Solutions+ExamTwo2040Spr09 - SOLUTIONS Second Exam Circuit...

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SOLUTIONS Second Exam Circuit Analysis ECE2040-D Spring 2009 Ingram Name:________________________________________ INSTRUCTIONS: 1. Closed book, two pages, front and back, of notes, and calculator allowed. 2. Write answers on answer sheets, one side only, in order. 3. Staple answer sheets to back of this test (include this sheet). 4. 1hour and 20 minutes will be allowed for the exam. Problem Worth Grade 1 30 2 35 3 35 Total 100
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1. For the resistor circuit below, find the value of R that maximizes the power absorbed by the load resistance, L R = 50 Ω . The maximum power is transferred when the output resistance is equal to the Thevenin’s resistance across the same pair of terminals. The quickest way to solve this problem is to remember that one way to get the Thevenin’s resistance is to deactivate the independent sources in the network (for voltage sources, this means replace them with “shorts” or wires), and then solve for the equivalent resistance across the terminals. In this circuit, after deactivation, the resistor of
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This note was uploaded on 09/17/2009 for the course ECE 2025 taught by Professor Juang during the Spring '08 term at Georgia Tech.

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Solutions+ExamTwo2040Spr09 - SOLUTIONS Second Exam Circuit...

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