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Exam review. Introduction to Engineering Systems Lecture 11 (10/02/2009). Prof. Andrés Tovar. Announcements (1/4). Optimizing your design. Congratulations on your performance on the Tower! There were tough challenges. This year was new for us. Thank you for “bearing with us”
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Exam review Introduction to Engineering Systems Lecture 11 (10/02/2009) Prof. Andrés Tovar
Announcements (1/4) Optimizing your design • Congratulations on your performance on the Tower! • There were tough challenges. • This year was new for us. Thank you for “bearing with us” • Limit States Met? • Experimentally or after correction, either way counts! • Team 1s will be contacted Friday afternoon • K’nexkits • Return to Natalie. Use inventory sheet. Due Friday, Oct. 9 • You get a grade for this! Easy points. • Just report what you have in your kit so that she can restock it!
Announcements (2/4) • Engineering process over outcome • Show your work in presentation and report • Show systematic decision making in tower design • Rubric for Project 1 (15% of course grade) • 40% Report • 25% Presentation • 25% Demonstration • 10% Peer Evaluation
Announcements (3/4) • Report due Monday, Oct. 5, 8 AM • Drop off: Learning Center Section Tray on top of lockers • Sections: Cover sheet, Abstract, Results/Discussion, References • Body: 4 to 6 pages • All group members must sign the cover sheet (Agreement) • Grading Rubric comes straight from LC 6 document • Use the template of a good report • 7 Minute Presentation next week • Post on I:\courses\eg\eg11111.xx\netid\dropbox • Bring a back up copy on USB Drive • Business Casual • Get to class early! • Not everyone has to speak. Practice!
Announcements (4/4) • Peer evaluations • CATME System: you should have created a password • Confidential evaluation / feedback • Oct 9 – Oct 15 • You will get an e-mail • No homework this week • Course Instructor Feedback (CIF) • http://www.nd.edu/~cif/ • Oct 2 – Oct 9
Exam – Module 1 • When: Tue, Oct 6, 8 – 9:15 AM • Where: Stepan Center • Doors will open at 7:50 am to begin filling out scan sheets • What to bring: • Student ID • Calculator (and a back up – cell phone doesn’t count) • Pencils • One page sheet of any information you want (8.5x11”) • No cell phones or other communication devices! • Format: 30 multiple choice questions
Exam – Module 1: Reading material • Lectures posted on Concourse • Learning Center guides • Homework assignments • Reference book • Sections 1.1, 1.2, and 1.4 • Chapters 4 and 5 • Chapters 9 and 10 • All Matlab videos
Exam – Module 1: Topics Matlab Statistics Probability F.O.S. Engineering Design Process Tower bracing and metrics Physics of Towers: Forces Measuring and error Line fit Sum of Squared Error Technical Communication Modeling Theoretical models (Newton's, etc)
Example problem Answer: c
Example problem Answer: d
Example problem Plot 2 Plot 1 Plot 4 Plot 3 Answer: a • Which of the plots is produced by the following MATLAB script: x=0:10; y=x.*x; c=polyfit(x,y,1); z=c(1)*x+c(2); plot(x,y,'*’); hold on plot(x,z,'--'); hold off • Plot 1 • Plot 2 • Plot 3 • Plot 4 • The expression or statement is incorrect
Example problem Answer: c
Example problem Answer: b
Example problem 20 cm 15 cm 10 cm Answer: e • Consider a sub-assembly of width 10 cm, depth 15 cm, and height 20 cm. If this sub-assembly is braced using two diagonal members in their external wall (see Figure) then its bracing ratio is • 250/600 • 424/600 • 50/70 • 1/2 • 5/8