(1) (iii) Write the expressions of the line-to-neutral voltages Vas, Von Ven and then determine the line-to-line voltages Vab, Vic, Vca on the secondary. Determine the currents Ina Inb, Inc on the secondary (magnitude and phase). Determine the phase and line currents on the primary side. 1
(1) (iii) Write the expressions of the line-to-neutral voltages Vas, Von Ven and then determine the line-to-line voltages Vab, Vic, Vca on the secondary. Determine the currents Ina Inb, Inc on the secondary (magnitude and phase). Determine the phase and line currents on the primary side. 1
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Question
Please answer the b) part of the question
Transcribed Image Text:2.
(a)
(b)
A 100 KVA, 4000 V / 200 V, 50 Hz single-phase transformer
has 100 secondary turns. Determine:
(i) The primary and secondary currents.
The number of primary turns.
Three single-phase transformers are connected in Delta-
Wye (A-Y) as shown in Figure 2.1. Each transformer is rated
100 kVA, 2300/13800 V RMS, 50 Hz. The total three-phase
load L is 270 kVA with a power factor of 0.866 lagging. The
input voltages are:
VAB = 23000° VBC = 2300 Z-120° VCA = 2300 120°
Assume that the transformers are ideal and the line-to-
neutral voltage on the secondary are in phase with the input
voltages.
A
B
C
200000
00000
n
100000
Transcribed Image Text:(1)
(ii)
(iii)
Figure 2.1
Write the expressions of the line-to-neutral voltages Vas
Von
}
Van and then determine the line-to-line voltages Vab, Voc,
Vca on the secondary.
Determine the currents Ina Inb, Inc on the secondary
(magnitude and phase).
Determine the phase and line currents on the primary side.
QUESTION 3(25 Marka)
1
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