Mech1100 Exam 1 & 2 Review

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University of Texas, Dallas *

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1100

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Mechanical Engineering

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Apr 3, 2024

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MechE Exam Review Exam 1 : Ethics : It is OK to say we viewed the ethics lecture when we did not view it. True or False? Licensed professional engineers are obligated to take 1 hour of ethics training every year. True or False? The ASME code of ethics is very long. True or False? According to the UTD code of conduct, it is the responsibility of each student to know the rules and regulations which govern student conduct. True or False? It is the engineer’s responsibility to know the requirements of the code of conduct. True or False? Engineering work can impact the lives of people. True or False? According to the lecture, ethics is only common sense. True or False? There is some overlap between the codes of ethics given by different engineering societies. True or False? The Texas Engineering Practice act includes rules concerning the practice of engineering. True or False? Obtaining an ABET degree in engineering is all it takes to get a PE license. True or False? According to the National Society of Professional Engineers, a mechanical engineer can perform services in any engineering discipline. True or False? It is the company’s responsibility to abide by the requirements of the code of conduct and protect the engineer. True or False? Normative ethics include procedures for answering “what ought I to do.” True or False? The lecture stressed that engineering ethics is serious business. True or False? The laws, rules, and codes of conduct protect everyone. True or False?
Orthographic and Isometric Drawings: If we physically put an object in a glass box and map the object onto the sides of the box as shown in the lectures, we would get the six principal orthographic views. True or False? If a hidden line is shown in a view, we should add dimensions to locate the hidden line in that view. True or False? Engineers must be able to communicate by two-dimensional and/or three-dimensional drawings. True or False? When a visible line overlaps over a hidden line in an orthographic view, the line should be rendered as a dashed line. True or False? According to the lectures, we should use the first angle projection in all the drawings used in our class. True or False? Requirements, Criteria, and Constraints A lead user can be one of the following: I think the exact answer from the quiz was a person who camps in the arctic or something. Normally, a lead user is “people who deal intensively with a problem in a special scope for which there is no suitable solution existing on the market.” The lecture includes a man named Jake because: he is an example of a persona, “personal customer” Developing the affinity diagram requires discussions and brainstorming. True or False? The requirements list should be developed at the start of a project and should not be changed in order to avoid extra costs. True or False? Dislikes (negative statements) should be listed as requirements. True or False? When eliciting customer needs data, we can ask stakeholders about issues they may consider when purchasing a similar product. True or False? Ill defined problems make engineering fun according to the lecture. True or False? A needs tree is used to help us spend time on the most important stakeholders. True or False?
Diagramming a requirement requires a modality to identify constraint versus criteria. True or False? The Kano curve is a plot representing: The kano model prioritizes your feature ideas into a clear development plan based on performance enhancement and customer satisfaction levels. If you have three solutions which passes all the constraints, we should: Choose the solution that meets the most criteria. The diagram described in the lecture to analyze: “what happens?” and “who touches?” and “How often?” is called: Case diagram When someone says they wish to see a feature incorporated into the design, the engineers should completely ignore this “wish” and stay focused. True or False? The job of the engineer is to: (Select the most appropriate answer) Come up with a solution that meets constraints and criteria set by the client Prototyping Prototypes should be of a final production quality. True or False? Prototypes must be physical and should always be made from physical materials. True or False? When should we build our prototype? (select the most appropriate answer) At the beginning of your project, during the brainstorming/idea stages. When building a prototype, we should ask “WHY” things are done in order to add requirements. True or False? After the prototype is built, the project is complete. True or False? Requirements are the backbone of projects. True or False? A SolidWorks model is which of the following? Virtual, High Fidelity Model Testing can be done using virtual simulations or physical prototypes. True or False?
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If we want to learn about the frictional performance of a brake pad we should build the entire braking system. True or False? Creating a model has the same value as creating a picture. True or False? Exam 2 Wind Power Calculations : The objective of this week’s lecture is to learn about contemporary issues related to the conversion of a raw energy source into useful energy. True or False? In the lecture video example, when a train reaches the bottom of a drop in the rollercoaster, it has the highest kinetic energy. True or False? It is not possible to convert energy from one form to another. True or False? Wood has a higher heating value (MJ/Kg) than natural gas. True or False? Wind turbines produce toxic emissions while generating electricity. True or False? According to the Betz limit, approximately 80% of the energy of the wind can be extracted by a wind turbine. True or False? When neglecting the friction losses for the roller coaster calculations (as calculated in the lecture), the error in the final velocity is more than 10%. True or False? Engineers working in the USA must be familiar with the British Thermal Unit (Btu). True or False? According to the lecture, an object at rest has a high kinetic energy. True or False? When using coal as an energy source to produce electricity, about 60%-70% of the energy is lost to the environment. True or False? According to the lecture, gravitational potential energy is computed using U = m g Δh. True or False? The units of density are Kg/m2. True or False?
