La. Admin. Code tit. 28 § CV-1707

Current through Register Vol. 50, No. 11, November 20, 2024

Section 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.

La. Admin. Code tit. 28, § CV-1707

Promulgated by the Department of Education, Board of Elementary and Secondary Education, Trade and Industrial Education, LR 32:575 (April 2006).

AUTHORITY NOTE: Promulgated in accordance with R.S. 17:6(A)(10) and R.S. 17:10.