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Exam%202003 - Last Name First Name Student ID MATERIALS...

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Last Name:_____________________________ First Name: ______________________ Student ID#: _________________________ MATERIALS 2O03/ENGINEERING 2O03 DAY CLASS Profs. D. S. Wilkinson and G. Xu DURATION OF EXAMINATION: 3 hours McMaster University Final Examination December 2003 This examination contains 9 pages and 12 questions. You are responsible for ensuring that your copy of the paper is complete. Bring any discrepancy to the attention of your invigilator. A 1 2 3 4 4 6 7 8 Total SPECIAL INSTRUCTIONS: Aids allowed: 1 page crib sheet, nominally 8½ by 11 in. McMaster standard Casio FX-991 calculator Answer all questions on the examination copy. Be sure to show your work so that part marks can be awarded for incomplete answers. Be sure to include units with all answers that require them. Marks will be deducted for using an inappropriate number of significant digits in your final answer. For multiple choice questions circle the letter to indicate your answer. The value of each question is shown. The total for the exam is 100 marks . Useful constants: Gas constant, R = 8.31 J/mol-K Charge per electron, e = 1.6 x 10 -19 C Avogadro’s number, N A = 6.02 x 10 23 Boltzmann’s constant, k = 1.38 x 10 -23 J/atom-K = 8.62 x 10 -5 eV/atom-K Part A: The following multiple choice questions are worth 2 marks each. In each case, circle the answer you think is most appropriate. 1. Which of the following crystal structures is NOT close packed? a) face centred cubic b) body centred cubic c) hexagonal close packed d) none of the above Continued on page 2
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Mater 2O03 / Engin 2O03 Final Examination, December, 2003 Page 2 2. Which of the following is the most mobile point defect in a metal crystal? 3. Which of the following properties can be altered significantly by heat treatment? 4. A Frenkel defect in a ceramic material consists of
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