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SecondExam_s03

SecondExam_s03 - ESE 271 Second Exam Name Spring 2003 ID...

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Unformatted text preview: ESE 271 Second Exam Name: Spring, 2003 ID Number: Do not place your answers on this front page. Prob. 1 (20 points): Prob. 2 (35 points): Prob. 3 (25 points): Prob. 4 (10 points): Prob 5: (10 points): Prob. 1 (20 points): Find the single cosinusoid that is equal to 4cos(3t—30") + 55in(3t+45°) {ﬂ}:- 4 “(at-30“) + Inc-1(3),“ +4fa-70') F: 4 “3‘90 +r —¢.¢° : 4'1“ 3" 64—}A4-Jvao +J- cm 4.1- -J5A-43n 4r :3 “)2 T— -J' 3.J‘36 _, wires : J71+ 175362 4 5"“ 7 : 9,72 tam" 1H1): «9.92 cnht ~ 3&3”) Prob. 2 (35 points): Find the phasor voltage V for the cosinusoid voltage v(t). (You; answer must be as a single complex number, but you may give it either in rectangular or polar form.) 211. Gus So I-vTJM-F: ) AND-r”: Sogv'hour Jo A Mann. ANA‘Y-‘VJ' __________,___.._ V w 2 . :é‘ V”_‘r _,_ .11 + V'wzo 1—) (2+J'2)V"J2w M" J“ 7' . -J-2"/ Inf-"V 4, —-—-" B.5 _:)> z c .JIZV (2+J2)V*J2 “737;”:‘7 Prob. 3 (25 points): Find the output voltage 1.100) as a. cosinusoid. m 4m 460520001. 74,.(1') J— :-'——-’————--— — - 4 kn. JWC J anoﬁ'éxxoh‘ J V _ la '3‘ — 2 K-‘q- 4- Vx _Va :0 4" ﬁg. Va(2-j)=3 yo = 4]; {41" A;0(t): 4J3.— Cpq [1009i +4fo) :: £56 “4(1ooo't +4f°) Prob. 4 (10 points): Find the eﬂ'ective value In“, for £(t). 1'0) = 2 + 3 cos (2t+ 30°) + 4 cos(5t — 45°) Prob. 5 (10 points): Find the eﬂective value In," for the following periodic wave. ...
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