MCHE 365 Exam Questions and Correct Answers Latest Update 2024

MCHE 365 Exam Questions and Correct Answers Latest Update 2024 When two dissimilar metals are in contact in the presence of an electrolyte, what type of reaction is created? a. Boundary Layer lubrication b. Grain Refinement c. Galvanic Couple d. Chemical Diffusion - Answers c. Galvanic Couple Six Sigma focuses on the reduction of _______, whereas Lean focuses on the reduction of _______. - Answers efficiency, waste Concepts discussed involving Sustainability Engineering include (select all that apply): a. Carrying Capacity b. Life Cycle Assessments c. Embodied Energy d. Alloy Classification e. Integration of Material Processes and Properties - Answers a. Carrying Capacity b. Life Cycle Assessments c. Embodied Energy Which surface treatment imparts tensile residual stresses into a material to improve mechanical properties? a. Shot Peening b. Vapor Deposition c. Case Hardening d. Hard Facing e. All of the Above f. None of the Above - Answers f. None of the Above In the Coulomb equation the ________ is predicted by relating shear strength to ________. - Answers Coefficient of Friction, Hardness Be able to indicate all points and regions on stress-strain diagram: - Answers Quizlet won't let me upload picture without paying Which surface treatment results in hardening of a thin layer of the surface by changing its composition through a chemical diffusion process. a. Vapor Deposition b. Hard Facing c. Case Hardening d. Shot Peening - Answers c. Case Hardening Which of the following ARE principles of DFMA? a. Because they can add cost, secondary and finishing operations should be minimized b. Minimize part count c. Standardize parts and materials d. Complete materials selection after prototyping stage e. A and B f. A, B, and C g. A, B, C, and D - Answers f. A, B, and C Which defect type is most responsible for plastic deformation in metals? a. Linear b. Planar c. Volume d. Point - Answers a. Linear In the spline failure case study, what was the failure mode determined to be? a. Hydrogen Embrittlement b. Ductile Overload c. Cyclic Fatigue d. Creep e. Impact - Answers c. Cyclic Fatigue Which results in higher pressures at the interface? a. Apparent area of contact b. Boundary Lubrication c. Real Area of Contact - Answers c. Real Area of Contact For many metals, increasing temperature results in a ________ tensile strength, and increasing the strain rate results in a ________ tensile strength. - Answers decreased, increased Corporations are developing Sustainability Goals that address topics ranging from energy use and product life cycle to diversity and inclusion. a. True b. False - Answers a. True ________ is a mechanical strengthening method whereby dislocations pile-up and become entangled impeding crystal slip. - Answers Strain Hardening If steel has a theoretical tensile strength of 20 GPa and a Poisson's ration of 0.33, what is the theoretical shear strength in GPa? - Answers 12.26 GPa Use Equn: tau = sigma/[2*(1+mu)]^(1/2) where mu is value for Poisson's Ratio and sigma is value for tensile strength The theoretical tensile strength of metals is greater than the actual strength because of the presence of ________. - Answers Imperfections From the Toyota Production System (TPS), which of the following terms means, "automation with a human touch"? a. Kanban b. Kaizen c. Jidoka - Answers c. Jidoka Know types of point imperfections and be able to indicate in a figure. - Answers Can't upload pictures In the Archard equation, the "V" represents ________. The equation predicts the phenomenon of ________. - Answers Volume, Wear For an alloy with an initial average grain size of 100 micrometers. If grain size refinement results