LAC 28:CV.1707. Electrical Theory

A. Basic Electrical Theory: 1. define terms, units of measure; 2. electron flow; 3. producing electrical current; 4. products (effects) of electrical current. B. Ohm's Law, Kirchoff's Laws, Lenz's Law, Thevenin's And Nortons' Theorems C. Series Circuits: 1. components; 2. resistance of circuits; 3. total resistance; 4. effects of changing voltage and resistance; 5. law of proportion for series voltage divider circuits; 6. power used in circuits: a. by components; b. wasted powers. D. Parallel Circuits: 1. components; 2. differences between series and parallel circuits; 3. Ohm's Law; 4. circuits; 5. total resistance using product-sum and reciprocal methods; 6. alternate current paths; 7. currents; 8. law of proportion; 9. power requirements of components. E. Combination Circuits: 1. combination circuits; 2. components; 3. equivalent resistance; 4. alternate current paths; 5. Ohm's Law; 6. power use and dissipation. F. Characteristics of Voltages in Circuits: 1. polarity and flow of electrons; 2. distribution and voltage drops; 3. proper wire size needed to lower losses. G. Characteristics of Magnetism/Electromagnetism H. Theory of Superposition and Solving for Multiple Voltage Source Circuits I. Operation and Characteristics of Three Wire Systems J. Operation and Characteristics of Three Phase Systems: 1. identify differences between three wire single phase and three phase circuits; 2. identify differences between voltage drop and power loss. K. AC Theory: 1. terms associated with AC theory; 2. currents and voltages for components and circuits; 3. conductor size using NEC; 4. current and voltage sine waves to demonstrate phase relationship; 5. maximum, effective (rms), average, and peak-to-peak voltage and current; 6. inductance: a. factors that affect inductance; b. behavior of current when inductance is present; c. relationship between current, applied voltage, and counter electromotive force; d. inductive reactance when frequency and inductance are known; e. inductance, inductive reactance, and unknowns in various circuits; 7. capacitance: a. effects on circuits of capacitance; b. capacitance, capacitive reactance, and frequency; 8. relationships and behaviors of the following circuits: a. series RL; b. parallel RL; c. series RC; d. parallel RC; e. series LC; f. parallel LC; g. series LCR; and h. parallel LCR; 9. function, operation and characteristics of rectifiers; a. actions of full-wave and half-wave rectifiers; b. schematics; 10. series resonance, parallel resonance and circuits; 11. filters; 12. power factor; a. watts, vars and volt-amperes; b. reactive power; c. proper placement of power factor correction capacitors; d. procedure to recognize and correct poor power factor arrangements; 13. power quality issues: a. causes of poor power quality; b. the effects of harmonics; c. locating harmonics through observation and test equipment; d. techniques to reduce of eliminate effects of harmonics. L. Use of Electronics: 1. electron flow through solid-state components; 2. precautions against electrostatic discharges around semiconductor devices; 3. functions, operation and characteristics of diodes and zener diodes: a. characteristic curves; b. testing procedures; c. schematics including diodes; 4. functions, operation and characteristics of transducers: a. operation of transducers; b. schematics including transducers; 5. functions, operation and characteristics of various types of transistors (diacs, triacs, SCRs, etc.): a. operation of transistors; b. current and voltage values; c. testing procedures; d. schematics including transistors; 6. functions, operations, characteristics and circuit configurations of amplifiers: a. basic circuit configurations for various types of amplifiers; 7. functions, operations and characteristics of integrated circuits (ICs): a. schematics of and including ICs; b. information on data sheets for integrated circuits; 8. functions, operations and characteristics of three main categories of photo-operated devices; 9. digital and logic circuits: a. terms associated with digital and logic circuits; b. types of circuits; c. the operative symbols for AND, OR, NOT operations; d. the use of Boolean Algebra equations, laws, operations and theorems; e. truth tables from Boolean equations and digital switching circuits; f. gate functions and gate circuits; g. BUFFER and INVERTER amplifiers and accompanying truth tables; h. operation and characteristics of NAND and NOR logic and accompanying truth tables; i. operation and characteristics of XOR and XNOR logic and accompanying truth tables; j. positive and negative logic and its effect on gate operation; k. digital logic equivalent circuits; l. various optoelectronic devices.