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Electricity and Electronics Teaching Tools |
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AC BASICS EM2 |
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(As suggested for segmenting the Associate CET Competencies into 5 BASIC areas: DC; AC; Analog; Digital; and Comprehensive)
1.0 Principles of Alternating Current —————————————————- AC Circuits Challenge 1.1 Describe AC wave form characteristics 1.1.1 Effective voltage (RMS) 1.1.2 Average voltage 1.1.3 Negative Alternation 1.1.4 Positive Alternation 1.1.5 Wavelength 1.1.6 Amplitude 1.1.7 Period 1.2 Calculate peak, RMS, and average voltage values for an AC waveform 1.3 Identify the frequency terms 1.3.1 Cycle 1.3.2 Hertz 1.3.3 Phase 2.0 Electronic components and terms —————————————–———- AC Circuits Challenge 2.1 Identify capacitor types; list common usages; methods of varying capacitance 2.2 Identify inductor types and reasons for various core materials 2.3 Identify common types of transformers and list uses for each; explain why laminations are used 2.4 Indentify the following terms: 2.4.1 Charge 2.4.2 Coulomb 2.4.3 Joule 2.4.4 Reluctance 2.4.5 Capacitors 2.4.6 Inductors 2.4.7 Capacitance 2.4.8 Inductance 2.4.9 Reactance 2.4.10 Impedance 3.0 Principles of Inductance —————————————–—–——————- AC Circuits Challenge 3.1 Describe the requirements for inductance in AC electrical circuits 3.2 Explain Lenz’s law in complement with Faraday’s law of induction 3.3 Identify the differences between self-inductance and mutual inductance 3.4 Explain the factors affecting inductance 3.4.1 Number of turns of a coil 3.4.2 Coil Diameter 3.4.3 Length of the coil 3.4.4 Core material 3.5 List the factors used in calculating inductance for a single and multi-layer air core coil 3.6 Explain how inductance relates to magnetism and describe coil construction, cores and usages 3.7 Describe the differences between reactance and resistance and describe current/voltage relationships 3.8 Compare impedance with reactance and resistance and explain the causes and effects of impedance AC Basics 2 Rev 12-10-08 3.9 Describe the types of power losses associated with inductors 3.10 Calculate power consumption and requirements in inductors in AC circuits 3.11 Solve series, parallel and series-parallel problems utilizing each appropriate formula for reactance, voltage, current and power 4.0 Transformer Theory —————————————–——————–———- AC Circuits Challenge 4.1 Describe the different types of transformer construction and operation 4.2 List the various types of transformers 4.3 Determine the method for determining a step-up or step-down transformer 4.4 Describe the operation of a saturable reactor 5.0 Principles of Capacitance —————————————————–———- AC Circuits Challenge 5.1 Describe the factors affecting capacitor operation in AC circuits 5.2 Show the different purposes for capacitors and list common types and construction of the different types 5.3 Explain the advantages and disadvantages of utilizing an electrolytic capacitor in a an AC circuit 5.4 Describe the differences between capacitive reactance and resistance and describe current/voltage relationships 5.5 Solve series, parallel and series-parallel problems utilizing each appropriate formula for reactance, voltage, current and power 6.0 AC Generator Theory 6.1 Describe the components associated with an AC generator 6.2 Explain the Left-Hand rule for generators 6.3 Define Lenz’s law for induction 6.4 Explain the difference between single and three phase power generation 6.5 Describe how three phase power can be manipulated to obtain a desired voltage and number of phases 6.6 List the differences associated with Delta and Wye three phase power connections 7.0 AC Motor Theory 7.1 List different types of AC motors and methods of operation 7.2 Describe the components and principles associated with the operation of an AC motor 7.3 Describe the basic methods of using electricity to operate an induction motor and how transferred mechanical motion causes a generator to produce electrical current 7.4 Calculate the number of pole pairs needed to produce desired rpm’s 7.5 Explain the principle behind Shaded-pole and Split-phase induction motors 7.6 Describe the various methods used for starting induction motors 8.0 RC, RL and RCL Principles —————————————–———–———- AC Circuits Challenge 8.1 Explain phase relationships of voltage and current for series and parallel RL, RC and RCL circuits 8.2 Calculate power, current, impedance and voltage vectors for series and parallel RCL circuits 8.3 Explain bandwidth and selectivity for series and parallel resonant circuits 8.4 Describe the component configurations used in PI, L, and T type high and low pass filter circuits 9.0 Cabling 9.1 Describe impedance and its causes; explain reasons for maintaining a cable’s characteristics 9.2 Explain the effects of proper and improper termination 9.3 Explain the purposes of grounding and common conventions used in electrical and electronics work AC Basics 3 Rev 12-10-08 10.0 Test Equipment & Measurements —————————————–———–- Power Supply Challenge ( all activities ) 10.1 Describe how volt-ohm-current meters operate Ohmmeter Challenge 10.2 List the purposes and types of signal generators Voltmeter Challenge 10.3 Describe how oscilloscope front panel controls are used 10.4 Explain what LRC substitution equipment is and its purposes 10.5 Explain reasons for using rheostats, isolation transformers and variacs and why size matters 11.0 Basic Electrical Safety Precautions 11.1 Safe practices and standards 11.1.1 Describe personal safety precautions for working with electric and electronic devices 11.2 Electrical shock 11.2.1 Describe the human physiological reactions electrical shock causes. 