AJ

W2018 MTL 200 M1

General Test Information

  • Date: Friday February 16, 2018

  • Department: Mechanical and Industrial Engineering, Ryerson University

  • Course: Materials Science I (MTL 200)

  • Test Duration: 80 minutes

  • Instructor: Prof. A. Varvani

Test Instructions

  • Closed book test.

  • Calculator allowed.

  • Choose the best answer for multiple choice questions.

  • Use pencil for Scantron sheet.

  • Extra pages can be used if needed.

  • Questions 1-20: 2 marks each; Questions 21-40: 3 marks each.

Sample Questions

Question 1

  • Topic: Electron Arrangement in Ni (Z=28)

  • Question Type: Multiple Choice

Question 2

  • Topic: Atomic Bonding Types

  • Options:

    • (a) Ionic, van der Waals, Metallic, Covalent, Hydrogen

    • (b) Ionic, Covalent, Metallic, Covalent, Hydrogen

    • (c) Ionic, Covalent, Metallic, van der Waals, Hydrogen

Question 3

  • Topic: Interstitial Atoms in FCC/BCC

  • Options: Various coordinates

Question 4

  • Topic: Crystallographic Directions and Planes

  • Options Identifying the Correct Relationships

Additional Concepts

  • Understanding how solidification rates impact amorphous vs crystalline structure.

  • The role of grain size in material strength based on the Hall-Petch relationship.

  • Techniques for microscopic analysis in materials science, including Optical Microscopy and Scanning Electron Microscopy.

Notable Definitions

  • Secondary Bonds: Weak interactions, particularly among noble gases.

  • Atomic Packing Factor: How closely atoms are packed in a crystal structure.

  • Diffusion: Atomic motion in a substance leading to uniform composition in material analysis.

Important Theories

  • Fick's First Law of Diffusion: Relates to diffusion rates within thin plates.

  • Bragg's Law: Used for determining angles in x-ray diffraction.