HW - Chap 3 - Fall 09

# HW - Chap 3 - Fall 09 - MFET 474 Manufacturing Integration...

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MFET 474, Homework page 1 of 4 MFET 474 Manufacturing Integration II Homework #2 Fall 2009 Name (Last, First) _______________________________________________________________ Read Chapter 3 in your text book “Measurement and Control Basics” and then answer the following questions. 1) A circular wire (conductor) has a diameter of 0.006 inches. How many mils is this diameter? 2) Fill in the blank: The “circular mil” is the standard unit of __________________________________ for wired used in the US wire-sizing tables. 3) What is the area in circular mils of a conductor (i.e., circular wire) with a diameter of 0.006 inches? 4) What is the resistance of a 610 meter length of copper (drawn) wire that has a diameter of 0.150 inches if we assume the wire is at 20 degrees C? Please show all of your work and state your answer using 2 decimal places. NOTE: Perform all calculations to 2 decimal places. 5) In general, does the resistance of a given piece of copper wire increase or decrease as the temperature increases? (a) Decrease (b) Increase 6) Using table 3-2, determine the resistance of 3200 feet of 18 AWG copper wire. Assume the wire temperature is 25 Degrees C. State your answer to 2 decimal places.

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