2021 BE 1251 Exam 1 Written_Version 1
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Louisiana State University *
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Mechanical Engineering
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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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pls help! write the complete solutios and legibly. UPVOTE will be given!
Answer in 4 decimal places.
Engineering Mechanics
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heck my work mode : This shows what is correct or incorrect for the work you have completed so far. It does not indicate completion.
Return to question
Required information
NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part.
The loading for a beam is as shown in the figure, where F1= 19 lb, F2= 20 lb, F3= 35 lb, F4= 2O Ib, and F5 = 15 lb.
F1
F2
F3
F4
F5
O B
6 in 8 in.-8 in. -6 in.-
Determine the reaction at A. (You must provide an answer before moving to the next part.)
The reaction at A is
76 c 8 Ib
raw
ill
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ENG
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10/6/2021
pe here to search
近
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Question *
In an engineering department, the acceptance in the civil major and the
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event the acceptance in the mechanical major. Then:
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Read each sentence carefully, and then mark as True or False. *
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Save
ck my work mode : This shows what is correct or incorrect for the work you have completed so far. It does not indicate comple
Help
Retu.
Required information
NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part.
The loading for a beam is as shown in the figure, where F1= 19 lb, F2= 20 lb, F3735 lb, F4= 20 lb, and F5 = 15 lb.
F1
F2
F3
F4
F5
-6 in 8 in.-8 in. 6 in.-
Determine the tension in cable BC.
185
X lb.
The tension in cable BC is
of 13
Next >
< Prev
3
10
ENG
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