ISE515_-_exam_1 - Manufacturing Process Engineering ISE 515...

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Manufacturing Process Engineering ISE 515 001/601 Exam #1 October 6 th , 2009 Name: Solution Section: Score: This is a closed book, closed note exam but you are allowed to use an 8½” x 11” cheat sheet with your own notes written on both sides. You are allowed to use a calculator to solve the problems but you are not allowed to use a computer of any kind. You are expected to solve the exam without receiving help from anybody else. Total allowed exam time is 1 hr and 15 minutes. The following problems are worth 2 points each. 1. Name the three primary bonds between atoms: a) Ionic b) Covalent c) Metallic 2. Which crystal structure has the fewest number of slip planes: a) FCC, b) HCP, c) BCC, d) HCC, e) FBC Answer:___b_______ 3. A material with very few crystal defects would have the following material property: a) high ductility, b) high electrical conductivity, c) high thermal conductivity, d) low ductility, e) low modulus of elasticity, f) low melting point Answer:____d______ 4. Polymers are held together by the following two bonds: a) hydrogen bonding, b) van der Waals bonding, c) ionic bonding, d) metallic bonding, e) adhesive bonding, f) covalent bonding, g) London bonding, h) valence bonding 5. What are the three types of static stresses to which materials are subject: a)__tension_________ b)____compression_____ c)____shear_____________
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6. Which one of the following hardness testing methods does not measure the size of the indentation: a) Knoop, b) Vickers, c) Brinell, d) Rockwell Answer:__d_____ 7. Which of the following material properties normally improves in metals if the temperature is increased: a) hardness, b) ultimate tensile strength, c) modulus of elasticity, d) ductility, e) yield strength, f) coefficient of friction, h) shear strength Answer:___d____ 8. When using different metals in an assembled part the following material property can jeopardize the integrity of the structure: a) modulus of elasticity, b) coefficient of thermal expansion, c) coefficient of electrical conductivity, d) coefficient of friction, e) specific heat, f) coefficient of thermal conductivity Answer:____b___ 9. A tolerance is which one of the following: a) clearance between a shaft and a mating hole, b) measurement error, c) total permissible variation from a specified dimension, d) variation in manufacturing Answer:_____c___ 10. Surface roughness is normally displayed as an R a -value which stands for: a) root mean square, b) maximum waviness, c) average roughness, d) average waviness, e) maximum roughness, f) mean waviness, g) mean roughness
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ISE515_-_exam_1 - Manufacturing Process Engineering ISE 515...

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