Lab Project 2a-1

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Tarrant County College, Fort Worth *

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1314

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Electrical Engineering

Date

Dec 6, 2023

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docx

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AERM 1314 Name ________________________ Basic Electricity Lab Project 2a Level: 3 Objective: a. Basic Electricity 3. Measure voltage, current, resistance, and continuity Required:  Instructor handout  Assigned textbook  Scientific Calculator  Standard ruled notebook paper  Appropriate writing instrument  Multimeter Procedure: The student will measure voltage, current, resistance, and continuity:  Student will measure current, resistance and continuity  Student will construct and operate a series and parallel circuit  Student will explain factors affecting wire resistance  Student will determine aircraft wiring requirements  Student will determine minimum wire size using acceptable data Standard: Demonstrate sufficient manipulative skills to simulate return to service. Procedures: Answer the following questions and perform multimeter operations 1. What are the two basic categories of multimeters? Digital and Analog 1.5.3 Lab Project 2: AERM 1314 Page 1

AERM 1314 Name ________________________ Basic Electricity 2. Label the multimeter parts. 3. Label the parts on the multimeter probe below. Plug 4. What symbols may be used on a multimeter to indicate the following functions?  Amperage AC 1.5.3 Lab Project 2: AERM 1314 Page 2 1.____ Knob _______ 2._ common/ground socket ___________ 3. Voltage/resistance _______________ 4._ 200 Milliamps Socket ____________ 5._ Current Socket ___ 6._ Screen _________ Probe Lead Tip

AERM 1314 Name ________________________ Basic Electricity  Amperate DC  Voltage AC  Voltage DC  Resistance  Continuity Check  Diode Check 5. Which category of multimeters has moving parts? The Knob 6. Describe the basis of operation for an analog multimeter. interaction of two magnetic fields 7. All Multimeters are capable of measuring what three basic electrical characteristics? Voltage, Amps and Continuity 8. Name three disadvantages of an analog multimeter? Is capable of making an infinite number of readings, Prone to interpretation errors, Requires effort and concentration in order to make and interpret readings. 9. Label the analog multimeter movement parts. 1.5.3 Lab Project 2: AERM 1314 Page 3

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AERM 1314 Name ________________________ Basic Electricity 10. Name two types of multimeter calibrations. calibrate the pointer in order to make accurate measurements. 11. What type of calibration is performed annually? Calibrating the pointer 12. Which type of calibration is performed prior to using? The pointer 13. Describe the steps for performing a Field Calibration on a digital multimeter. They are to perform practice on each others tips to see if there is a reading or not. 14. What are two advantages of a digital multimeter? Easy operation and No flaw of errors. 15. Analog multimeters have an ______ Infinite ____ number of possible readings, while a digital multimeter has a ______ Specific ______number of possible readings. 16. A multimeter will not measure what electrical characteristic? Current 17. Which type of measurement is made with power removed from the circuit? Resistance 18. Which type of measurement is considered to be the safest? 19. Which type of measurement is the easiest to perform? Voltage 1.5.3 Lab Project 2: AERM 1314 Page 4 Permanent Magnet Moving Coil Moving Coil Springs Pointer Scale

AERM 1314 Name ________________________ Basic Electricity 20. Provide the following specifications for your multimeter:  Make/Model ______ AMPROBE AM-510 _______________  Max AC Voltage ______ 600V ___________________________  Maximum DC Voltage _____ 600V ____________________________  Minimum AC Voltage ______ 10V ___________________________  Minimum DC Voltage _______ 10V __________________________  Maximum AC current ___________ 10 _________________________  Maximum DC current ___________ 10 _________________________  Minimum AC current _________ 8 ____________________________  Minimum DC current _________ 8 ____________________________  Capacitance Range _________ 40nF _________________________  Frequency Range __________ 45-400 FH ___________________  Category Rating __________ Cat 3 600 V __________________  Accuracy and Resolution _________ 1.0 %________________________ 21. How many multimeter leads sockets/plugs are there on your multimeter? 4 total. 22. What is the maximum amount of current that can be applied to each of the two different current jacks on your multimeter? 400 Miliamps and 10 Amps 23. Prior to making resistance measurements in an electrical circuit, the power should be turned ___ off ______. 1.5.3 Lab Project 2: AERM 1314 Page 5

AERM 1314 Name ________________________ Basic Electricity 24. If the multimeter red lead is connected to the negative terminal on a battery and negative lead is connected to the positive terminal, the multimeter will read a negative or positive voltage? It will read negative to let you know that something isn’t right. 25. What electrical components would you perform a continuity check on? A circuit board. 26. What is the source of power/current when making resistance measurements? The battery or the multimeters 27. If you are not sure of the value you are measuring, what setting/range should you start with? Depending on what your measuring, start somewhere big, near the measurement it’s supposed to be. 28. List the steps for properly setting up your multimeter for measuring AC. Depending on what electrical characteristic your measuring, you turn the knob to that position, but since were measuring AC, go the squiggly line. 29. Describe how current is measured in a circuit when using a multimeter. Go to amperage and set it to low for a accurate measurement for just in case. 30. Describe how voltage is measured in a circuit when using a multimeter. Turn the knob to V, and depending on what AC or DC, you use the tips of the needles to touch the ends of whatever your getting voltage from. 31. Describe how resistance is measured in a circuit when using a multimeter. For this, Power needs to be turned off, then like the last process with Voltage, touch the ends of whatever your measuring of resistance. 32. Using the analog multimeter scale below, provide the following readings: 1.5.3 Lab Project 2: AERM 1314 Page 6

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AERM 1314 Name ________________________ Basic Electricity Resistance ____ 25 _________ DC Volts (500V scale)____ 25 _________ AC Amps (1 amp scale) ____ 4.25 _________ 33. Illustrate/draw how to correctly connect and measure the voltage drop across R5 in circuit below. 34. Illustrate/draw how to correctly connect and measure the current flowing in circuit below. 1.5.3 Lab Project 2: AERM 1314 Page 7

AERM 1314 Name ________________________ Basic Electricity 35. Illustrate/draw how to correctly connect and measure the resistance of R5 in circuit below. 36. Illustrate/draw how to correctly connect and measure the total current flowing in the circuit below. 37. Illustrate/draw how to correctly connect and measure the voltage drop across R2 in circuit below. 1.5.3 Lab Project 2: AERM 1314 Page 8

AERM 1314 Name ________________________ Basic Electricity 38. Illustrate/draw how to correctly connect and measure the current flowing thru R2 in circuit below. 39. Illustrate/draw how to correctly connect and measure the total resistance in circuit below. 1.5.3 Lab Project 2: AERM 1314 Page 9

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