Delmar's Standard Textbook of Electricity (MindTap Course List)
6th Edition
ISBN: 9781285852706
Author: Stephen L. Herman
Publisher: Cengage Learning
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Question
Chapter 29, Problem 2PA
To determine
The minimum kVA rating of each transformer.
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R₁
W
+10 V
R3
+9 V
C₂
R₁
CA
C₁
470 pF
HH
1000 pF
HH
1 με
C4
1 μF
1 uF
C₁
R₂
R4
100 pF
Find
Open-loop
Jain
L₁
5 mH
(a)
Av=S,B={"
H
R₁₂
✓
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(b)
R₁
L₁
000
1.5 mH
R₂
H
1 uF
12
10 mH
A) Calculate the efficiency of the test transformer at the resistive
loads (X-25%, 50%, 75%, 100%, 125% full load).
B) From part (A) draw the plot (efficiency Vs power output) of the
transformer.
C) Discuss the plot of part (B).
a- Determine fH; and Ho
b- Find fg and fr.
c- Sketch the frequency response for the high-frequency region using a Bode plot and
determine the cutoff frequency.
Ans: 277.89 KHz; 2.73 MHz; 895.56 KHz; 107.47 MHz.
14V
Cw=5pF
Cwo-8pF
Coc-12 pF
5.6kQ
Ch. 40. pF
C-8pF
68kQ
0.47µF
Vo
0.82 kQ
V₁
B=120
0.47µF
www
3.3kQ
10kQ
1.2kQ
=20µF
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Chapter 29 Solutions
Delmar's Standard Textbook of Electricity (MindTap Course List)
Ch. 29 - How many transformers are needed to make an...Ch. 29 - Two transformers rated at 100 kVA each are...Ch. 29 - How does the NEC specify that the high leg of a...Ch. 29 - An open-delta three-phase transformer system has...Ch. 29 - If a single-phase load is connected across the two...Ch. 29 - A three-phase transformer connection has a...Ch. 29 - A three-phase transformer connection has a...Ch. 29 - A three-phase transformer bank has the secondary...Ch. 29 - A three-phase transformer bank has the primary and...Ch. 29 - Referring to the transformer connection in...
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