MAE 1351 Exam 1 Questions and 100% Correct Answers

MAE 1351 Exam 1 Questions and 100% Correct Answers descriptive geometry -Answer- A 2D graphical construction technique used for geometric analysis of 3D objects Optimization -Answer- Modification of shapes, sizes, and other variables to achieve the best performance based on predefined criteria Why are most cave drawings and hieroglyphics not considered to be engineering drawings? -Answer- Becuase they were mostly documentation of lifestyle, not instructions on how to build something In what ways did the design of military fortifications change after the discovery of gunpowder and the invention of the cannon? -Answer- Walls became thicker, and more geometrically complex to deflect cannon fire Why did engineering drawings need to become more precise during the industrial revolution? -Answer- reduced misinterpretation so products could be mass produced What were the three traditional roles of engineering graphics? -Answer- communication, record keeping, and analysis What are some of the new roles of engineering graphics created by computer graphics? -Answer- (visualization, analysis, function, and optimization) can produce 3D pictures that can be observed from all sides, can be tested on the computer vs having to test actual models What are some of the advantages and disadvantages of using mechanical drawing instruments, as opposed to mathematical tools, for problem solving? -AnswerMechanical drawing instruments were used to analyze problems without the need to do burdensome math and enabled engineers to create any view of a geometric object from two existing views In what ways can visualization skills be developed? -Answer- by doing special visualization exercises, by building and working with solid models, disassembling and reassembling devices, and sketching T/F The engineering design process follows the same steps as the scientific discovery process, or scientific method -Answer- false T/F To create a revolved feature, the profile and the axis of revolution must be coplanar. -Answer- true