Introduction to Engineering Design

Transcription

1 Introduction to Engineering Design Final Examination Parts A, B & C ANSWER KEY Spring 2008 For Teacher Use ONLY

2 Part A Scoring Conversion Chart Raw Score Conversion Raw Score Conversion Raw Score Conversion Raw Score Conversion Copyright Page 2 of 7

3 IED Part A Multiple Choice Answer Key Question Answer IED Assessment Concepts 1 B Unit 1.1 Intro to Design Process 2 A Unit 1.1 Intro to Design Process 3 D Unit 1.2 Intro to Technical Sketching 4 B Unit 1.2 Intro to Technical Sketching 5 C Unit 1.3 Measurement and Statistics 6 C Unit 1.3 Measurement and Statistics 7 B Unit 1.3 Measurement and Statistics 8 D Unit 1.4 Puzzle Cube 9 A Unit 1.4 Puzzle Cube 10 C Unit 1.4 Puzzle Cube 11 B Unit 2.1 Geometric Shapes and Solids 12 A Unit 2.1 Geometric Shapes and Solids 13 B Unit 2.2 Dimensions and Tolerance 14 D Unit 2.2 Dimensions and Tolerance 15 C Unit 2.3 Advanced Modeling Skills 16 C Unit 2.3 Advanced Modeling Skills 17 D Unit 2.3 Advanced Modeling Skills 18 A Unit 2.3 Advanced Modeling Skills 19 A Unit 2.4 Advanced Designs 20 D Unit 2.4 Advanced Designs 21 C Unit 2.4 Advanced Designs 22 D Unit 3.1 Visual Analysis 23 A Unit 3.1 Visual Analysis 24 B Unit 3.2 Functional Analysis 25 B Unit 3.2 Functional Analysis 26 C Unit 3.3 Structural Analysis 27 B Unit 3.3 Structural Analysis 28 D Unit 3.3 Structural Analysis 29 C Unit 3.4 Product Improvement by Design 30 B Unit 3.4 Product Improvement by Design 31 D Unit 3.4 Product Improvement by Design 32 B Unit 3.4 Product Improvement by Design 33 A Unit 4.1 Marketing and Graphic Design 34 D Unit 4.2 Engineering Design Ethics 35 A Unit 4.2 Engineering Design Ethics 36 B Unit 4.3 Design Teams 37 D Unit 4.3 Design Teams 38 C Unit 4.3 Design Teams 39 A Unit 4.3 Design Teams 40 C Unit 4.3 Design Teams Answer Breakdown: A-10; B-10; C-10; D-10 Copyright Page 3 of 7

4 IED Final Exam Spring 2008 Part B Answer Key Student Name: Part B Total Score /50 1. [6 points- 1 point each] 1.1 B. Object Line 1.2 A. Extension Line 1.3 D. Leader Line 1.4 G. Center Line 1.5 F. Dimension Line 1.6 E. Hidden Line Score #1 (Teacher use only) 2. [4 points- 1 point each] 2.1 A. Mass 2.2 B. Center of Gravity 2.3 D. Surface Area 2.4 C. Volume Score #2 (Teacher use only) 3. [4 points- 1 point each] 3.1 d1=d0*2 3.2 d4= d3=d0+.5 or d3=d0+1/2 3.4 d2=d or d2=d0+1/8 Score #3 (Teacher use only) 4. [6 points- 1 point each] 4.1 translation on X 4.2 translation on Y 4.3 translation on Z 4.4 rotation on X 4.5 rotation on Y 4.6 rotation on Z Score #4 (Teacher use only) 5. [4 points- 1 point each] 5.1 Insert 5.2 Flush 5.3 Tangent 5.4 Angle 6. [4 points- 1 point each] 6.1 A. Define the Problem 6.2 D. Identify Criteria and Specify Constraints 6.3 F. Select an Approach 6.4 H. Make a Model or Prototype Score #6 (Teacher use only) 7. [6 points- 1 point each] 7.1 H. Sweep 7.2 C. Revolve 7.3 G. Coil 7.4 I. Chamfer 7.5 E. Loft 7.6 D. Hole Score #7 (Teacher use only) 8. [4 points- 1 point each] 8.1 Countersink Auxiliary Score #8 (Teacher use only) 9. [4 points- 1 point each] 9.1 Horizontal balance because the left and right sides are equal 9.2 The bowl s surface is smooth to prevent foods from sticking or easy cleanup. 9.3 Does it blend, mix or whip like it is suppose to 9.4 Example: Finite Element Analysis (FEA) Score #9 (Teacher use only) 10. [8 points- 1 point per line] Score #10 (Teacher use only) Score #5 (Teacher use only) Copyright Page 4 of 7

5 Copyright Page 5 of 7

6 IED Final Exam Spring 2008 Part C Answer Key Student Name: Part C Total Score /50 1. [6 points 1 point correct line type; 1 point for correct purpose] Score #1 (Teacher use only) 1.1 Line type: Hidden line Use: A hidden line is used in an orthographic drawing to represent an edge that is concealed behind another surface and that is not visible in the viewing plane. 1.2 Line type: Cutting plane line Use: A cutting plane line illustrates where the cutting plane has passed through the object and the direction in which the section is being viewed. 1.3 Line type: Section line Use: Section lines are used in section views to represent material that has been in contact with the cutting plane. 2. [4 points 2 points each] 2.1 Weight=.616 lbs. 2.2 Maximum Number of Pins to be shipped= 32 Score #2 (Teacher use only) 3. [6 points 1 point each] 3.1 axis 3.4 work plane 3.2 chamfer 3.5 sweep 3.3 profile 3.6 revolve Score #3 (Teacher use only) 6. [6 points 2 points each] 6.1 L. Communicate Processes & Results 6.2 F. Select an Approach 6.3 D. Identify Criteria & Specify Constraints Score #6 (Teacher use only) 7. [4 points 1 point each] 7.1 Insert 7.2 Rotational, X-axis 7.3 Flush with an offset Score #7 (Teacher use only) 4. [6 points 1 point each] 4.1 Rhythm 4.2 Rhythm because the arrow is a recurring sequence or pattern. 4.3 Formal balance 4.4 Formal balance is because the part is the same in size and shape in relation to the vertical axis. 4.5 Proportion 4.6 Proportion because the size of the toys are related to each other by a ratio. Score #4 (Teacher use only) 8. [5 points 1 point each] Any five is acceptable: Drawer, Drawing Title, Date, Scale, Company/School Name, Revision, Checked by, Material, Tolerance, Sheet numbers, Sheet size, Part number, Approved by. Score #8 (Teacher use only) 9. [8 points 1 point each line] Record answers directly on the orthographic projection on Page 8. Score #9 (Teacher use only) 5. [5 points 1 point each] 5.1 Client Company: Outdoor Athletic Products 5.2 Target Consumer: Novice disc golfers 5.3 Problem Statement: Novice disc golfers can t throw the disc very far. 5.4 Design Statement: To design, develop and prototype an affordable disc that will help the novice disc golfer achieve some distance Copyright Page 6 of 7

7 5.5 Constraints: Material is polyethylene; weight under 175 grams; complete in three weeks; Maximum $2.25 per disc production cost. Score #5 (Teacher use only) Copyright Page 7 of 7