Engineering > EXAM > Chapter 9- Materials Engineering Exam Questions and Answers (All)

Chapter 9- Materials Engineering Exam Questions and Answers

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The understanding and modification of the structure and properties of materials to improve the performance and processing of the material is called __. - ANSWER Materials Engineering Which of the f ... ollowing categories of material is a type of inorganic material with good conductivity to heat and electricity? - ANSWER Metals The ability of a material to withstand a load that squeezes the material is called __. - ANSWER Compression Strength Which of the following material properties is determined by how well heat is transferred through the material? - ANSWER Thermal Conductivity Which of the following is an application of material engineering? - ANSWER Nanotechnology Which of the following types of tests uses x-rays that pass through the material? - ANSWER Radiography test A small strand of material that ranges 1 nm- 60 nm in width is a __. - ANSWER Nanowire T/F Ceramics are brittle. - ANSWER True T/F Semiconductors are materials that can safely and effectively interact with the human body. - ANSWER False T/F Strain is a bending or twisting force. - ANSWER False T/F Thermal resistance is a reciprocal of thermal conductivity. - ANSWER True T/F Destructive tests and nondestructive tests are the two types of material testing. - ANSWER true T/F A test that sound waves bounce off changes in the material to determine the internal composition of a material is a radiography test. - ANSWER False T/F Nano- sized cylinders of carbon are called buckyballs. - ANSWER False The ability of a material to withstand a force that pulls the material apart. - ANSWER Tensile Strength The ability to return to the original dimensions if the stress is removed. - ANSWER Elasticity The amount of force or load that is applied to a material. - ANSWER Stress The deformation that occurs from stress. - ANSWER Strain The deformation that occurs from the yield point to the fracture point. - ANSWER Plasticity The measurement of how well electricity flows through a material. - ANSWER Conductivity A mixture of a metal with one or more additional elements. - ANSWER Alloy An organic material made up of a long chain of small molecules (primarily made up of carbon and hydrogen atoms) that form a much larger molecule. - ANSWER Polymer A very hard inorganic, refractory, nonmetallic material with little electrical conductivity. - ANSWER Ceramic [Show More]

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