Heating Value is a measure of how much energy we can obtain from raw materials through a combustion process. True or False? A larger plot of land is needed for generating 100MW of power from wind energy than typical fossil fueled generators. True or False? Design Process: It is best to brainstorm in a relaxed manner and collect the brainstorming notes later. True or False? We should keep no record of ideas that are not used. True or False? The step labeled “Implement,” as presented in the lecture, is to perform the final test on your best design. True or False? After the Morph chart is completed, we need to develop requirements to eliminate some of the paths on the Morph chart. True or False? There may be opposing requirements for a design according to the lecture. True or False? Communicating the design to others is an important part of the engineering design process. True or False? At the end of the design process, we should have a lot of different designs. True or False? The Morph chart can be used to develop thousands of ideas in a short time. True or False? A morph chart should be developed individually without discussions with others according to the lectures. True or False? According to the lecture, engineers use math and physics, even though engineers are different from mathematicians and physicists. True or False? Once lines are drawn over the Morph chart to define paths, a design can be easily created to represent a particular path. True or False? According to the lecture, it is best to start writing the report after completing the last step of the design process. True or False?
We should start the brainstorming process immediately after we define the goals. True or False? The lines drawn over the Morph chart in the lecture represent different design ideas. True or False? Detail Design/AutoCAD: The command LINETYPE, demonstrated in the lecture, is used to load hidden lines and centerlines. True or False? A horizontal line in an Orthographic Front View is rendered at 30 degrees from the horizontal in the isometric view. True or False? The following commands give a vertical line. True or False? (ENTER and ESCAPE shown in the lines below represent hitting the ENTER key or the ESCAPE key on your keyboard). Line ENTER 0,0 ENTER 10,0 ENTER ESCAPE To save a drawing to PDF, as shown in the lecture, we can print the drawing to ANSI A (8.1 x 11 inch). True or False? The command DIMLIN is used to give either the vertical or horizontal distance between two points. True or False? When a command is completed in AutoCAD, pressing the ENTER key on the keyboard repeats the command. True or False? A scale of 2:1 is half scale. True or False? AutoCAD is a high-level CAD software. True or False? When we print using the option “Fit to Paper,” the scale will be 1:1. True or False? A scale of 2:1 is half scale. True or False?
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The command DIMCENTER is used to show the centerlines of a circle. True or False? In isometric mode, hitting F8 on the keyboard snaps the orientation of the lines to the isometric grid. True or False? Typing DS in AutoCAD is used to enter drafting setting where we can change the grid to isometric snap mode. True or False? When drawing an isometric view, the commands Ellipse, isocircle, gives a representation of a circle in the isometric view. True or False? To toggle between the front, top, and side views in an isometric drawing in AutoCAD, we can push the F5 key on the keyboard. True or False? Ethics (again, slightly different): There is some overlap between the codes of ethics given by different engineering societies. True or False? The laws, rules, and codes of conduct protect everyone. True or False? According to the National Society of Professional Engineers, a mechanical engineer can perform services in any engineering discipline. True or False? Obtaining an ABET degree in engineering is all it takes to get a PE license. True or False? Licensed professional engineers are obligated to take 1 hour of ethics training every year. True or False? It is OK to say we viewed the ethics lecture when we did not view it. True or False? The Texas Engineering Practice act includes rules concerning the practice of engineering. True or False? According to the UTD code of conduct, it is the responsibility of each student to know the rules and regulations which govern student conduct. True or False? It is the engineer’s responsibility to know the requirements of the code of conduct. True or False?
According to the lecture, ethics is only common sense. True or False? The lecture stressed that engineering ethics is serious business. True or False? It is the company’s responsibility to abide by the requirements of the code of conduct and protect the engineer. True or False? The ASME code of ethics is very long. True or False? Normative ethics include procedures for answering “what ought I to do.” True or False? Engineering work can impact the lives of people. True or False? Engineers are responsible to know the law pertaining to the engineering profession. True or False? It is OK to say we viewed the ethics lecture when we did not view it. True or False?