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PS10_Solution[2] - Name J Section EE331 Homework PS10 —...

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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)“ ;‘ IDV<DO q Ll - (0‘59. ; o 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 :1 1, iii: 1392 24010°V w « :f: 3 3‘7. . y a \ ’4‘ g} M ' ' . ° $1.64.. ~,3»~%\'7 n : S : rww * ' . 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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