A single-phase power system consists of a 480-V 60-Hz generator supplying a load ZLoad = 4 + j3 2 through a transmission line of impedance ZLine = 0.18 + j0.24 2. 1. If the power system is exactly as described above (see Figure a), what will the voltage at the load be? What will the transmission line losses be? 2. Suppose a 1: 10 step-up transformer is placed at the generator end of the transmission line and a 10: 1 step-down transformer is placed at the load end of the line (see Figure b). What will the load voltage be now? What will the transmission line losses be now?

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A single-phase power system consists of a 480-V 60-Hz generator
supplying a load ZLoad 4 + j3 2 through a transmission line of
impedance ZLine = 0.18 + j0.24 9.
=
1. If the power system is exactly as described above (see Figure a),
what will the voltage at the load be? What will the transmission line
losses be?
2. Suppose a 1: 10 step-up transformer is placed at the generator end
of the transmission line and a 10: 1 step-down transformer is placed
at the load end of the line (see Figure b). What will the load voltage
be now? What will the transmission line losses be now?
Transcribed Image Text:A single-phase power system consists of a 480-V 60-Hz generator supplying a load ZLoad 4 + j3 2 through a transmission line of impedance ZLine = 0.18 + j0.24 9. = 1. If the power system is exactly as described above (see Figure a), what will the voltage at the load be? What will the transmission line losses be? 2. Suppose a 1: 10 step-up transformer is placed at the generator end of the transmission line and a 10: 1 step-down transformer is placed at the load end of the line (see Figure b). What will the load voltage be now? What will the transmission line losses be now?
V = 480 / 0° V
I
T₁ I
1:10
line
V = 480 / 0° V
line
0.18 Ω
www
0.18 Ω
Z line
(a)
Z line
(b)
j 0.24 Ω
j0.24 S
V
load
+
T₂
10:1
Į
load
Z₁
load
4+j3n
I load
V load
+
Z to
load
4+j3N
Transcribed Image Text:V = 480 / 0° V I T₁ I 1:10 line V = 480 / 0° V line 0.18 Ω www 0.18 Ω Z line (a) Z line (b) j 0.24 Ω j0.24 S V load + T₂ 10:1 Į load Z₁ load 4+j3n I load V load + Z to load 4+j3N
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