ExamISpring2008 - ORIE 3120 Student Name:_ Exam I...

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ORIE 3120 Student Name:________________________________ Exam I 1 Industrial Data and Systems Analysis, ORIE 3120 Exam I February 28, 2008 Closed Book / Closed Notes Scientific calculator permitted; using any device to access information you are expected to memorize would be a violation of academic integrity. Point value of questions is proportional to the estimated time requirement. (1 point 1 minute.) Points possible: 80 Time allowed 105 minutes. Write your name on every page. (The exam paper will be unstapled and distributed for grading.) Answer all questions in the space provided. Use the back of the page if necessary but do not answer on a different page unless the exam proctor provides it. Make sure each additional page contains your name. Hand in a complete exam. Academic integrity is expected of all students of Cornell University, whether in the presence or absence of members of the faculty. Understanding this, I declare I shall not give, use, or receive unauthorized aid in this examination. Signature of Student:_________________________________________________
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ORIE 3120 Student Name:________________________________ Exam I 2 1. Functional Modeling (15 minutes) Metacafe.com has an interesting video entitled “How to Make an Amazing Glowing Ice Bulb.” The first step is to take an LED (Light Emitting Diode), two wires, and electrical tape and attach the wires to the LED . The output of this step is called the LED assembly. The next step is to take this assembly and a balloon and stuff the LED into the balloon . The output of this step is called the balloon assembly. The third step is to take tap water and fill the balloon with water and tie a knot in the balloon. The output of this step is called the water-filled balloon assembly. The fourth step is to put this water-filled balloon assembly into the freezer (a resource) and freeze it. The water temperature would form a feedback loop in this step. The output of this step is called an ice-filled balloon assembly. The fifth step is to remove the balloon rubber . The video says “Hot water helps” in this step so hot water may be considered to be a useful resource. It would also be valid to think of it as an input, since it supplies energy. The output of this step is the ice bulb. The last step is to take the ice bulb and batteries and to attach the batteries and behold the magic! The output of this last step is an amazing glowing ice bulb. Apart from the temperature feedback control, it does not appear as if this process has any noteworthy decisions or constraints.
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ExamISpring2008 - ORIE 3120 Student Name:_ Exam I...

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