hw_03 - Name(s) (up to four students per homework set):...

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Due: In class, Friday February 8, 2008 Name(s) (up to four students per homework set) : Section number(s) 1. 2. 3. 4. For instructor or TA use only: Problem Score Points 1 15 2 20 3 15 4 20 5 15 6 15 M E 345 Spring Semester, 2008 Homework Set # 3 Professor J. M. Cimbala Total: 100 1 . (15 pts) Tim takes 16 temperature measurements of boiling water with a thermister probe, as listed below: 98.3, 99.4, 97.3, 98.2, 98.6, 97.3, 99.2, 98.3, 98.4, 97.9, 98.7, 97.4, 99.0, 99.1, 98.1, and 96.8 o C Tim later finds out from more accurate equipment that the “true” temperature is 98.0 o C. ( a ) Calculate the mean, sample standard deviation, and bias error of Tim’s thermistor probe measurements. Write how Tim should report his measured temperature T in standard engineering form. ( b ) Can any of his measurements be considered outliers , based on standard 95% confidence? ( c ) After removing any outliers, how should Tim report his final measured temperature in standard form? 2 . (20 pts) Later on in the semester, we will study thermocouples . It turns out that thermocouple output is not exactly linear. In this problem, the linearity of a type K thermocouple will be examined. Suppose you are designing a temperature measurement system that will have a range of -50 to 200 o C. To keep the cost down, you plan to use a type K thermocouple, with the temperature output display determined by a simple linear (straight line) fit. ( a
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This note was uploaded on 07/23/2008 for the course ME 345 taught by Professor Staff during the Spring '08 term at Pennsylvania State University, University Park.

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hw_03 - Name(s) (up to four students per homework set):...

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