11.2.2 List various degrees of current the human body can tolerate. 11.3 Emergency response 11.3.1 Explain the concept of First Aid and its particular importance to workers in electric and electronic fields 11.3.2 Explain precautions needed in the area of electronic safety 11.4 Fire Safety 11.4.1 Describe the different classes (A, B, C, & D) of fires and the type of extinguishers used to fight them. 11.5 List applicable governing fire safety regulations NEC (National Electrical Code) and NFPA 70 (National Fire Protection Association) 11.6 Explain what the NEC (National Electrical Code) and NFPA 70 (National Fire Protection Association) are, and describe various rules technicians must abide by 12.0 Mathematics and Formulas —————————————–———–———- AC Circuits Challenge ( All Activities ) 12.1 Quote Ohms law power, voltage, current and resistance formulas and solve for circuit values 12.2 List other common basic electronic formulas relative to AC End of AC BASICS Competencies Listing (with 12 major Categories) Notes: The purpose in distributing the above Competencies list is to provide a detailed syllabus for electronics educational institutions and instructors. Also to go further and explain what the student should be able to do with each of the items included in the Categories and Competencies listings.
Find An ETA Test Site: http://www.eta-i.org/testing.html
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ETCAI Products - Instructional Support for AC BASICS Competencies
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Program Title Activity Title |
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The challenge programs do not treat all competencies listed in EM2, Competencies that require a verbal or written evaluation will require other instructional materials. In general, these are competencies that use the words “describe”, “list” and in some instances “explain”. |
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November 15, 2011 |
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Suggested study texts: The 2010 Associate CET Study Guide; ISBN 1-891749-03X; ETA International; 2010; —Available through ETA at 800-288-3824, $60 Electronics; Principles and Applications,6E; ISBN 978-0078288937; Schuler; Glencoe/McGraw Hill,2002 Introduction to Electricity, Electronics, and Electromagnetics, 5E; ISBN 978-0130105738; Boylestad, Nashelsky; Prentice Hall; 2001 Mastering Technical Mathematics, 3E; ISBN 978-0071494489; Gibilisco, Crowhurst; McGraw-Hill / TAB Electronics; 2007 Electronics Principles, 7E; ISBN 978-0072975277; Malvino, Bates; McGraw-Hill Higher Education; 2007 Electronic Communications, 6E; ISBN 978-0070571570; Shrader ; McGraw-Hill Co; 1990 How to Test Almost Everything Electronic; ISBN 978-0830641277; Horn; McGraw-Hill/TAB Elec. 1993 Basic Electronics Theory With Projects & Experiments, 4E; ISBN 978-0830642007; Horn; McGraw- Hill/TAB Elec. 1993 The Soldering Handbook, 3E; ISBN 978-0871716187; Vianco; American Welding Society; 2000 Introductory DC / AC Electronics, 5E; ISBN 978-0130310859; Cook; Prentice Hall; 2002 Introduction to Electronics; ISBN 978-0534012434; Crozier; Breton Pub.; 1983 There Are No Electrons: Electronics for Earthlings; ISBN 978-0962781599; Amdahl; Clearwater Pub.;1991 Becoming An Electronics Technician, 4E; ISBN 978-0130932198; Reis; Prentice Hall; 2001 |
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This competency list and all text in the left column of this page is a publication of : ETA® International.
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ETA® International Associate C.E.T. - AC BASICS BASIC ELECTRONICS CERTIFICATION COMPETENCIES - 2009 AC Basics 1 Rev 12-10-08 |
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EM2 |
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Unchecked competency items do not mean that there is no coverage at all in the Challenge programs. An unchecked item indicates that most competency building materials must come from another source. |
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AC Power Voltage Conversions
Series and Parallel C Series and Parallel L RC Series Circuits RL Series Circuits
RL Series Circuits RC Series Circuits
Transformers
RC Series Circuits RC Parallel Circuits
RC Series Circuits RC Parallel Circuits RLC Series Circuits RLC Parallel Circuits
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