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Unformatted text preview: Name: J / Section: EE331 Homework PS10 — spring 2011 Problems from Alexander & Sadiku: CH 13
13.40 (Ans: 34.3 mW) 13.41
13.42 — use 80 Vrms as per problem statement (Ans: 1.25 W) 13.62 (Ans: 7416.4<11.9 VA, and 305.5W) Additional Problems (Instructor Option):
0 13.77 0 13.85
0 Any as assigned by instructor Page 1 of 1 Chapter 13, Problem 40. The primary of an ideal transformer with 21 turns ratio of 5 is connected to a voltage
source with Thevenin parameters VTh = 10005 2000t V and RTh = 100 Q. Determine the
average power delivered to a ZOO-Q load connected across the secondary winding. Macon QT;
(25
W—lomM‘b E7 . ' 200R
‘ - 6 {24%ch 90051 qWMaibs‘dlq ( (3.60) 5200A 9 2 (0051 + : 10351
2P (5)“
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AT 2 “£1 : q/lbsqu" (‘JKMAQO
,3 n Chapter 13, Problem 41. Determine I; and 12 in the circuit of Fig. 13.105. '1 10:2 '2 29 22on° V Figure 13.105
For Prob. 13.41. a Raga} 9m *0 VPVMAX Siqu
\OS‘l a Chapter 13, Problem 42. For the circuit in Fig. 13.106, determine the power absorbed by the 2 Q resistor. Assume
the 80 V is an rms value. F—— n: O.
50 Q -j1 Q j20
1:2
. ' R
7' “OR
80: 0° “0"
2 Q
Ideal .
Figure 13.106 For Prob. 13.42. Q) T.“ : 80"“? , : (.58<~‘L53°A S (504-0.€{-5:y-¢3
’3 ’5 '1 GD [ -. .L L051:
251 l 5 (0.5 5L
mew) Chapter 13, Problem 62. For the network in Fig. 13.126 below, find
(a) the complex power supplied by the source, (b) the average power delivered to the 18-9 resistor. ,, u 2mg:
fi‘fi’ 1“” 2:5 “it? ’ 1:3
my ‘ ' 4 k WW ° W 2W.W»n»»nwww
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24010°V w « :f:
3 3‘7. . y a \ ’4‘ g}
M ' ' . ° $1.64.. ~,3»~%\'7
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. x} n, 3 ~ a; ? Liff‘g Figure 13.126 Re with) Fm. “Mu amok
‘ For Prob. 13.62.
can 1951 2Q: %’)a: [.9752
a Chapter 13, Problem 77.
The three-phase system of a town distributes power with a line voltage of 13.2
kV. A pole transformer connected to single wire and ground steps down the high- voltage wire to 120 V rms and serves a house as shown in Fig. 13.138. (a) Calculate the turns ratio of the pole transformer to get 120 V. (b) Determine how much current a 100-W lamp connected to the 120-V hot line
draws from the high-voltage line. Figure 13.138 -: I 2 fl TURN“ : deosfi’flAt rid-(amp: T Mudd ‘65 CuWM’" (
0‘4 \A§3\ Yuk. . Lgss Tail W33 W Chapter 13, Problem 85. A stereo amplifier circuit with an output impedance of 7.2 k9 is to be matched to
a speaker with an input impedance of 89 by a transformer whose primary side has
3000 turns. Calculate the number of turns required on the secondary side. ...
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- Fall '11
- Rudd
- Electrical Engineering, Alternating Current, Average Power, turns ratio
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