The transformer described above delivers a load of 4 kVA and with a lagging power factor of 0.8 with the secondary at its rated voltage as shown in Figure Q3.2. R 4 kVA V, (RMS) R, 0.8 lagging power factor secondary ated N: 1 Fig. Q3.2 Part 3.9: Considering the new operating condition, determine the secondary current in units [A] Part 3.10: Determine the primary current in units (A] Part 3.11: Determine the magnitude of the primary voltage under this new operating condition [V]

Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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Transformer rated power [VA]
Primary voltage rating [V]
Secondary voltage rating [V]
Open circuit test: real power measurement [W]
Open circuit test: line current measurement [A]
Short circuit test: real power measurement [W]
Short circuit test: primary voltage measurement [V
6750
240
480
125
1.3
320
36
Transcribed Image Text:Transformer rated power [VA] Primary voltage rating [V] Secondary voltage rating [V] Open circuit test: real power measurement [W] Open circuit test: line current measurement [A] Short circuit test: real power measurement [W] Short circuit test: primary voltage measurement [V 6750 240 480 125 1.3 320 36
The transformer described above delivers a load of 4 kVA and with a lagging power factor of 0.8
with the secondary at its rated voltage as shown in Figure Q3.2.
R.
4 kVA
0.8 lagging
power factor
V, (RMS)
R,
secondary.rated
N: 1
Fig. Q3.2
Part 3.9:
Considering the new operating condition, determine the
secondary current in units [A]
Part 3.10: Determine the primary current in units (A]
Part 3.11: Determine the magnitude of the primary voltage under this new
operating condition [V]
Part 3.12: Determine the copper losses under this operating condition in
units (W)
Part 3.13: Determine the core losses under this operating condition in units
[W]
Part 3.14: Calculate the transformer efficiency for this operating condition as
a percentage [%)
Transcribed Image Text:The transformer described above delivers a load of 4 kVA and with a lagging power factor of 0.8 with the secondary at its rated voltage as shown in Figure Q3.2. R. 4 kVA 0.8 lagging power factor V, (RMS) R, secondary.rated N: 1 Fig. Q3.2 Part 3.9: Considering the new operating condition, determine the secondary current in units [A] Part 3.10: Determine the primary current in units (A] Part 3.11: Determine the magnitude of the primary voltage under this new operating condition [V] Part 3.12: Determine the copper losses under this operating condition in units (W) Part 3.13: Determine the core losses under this operating condition in units [W] Part 3.14: Calculate the transformer efficiency for this operating condition as a percentage [%)
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