Standard
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ELT 119 – Electricity Principles II
Introduces the
theory and application of varying sine wave voltages and current. Topics
include: magnetism, AC wave generation, AC test equipment, inductance,
capacitance, and basic transformers.
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Competency Areas: |
Hours: |
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Magnetism |
Class |
3 |
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AC Wave Generation |
D. Lab |
2 |
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AC Test Equipment |
P. Lab/O.B.I. |
0 |
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Inductance |
Credit |
4 |
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Capacitance |
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Basic Transformers |
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Prerequisite:
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IFC 100 |
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Corequisite: |
IFC 101, MAT 101 |
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Course Guide
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Competency |
After completing this section, the student will: |
Hours |
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Class |
D. Lab
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P. Lab/
O.B.I. |
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MAGNETISM |
2 |
1
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0 |
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Magnetism |
Explain the principles of magnetism. |
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Demonstrate magnetic principle application. |
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2 |
1
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0 |
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Sine wave |
Describe sine waves generated by alternating current. |
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Alternating current |
Define alternating current. |
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Voltage and current values |
Measure AC voltage and current values. |
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Alternating voltage generator |
Describe basic AC generator principles. |
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AC TEST EQUIPMENT
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6 |
4
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0 |
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Oscilloscope use |
Explain oscilloscope control functions. |
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Frequency and period |
Calculate and measure AC sine wave frequency and period. |
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Use an oscilloscope for sinusoidal wave form voltage,
period, and/or frequency measurements. |
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Harmonics |
Measure harmonics using a harmonic meter
or analyzer. |
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INDUCTANCE
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8 |
6
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0 |
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Inductors |
Define inductance and identify inductor symbols. |
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Explain inductor operation. |
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Demonstrate the effect of connecting inductors in series
and in parallel. |
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Draw a vector diagram showing inductor's phase
relationships of voltage and current. |
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Determine the inductance value of an inductor. |
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Define and determine the reactance of an inductor when
given the inductance and the frequency. |
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CAPACITANCE
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6 |
4
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0 |
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Capacitors |
Define capacitance and identify capacitor symbols. |
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Explain capacitor operation. |
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Demonstrate the effect of connecting capacitors in series
and in parallel. |
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Draw a vector diagram showing voltage and current phase
relationships. |
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Determine the capacitance value of a capacitor. |
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Define and determine the reactance of a capacitor when
given the capacitance and frequency. |
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BASIC TRANSFORMERS |
6 |
4
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0 |
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Terminology |
Apply, define, and explain fundamental electrical
terminology and electrical parameters for transformers. |
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Mutual inductance |
Explain transformer outputs in relation to inputs. |
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Core losses |
Explain core losses, mutual inductance, and types of
transformers. |
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Impedance |
Use an oscilloscope for transformer voltage and phase
measurements. |
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Multiple-winding transformers |
Calculate voltage-turns ratio. |
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Calculate voltage-current ratio. |
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Determine impedance matching. |
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Types of transformers |
Test and identify transformers. |
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Describe the impact of harmonics on transformers, heating
core losses, hysteresis, and copper loss (skin effects). |
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Suggested Resources
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Books:
Floyd,
Thomas L.; Electric Circuits Fundamentals, Prentice Hall Publishers ISBN 0-13-016394-55
Hart; Ugly’s Electrical References, Burleson Distribution Corp.
Herman; Delmar’s Standard Textbook of Electricity (2nd
ed.),
Delmar Publishers ISBN 0-8273-8550-1
Herman; Experiments in Electricity for use with
Lab-Volt
Mazur/Glen;
Digital Multimeter Principles 92nd
ed.) American
Technical Publishers ISBN 1498-5
Mazur/Glen;
Digital Multimeter Principles Workbook
(2nd ed.),
American Technical
Publishers ISBN 1484-5
NEC 2002 Code, NFPA, Delmar Publishers ISBN 0-8776-5460-3