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202Ex2Sp04Sols

# 202Ex2Sp04Sols - EE-202 Exam II March 8 2004 Name Student...

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EE-202 Exam II March 8, 2004 Name: __________________________________ Student ID: _________________ CIRCLE YOUR DIVISION Division: 201-1 (morning) 201-2 (afternoon) INSTRUCTIONS There are 12 multiple choice worth 5 points each; there is 1 workout problem worth 40 points. This is a closed book, closed notes exam. No scrap paper or calculators are permitted. A transform table and properties table are attached at the back of the exam. All students are expected to abide by the usual ethical standards of the university, i.e., your answers must reflect only your own knowledge and reasoning ability. As a reminder, at the very minimum, cheating will result in a zero on the exam and possibly an F in the course.

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EE-202, Ex 2, page 2 MULTIPLE CHOICE. 1. A transfer function has H ( s ) = K ( s ! z 1 )( s ! z 2 ) ( s ! p 1 )( s ! p 2 ) and has a gain of –2 at s = 0. Then K = : (1) –8 (2) 8 (3) –4 (4) 4 (5) 16 (6) –16 (7) –2 (8) None of above 2. The switch S1 has been closed for a long time and opens at t = 1 ! . Switch S2 closes at t = 1 + . Then v out (2) = (in V): (1) 10 (2) 20 (3) –10 (4) 40 (5) 5 (6) –20 (7) –40 (8) None of above
EE-202, Ex 2, page 3 3. The circuit below has a normalized critical frequency ! c , norm = 1 rad/s. The circuit must be frequency and magnitude scaled so that the new critical frequency is ! c = 10 rad/s the largest capacitor is 0.2 F. The new value of the inductor is L new = (in H): (1) 1 (2) 2.5 (3) 0.01 (4) 0.2 (5) 5 (6) 0.05 (7) 0.1 (8) none of above 4. If a circuit with H ( s ) = 2 ( s + 2)( s ! 2) ( s + 4 + 2 j )( s + 4 ! 2 j ) = 2 s 2 ! 4 ( s + 4) 2 + 4 is excited by the input v in ( t ) = 2 cos(2 t + 45 o )

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202Ex2Sp04Sols - EE-202 Exam II March 8 2004 Name Student...

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