The figure represents the equivalent circuit of a single-phase transformer, if after doing the respective tests the following values have been obtained: R1 = R'2 = 0.08 X1 = X'2 = 0.20 Re = 1000 Q; Xm = 400 Q It is supplied to the load Z' at 240 V, 6 kVA, with a power factor of 0.85 lagging at nominal voltage. Assuming the output voltage as reference to V'2 = 240 / 0°. Calculate: a) The voltage V1 b) current I1 c) the input power factor. R, X1 R2 X2 LFe = E'2 V2 Re Xm

Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Chapter3: Power Transformers
Section: Chapter Questions
Problem 3.32MCQ
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The figure represents the equivalent circuit of a single-phase transformer, if
after doing the respective tests the following values have been obtained:
R1 = R'2 = 0.08 Q X1 = X'2 = 0.2 0
Re-1000 Ω, Xm -400 Ω
It is supplied to the load Z' at 240 V, 6 kVA, with a power factor of 0.85 lagging
at nominal voltage. Assuming the output voltage as reference to V'2 = 240 / 0°.
Calculate:
a) The voltage V1
b) current 1
c) the input power factor.
R, X1
I'2
R2 X2
10
V, )
= E'2
Re
Xm
Transcribed Image Text:The figure represents the equivalent circuit of a single-phase transformer, if after doing the respective tests the following values have been obtained: R1 = R'2 = 0.08 Q X1 = X'2 = 0.2 0 Re-1000 Ω, Xm -400 Ω It is supplied to the load Z' at 240 V, 6 kVA, with a power factor of 0.85 lagging at nominal voltage. Assuming the output voltage as reference to V'2 = 240 / 0°. Calculate: a) The voltage V1 b) current 1 c) the input power factor. R, X1 I'2 R2 X2 10 V, ) = E'2 Re Xm
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