plugin-2011 W 314 HW 3 explanation

plugin-2011 W 314 HW 3 explanation - EECS 314 Winter 2011...

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Unformatted text preview: EECS 314 Winter 2011 HW 3 Explanations In Problem 2 parts 2 and 3, you work on the calibration curve, sketched here: The goal of Part 2 is to derive the coefficient for the middle (linear) part of the curve. This coefficient depends on the parameters of your device such as the cross‐section area of the tank S, the length of the potentiometer L, the source voltage Vs; you may also need such parameters as the position LTAP of the potentiometer’s tap, the height H of the liquid level corresponding to the middle position of the tap, etc. The error ΔP of the measurement of the volume can be found (in Part 3) from the slope of the curve, or algebraically, from the coefficient K derived in Part 2. In Problems 3 and 4 you work on the calibration curves, sketched below: After you printed your computer‐generated plots, determine the errors of temperature measurements from their slopes. Hand‐drawn lines as on the sketches here are ok. For the S‐shaped plot shown on the right sketch, determine three error values: two at the ends, and the minimal error in the middle part of the curve (see the unlabeled pairs of arrows on the right sketch); include them all in your solution. Remember that the size of error is itself an approximate value: you do not need more than 2 significant digits (that is, a value such as 2.5 ˚C is accurate enough). © 2011 Alexander Ganago Last printed 1/25/11 1:36 PM Page 1 of 1 File: 2011 W 314 HW 3 explanation.doc ...
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