Exam_2_Practice_soln

Exam_2_Practice_soln - MSE 201 section: Practice Exam #2...

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MSE 201 Practice Exam #2 Spring, 2009 Circle your section: Name (print)__________ ________________________________ Sec. 1 M/W (Yingling) Sec. 2 Tu/Th (Irving) I have neither given nor received unauthorized aid on this test. X________________ (signature) No notes, books, or information stored in calculator memories may be used. Cheating will be punished severely. All of your work must be written on these pages and turned in. To receive full or partial credit on numerical problems, you must show your calculations in step-by-step fashion. Units must be shown when applicable and all plots must have labeled axes . Be sure that you read and answer all parts of each question . Multiple choice questions (3 points each): Carefully circle or write only one answer. 1. Diffusion of Ni impurities (solute) in Cu (solvent) a. is a thermally activated process b. increases in rate with increasing temperature c. requires the presence of vacancies d. all of the above 2. In most metals, interstitial diffusion is more rapid than vacancy diffusion because: a. the diffusing atoms are smaller b. there are more open sites c. it is not more rapid than vacancy diffusion
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This note was uploaded on 03/30/2009 for the course MSE 201 taught by Professor Brenner during the Spring '08 term at N.C. State.

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Exam_2_Practice_soln - MSE 201 section: Practice Exam #2...

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