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e1f06 - Name ME 513 Exam 1 Fall 2006 Note To help you...

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Name: ______________________________ ME 513 Exam 1 – Fall 2006 --- 11/15/2006 Note: To help you complete this exam, you may refer to your class notes, your homework, solutions provided to you and other material distributed as part of the course, but you may not refer to the text (Kinsler, Frey, Coppens and Sanders) or to any other acoustics text Problem 1: ____________/20 Problem 2: ____________/20 Problem 3: ____________/20
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Problem 1. (i) What is sound? (ii) The forced displacement of a SDOF oscillator can be written as: where A is complex. The ________________________ part of the solution corresponds to the physically measurable displacement. (iii) What are the characteristics of a “mass-like” impedance? (iv) A force is applied to a linear SDOF system having a natural frequency ω 0 . At what frequency does the system respond? (v) For a system to vibrate, it must possess ____________________________________________ . (vi) How does the addition of damping affect the natural frequency of a SDOF system?
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(vii) The wave number is a measure of _______________________________________________________ . (viii) The restoring force acting on a segment of a tensioned string is not proportional to
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