2021 BE 1251 Exam 1 Written_Version 1

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Louisiana State University *

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Course

1251

Subject

Mechanical Engineering

Date

Apr 3, 2024

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docx

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Uploaded by CountJackalMaster28 on coursehero.com

2021 BE 1251 Exam 1 Version 1 Name ______________________ Type in your name above, and your short answers in the spaces provided below. When finished, save as a PDF (.pdf) and upload to Moodle in the 10/25 to 10/29 section. 5 points each for 35 total points. 1) What is engineering? Please define engineering stating the three main points or focuses of engineers. 2) What are any two of the five cornerstones of personal ethical behavior? 3) A House of Quality is used to relate the importance of engineering characteristics of a design to the: a. Supervisor Ideas b. Quantitative Attributes c. Gantt Chart d. Customer Attributes 4) Which phase of the Engineering Design Method would include looking up information through patents, the internet, or trade journals? 5) _____________ in use accommodates a wide range of individual preferences and abilities as one of the Seven Principles of University Design Excel Practical Problem: 6-7) Download the file “2021ExamSensorDataset.xlsx” from Moodle, which includes voltage data from two sensors detecting an analyte’s concentration. For the first 7 seconds of each trial, there was no analyte introduced; what are the average and standard deviations of sensor voltage over the time were analyte was detected? Sensor A B Average Voltage (mV) Standard Deviation (mV) Next, create a plot showing the relationship between all time points of sensor output and analyte concentration, being sure to label your chart and axes. Include the multiple data points for zero analyte concentration in your plot. Add trendlines for both sensor A and B, and show the equations and R- squared values with appropriate significant figures so that they are clearly visible. Paste the chart below in this Word document. Which sensor has a response that is more linear with concentration? How did you determine this? More linear sensor: ______ This can be concluded by: For Sensor A, what will the voltage be at 30 ppm concentration? (Paste your chart below.)

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