let Vi = 120 20°, V2 = 120 2-120°, V3 = 120 2- 240°. 21 75+j60 0 120V 60HZ V2 22 15+j45 0 120V 60HZ -120 V3 23 3 53157 a 120V 60HZ -240 Figure Q2 (b) If all impedances in Figure Q2 are 15+j45 N. Calculate the neutral line current.
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