Final 1a

Final 1a - ME-438 INTRODUCTION TO PHYSICAL METALURGY...

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1 Louisiana State University Mechanical Engineering Department ME 2733- Materials of Engineering; Spring 2003 (Section 2) Final Exam Part I SAMPLE May 14, 2003 Name:________________________________________ Circle the right answer or choose T (True) or F (False) 1 . The electronic subshells in an atom (described by the quantum number l ) are labeled using certain lowercase letters. Which of the following letters does not signifies an electronic subshell? a) s b) p c) g d) d e) f 2. Van der Waals bonds are stronger than covalent bonds……………………………. T F 3. Which of the following is not part of the empirical Hume-Rothery rules for complete solubility in solid solution formation? a) same size atoms ( ± 15%) b) same atomic mass ( ± 15%) c) same crystal structure d) similar electronegativity e) same valence 4. Carbon forms a substitutional solid solution when added to iron…………………. . T F 5. In a n-type semiconductor the electrons are majority charge carriers………………. T F
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Final 1a - ME-438 INTRODUCTION TO PHYSICAL METALURGY...

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