Standard

ELC 152 – Preparatory Electricity and Electronics Training I

Course Description:

Provides students with a survey of the fundamental knowledge and skill for understanding direct current and alternating current principles and applications. Topics include: safety, measuring instruments, power supplies, electrical/electronic symbols, device identification codes, ohm’s law, scientific notation, characteristics of alternating current, and motor and generator principles.

Competency Areas:	Hours
Safety	Class	1
Measuring Instruments	D. Lab	0
Power Supplies	P. Lab/O.B.I.	9
Electrical/Electronic Symbols	Credit	4
Device Identification Codes
Ohm’s Law
Scientific Notation
Characteristic of Direct Current
Characteristics of Alternating Current
Motor and Generator Principles
Prerequisite:
Corequisite:
Course Guide

Competency	After completing this section, the student will:	Hours
		Class	D. Lab	P. Lab/ O.B.I.
SAFETY		1	0	0
General	Identify safe or unsafe working condition both at home and on the job.
Electrical	List the electrical safety rules
	Describe how electrical shock can be avoided.
MEASURING INSTRUMENTS		1	0	10
Types	Locate and identify the DC meter, multimeter, and signal generator,
Purpose	Describe the purpose of the DC meter, multimeter, and signal generator.
Use	Explain how and when the DC meter, multimeter, and signal generator should be connected in a circuit.
POWER SUPPLIES		1	0	10
Types	Identify the types of power supplies used to service electrical and electronic equipment.
Purpose	Describe the purpose of various electrical and electronic power supplies.
Use	Explain how and when various power supplies should be connected in a circuit.
ELECTRICAL/ELCTRONIC SYMBOLS		1	0	10
Components	Identify electrical components by their schematic symbols.
Schematics	Explain why schematics are used.
	Using electrical and pictorial schematics, build basic circuits.
DEVICE IDENTIFICATION CODES		1	0	10
Components color codes	Locate and identify capacitors, coils, and resistors.
Resistor values	Using a resistor color chart, determine the values of various resistors.
OHM’S LAW		1	0	10
Definition	Define Ohm’s law.
Calculate circuit values	Calculate DC voltages using Ohm’s law.
	Calculate DC current using Ohm’s law.
	Calculate circuit resistance using Ohm’s law.
SCIENTIFIC NOTATION		1	0	10
Definition	Define scientific and engineering notation
Conversion	Convert numbers from decimal form to scientific and engineering notation.
CHARACTERISTICS OF DIRECT CURRENT		1	0	10
Circuit requirement	State the requirement for a direct current.
Changing parameters	Explain how increasing and decreasing voltage, current, or resistance causes changes in direct current operating parameters.
Measure voltage	Measure voltage in a series, parallel and series-parallel direct current parameters.
Measure current	Measure current in a series, parallel and series-parallel direct current parameters.
Measure resistance	Measure resistance in a series, parallel and series-parallel direct current parameters.
CHARACTERISTICS OF ALTERNASTING CURRENT		1	0	10
Circuit requirement	State the requirement for an alternating current circuit.
Changing parameters	Explain how increasing and decreasing voltage, current, or resistance causes changes in alternating current circuit operating parameters.
Measure voltage	Measure voltage in a series, parallel and series-parallel alternating current parameters.
Measure current	Measure current in a series, parallel and series-parallel alternating current parameters.
Measure resistance	Measure resistance in a series, parallel and series-parallel alternating current parameters.
MOTOR AND GENERATOR PRINCIPLES		1	0	10
Magnetism	Describe magnetism by using magnets to demonstrate its effect.
Electromagnetism	Demonstrate the effects of the magnetic force field that surrounds a conductor using a circuit breaker, solenoid, relay, and a buzzer as practical examples.
Simple motors and generators	Explain why motors rotate using a simple motor assembly.
Motor basics	Describe how different types of DC motors and DC generator work using simple circuits.
AC motors	Describe how universal and synchronous AC motors work using simple motor circuits.

Suggested Resources

Books:

Staff of Buck Engineering Co., Inc. (1981). Fundamentals of AC/DC. Farmingdale, NJ: LAB-VOLT.

Staff of Buck Engineering Co., Inc. (1981). Motors and generators.. Farmingdale, NJ: LAB-VOLT.