1. Introduction to Engineering Technology, 7 th ed. Pond and Rankinen © 2009Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved. 1 Introduction to Engineering Technology Seventh Edition Robert J. Pond & Jeffery L. Rankinen Chapter 7 The Technical Laboratory

2. Introduction to Engineering Technology, 7 th ed. Pond and Rankinen © 2009Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved. 2 Introduction This chapter is intended to make you aware of how to work safely and effectively in the laboratory and report your findings clearly and efficiently.This chapter is intended to make you aware of how to work safely and effectively in the laboratory and report your findings clearly and efficiently.

3. Introduction to Engineering Technology, 7 th ed. Pond and Rankinen © 2009Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved. 3 Laboratory Technician Be patient and methodicalBe patient and methodical Pay attention to detailPay attention to detail Plan and preparePlan and prepare Be accurateBe accurate Communicate clearly and effectivelyCommunicate clearly and effectively

4. Introduction to Engineering Technology, 7 th ed. Pond and Rankinen © 2009Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved. 4 Scientific Method – Problem Solving State the problemState the problem Form the hypothesisForm the hypothesis Experiment and observeExperiment and observe Interpret the dataInterpret the data Arrive at the conclusionArrive at the conclusion

5. Introduction to Engineering Technology, 7 th ed. Pond and Rankinen © 2009Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved. 5 Performing the Experiment Equipment specifiedEquipment specified Data sheetsData sheets Group workGroup work Conclusions drawnConclusions drawn

6. Introduction to Engineering Technology, 7 th ed. Pond and Rankinen © 2009Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved. 6 Reducing Error in the Laboratory

7. Introduction to Engineering Technology, 7 th ed. Pond and Rankinen © 2009Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved. 7 Data Collection and Calculating Results Scale Resolution – no better than one-half of the smallest division

8. Introduction to Engineering Technology, 7 th ed. Pond and Rankinen © 2009Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved. 8 Data Collection and Calculating Results Digital Meter Accuracy – specified as +/- (percent of reading + number of units in the least significant digit)Digital Meter Accuracy – specified as +/- (percent of reading + number of units in the least significant digit) Example: Stated accuracy: +/- (0.5 + 2) Scale reading of 1000 for Figure 7.10 1000*0.005+2 = +/- 7 volts

9. Introduction to Engineering Technology, 7 th ed. Pond and Rankinen © 2009Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved. 9 Presenting Data - Graphing

10. Introduction to Engineering Technology, 7 th ed. Pond and Rankinen © 2009Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved. 10 Reporting Outlining the written reportOutlining the written report Objective sectionObjective section Equipment sectionEquipment section Theory sectionTheory section Procedure sectionProcedure section Data sectionData section Calculation sectionCalculation section Results sectionResults section Conclusion sectionConclusion section Preparing and submitting the reportPreparing and submitting the report The report checklistThe report checklist Oral reportingOral reporting Oral report checklistOral report checklist

11. Introduction to Engineering Technology, 7 th ed. Pond and Rankinen © 2009Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved. 11 Reporting

12. Introduction to Engineering Technology, 7 th ed. Pond and Rankinen © 2009Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved. 12 Reporting