Maricopa Community Colleges  TDR122   19886-20086 
Official Course Description: MCCCD Approval: 03/11/86
TDR122 19886-20086 LEC 5 Credit(s) 5 Period(s)
Basic Electrical Theory
Introduction to electrical theory, direct current (DC) circuits, series, parallel, and series-parallel circuits, DC power sources, DC motors, DC generators.
Prerequisites: TDR100 or permission of Instructor.
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MCCCD Official Course Competencies:
 
TDR122   19886-20086 Basic Electrical Theory
1. Describe the basic units of measurement in electrical theory. (I)
2. Define direct electric current and describe the current flow. (I)
3. Solve problems which involve the use of Ohm's Law. (I)
4. Solve problems which involve calculating resistance values. (I)
5. Solve resistance and conductance problems and explain how they relate to DC. (I)
6. Solve problems involving series, parallel and series-parallel circuits for DC circuits. (I)
7. Describe the effects of currents as they relate to fuses and thermostats. (I)
8. Using diagrams, describe the effects of magnetism and electricity at work. (I)
9. List the types of power sources and describe their operations. (II)
10. List the types of motors and controllers used with DC applications and describe their functions and power sources. (IV)
11. Describe the principle components of DC generators, their function and relationship to the subcomponents of the generators. (III)
12. Describe the difference between a DC generator and a DC motor. (III, IV)
13. Describe the controller devices used in the DC motor, what they are used for, and the safety precautions to be used in handling control devices. (IV)
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MCCCD Official Course Outline:
 
TDR122   19886-20086 Basic Electrical Theory
    I. Basic Electrical Theory - DC Voltage
        A. Producing Electricity
          1. Atomic Theory
          2. Electrical Charges
          3. Electron Theory
          4. Current and Voltage
          5. Magnetism and Electromagnetism
        B. DC Circuits
          1. Direct Current
          2. Resistors
          3. Ohm's Law
          4. Power
          5. Series, Parallel, and Series-Parallel Circuits
      II. Power Sources
          A. Primary Cells
          B. Batteries, Photo, Thermo, Solar Cells
        III. DC Generators
            A. Principles of Operation
            B. Major Components
            C. Types of DC Generators
              1. Separately Excited
              2. Series
              3. Shunt
              4. Compound
                a. Overcompound
                b. Flat Compound
                c. Undercompound
              5. Third Brush
              6. Three Wires
            D. Control of DC Generators
          IV. DC Motors
              A. Principles of Operation
              B. Types of Motors
                1. Series
                2. Shunt
                3. Compound
                  a. Differential
                  b. Cumulative
              C. Controllers
                1. Manual
                2. Semimagnetic
                3. Full Magnetic
                4. Faceplate
                5. Drum
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