Automotive diagnosis & systems repair
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Procedure: Series Circuit Construction & Testing with the S.E.T. Board.1 NATEF Task Area: A6
Competency Rubric: [ ] 1=exposure [ ] 2=applies essentials [ ] 3=needs practice [ ] 4=satisfactory [ ] 5=mastery
References: Textbook Chapters: xxx, Instructor Demo
Measuring Series Circuit 2 Names Maximum_________________________
Date______________
Concepts: Resistance, Voltage Available, Voltage Drop, Series Circuit Current
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Directions: 1. Build the series circuit pictured at the left on the Project Board
Instructor Check [ ] 2. Have the instructor approve the build.
& conversation
3. Begin by making an un-powered resistance test of the loads
(bulb, resistor, diode, motor).
Bulb #1: _____Ω Bulb #2: _____ Ω
4. Power up the Electrical Project Board. Determine the OCV (open
circuit voltage or source voltage).
Open Circuit voltage: _____ V
5. Determine the voltage available to each of the loads (consumers).
Voltage Available to Bulb #1: _____ V
Voltage Available to Bulb #2: _____ V
Instructor Check [ ] 6. Determine the voltage drops at each of the loads, the switch, and
& conversation the ground wire. Record your results. Add up the voltage drops
to determine total VD for the circuit and record the total VD.
Voltage Drop of Bulb #1: _____ V
Voltage Drop of Bulb #2: _____ V
Voltage Drop of Ground Wire: _____ V
Voltage Drop of Switch: _____ V
Total Circuit Voltage Drop: _____ V
Instructor Check [ ] 7. Switch the leads & the meter to measure amperage (current).
& conversation Remove the fuse. Measure the current with the meter in series.
Circuit Current: _____ mA _____ A
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