ECE4802_Final_Sum07

ECE4802_Final_Sum07 - ECE 4802 - Project Engineering and...

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ECE 4802 -- Project Engineering and Professional Practice FINAL EXAM July 31, 2007 Page 1 of 13 Name: ________________________________________ Student Number: ____________________________ 1. Check that your exam includes all 13 pages. Cover page, 8 problem pages, two blank pages, Z tail end table, and engineering economy formulas. 2. PRINT your name and student number in the spaces at the top of pages 1 – 13 of this exam. 3. Read all problem statements carefully. Points will be deducted for failure to follow instructions. 4. Show ALL of your work on pages provided to receive full credit on problems and do not separate your exam pages. Problems solved without showing the solution steps may not receive full credit. 5. If you need extra space, use the blank pages provided. Clearly note the appropriate problem for any work on these blank pages, and write your name on these blank pages. 6. You are permitted three sheets (8 1/2 x 11), double-sided, of handwritten notes. The use of any other resources is prohibited. You are to turn in these sheets with your exam, please place your name on each page. 7. Calculators are permitted; however, you are not allowed to use the calculator memory to store notes, etc. 8. Absolutely NO CELL PHONES. Cell phones must be off and stowed during the exam. 9. This exam lasts for 170 minutes. Point values are listed for each problem to assist you in best using your time. Please sign below to claim 25 bonus homework points: I hereby certify that I have completed (or intend to complete) the on-line course survey for ECE4802. _______________________________________________________ Problem 1. Process capability (15 points) Problem 2. System reliability (15 points) Problem 3. Process statistics (15 points) Problem 4. Eng. Economy (15 points) Problem 5. Eng. measurements (10 points) Problem 6. Short answers (30 points) TOTAL . (100 points)
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Name: Student #: July 31, 2007 2 ECE 4802 Final Exam Problem 1. Process Capability (15 points) A product design has the following specification for a particular parameter: Target Value: 740 Tolerance: ± 5% Once the product is manufactured, this parameter varies according to a normal distribution and the measured values for the actual mean (AM) and standard deviation ( σ ) are: AM = 735 σ = 15 Sketch this situation on the axis below. Include and label the target value, upper and lower specification limits, the actual mean, and the probability distribution curve. Also, compute the process capability index, the shifted process capability index, and the percentage of manufactured products outside of the specification limits, i.e., the percent bad. Cp Cpk % bad | | | | | | | 650 675 700 725 750 775 800
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Name: Student #: July 31, 2007 3 ECE 4802 Final Exam Problem 2. Product Reliability (15 points) Your company manufactures disc drives. You are responsible for the reliability testing and for generating statistics and guidelines for your customers. A batch of 1000 disc drives has been selected at random from the manufacturing
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ECE4802_Final_Sum07 - ECE 4802 - Project Engineering and...

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