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lab3 - Figure… was measured using a force dial An...

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Introduction The purpose of this lab was to inspect and explore an electromagnetic relay. Also, to learn about concepts such as: steady state value, time constant, electromechanical system and other concepts that will be fully examined in other courses. In addition, to do measurements and obtain experimental data in currents, resistance and flux density and their relation with force. Finally, to use statistical analysis techniques in order to compare data experimented with theoretical data obtained from formulas and equations. Lab Procedure Part A In the beginning of the lab, it was required to look for PIN numbers in order to fill them in Figure … Then, a coil was connected from the “Output 1” of the Dual Output DC Power Supply to the relay’s pin without disassembling the relay. A motor was connected in series with “Output 2” along the normally open pin. The motor was tested to find out whether it was working or not. After disassembling the relay, the force needed to push the moveable contact H from J to M in
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Unformatted text preview: Figure… was measured using a force dial. An Ohmmeter was connected to the normally open pins and the force was measured 5 times when the Ohmmeter gives a reasonable reading. The length of bar E and the gap between …. Was measured using a caliber in order to find out the displacement of bar E along the centerline. Using the value of the displacement and the mean of the forces, the equivalent stiffness was calculated. The values of the voltage at which the relay closes and opens were recorded 5 times for each by increasing and decreasing the voltage across the relay until it opens and closes. Part B For part B of the lab, a GaussMeter’s probe was calibrated and then was put in relay’s gap in order to measure the magnetic flux density of the relay. The values of the flux density was recorded at voltage values of 5,10 and 15V....
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