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Working Safely with Electricity

Course #: 4400
Duration: 10 hours (includes 1 test)
Course Objectives:

  • Electrician Categories and Classifications
  • Electrical Safety Standards and Codes, including OSHA, NEC, and NESC
  • Materials Standards
  • Listing and Labeling by Testing Laboratories
  • Electric Shock
  • Safety Precautions
  • First Aid for Electric Shock
  • Protective Clothing

DC Principles

Course #: Block A21
Duration: 30 hours (includes 6 tests)
Prerequisites:

  • Basic Industrial Math (Block X21)

What Students Learn:

In this block consisting of six study units, the trainee will learn the basics of electrical theory. These units introduce electrical terms, symbols, and the operation of simple circuits. Ohm’s law receives extensive coverage including practical troubleshooting examples used to industry. A new unit specific to capacitors and inductors provides more in-depth coverage. Up-to-date information on conductors, insulation, and specialty batteries forms a revised study unit. Study units covering magnetism, electromagnetism, motors, and generators are included with industry related examples.

Special Notes:
  • This updated course replaces DC Principles, Block A01. Each study unit contains a progress exam.
Components:
  • 086096 Nature of Electricity
  • 086002 Circuit Analysis and Ohm’s Law
  • 086003 Capacitors and Inductors
  • 086004 Magnetism and Electromagnetism
  • 086005 Conductors, Insulators, and Batteries
  • 086006 DC Motors and Generator Theory

Circuit Analysis and Ohm's Law

Course #: 086002
Course Objectives:

  • Find the total resistance in series, parallel, and series-parallel circuits.
  • Use Ohm’s law to calculate the current, voltage, or resistance in circuits.
  • Calculate the amount of power supplied and dissipated in a DC circuit.
  • List the steps for finding current, voltage, and resistance with a digital or analog meter.

Capacitors and Inductors

Course #: 086003
Course Objectives:

  • Explain how a capacitor holds a charge.
  • Describe common types of capacitors.
  • Identify common capacitor ratings.
  • Calculate the total capacitance of a circuit containing capacitors in series or in parallel.
  • Calculate the time constant of a resistance-capacitance or RC circuit.
  • Explain how inductors are constructed.
  • Describe the system used to rate inductors.
  • Describe how an inductor regulates the flow of current in a DC circuit.
  • Calculate the total inductance of series or parallel connected inductors.
  • Calculate the time constant for a resistance-inductance or RL circuit.

Magnetism and Electromagnetism

Course #: 086004
Course Objectives:

  • Identify the north and south poles of permanent magnets and electromagnets.
  • Name magnetic and nonmagnetic materials.
  • Describe how to magnetize a piece of steel by induction.
  • Explain the difference between simple, compound, and closed magnetic circuits.
  • Locate the direction of magnetic lines of force around a conductor (if the direction of current is known).
  • Use the right-hand rule to locate the poles of a solenoid.
  • Describe the operation of simple electromagnetic relays, buzzers, and stepping switches.
  • Explain how a DC motor operates.
  • Give a simplified explanation for generator action and motor action with electromagnetic induction.

Conductors, Insulators, and Batteries

Course #: 086005
Course Objectives:

  • Describe the various types of conductors and discuss their conductivity.
  • Explain the American Wire Gage System of sizing copper conductors.
  • Determine the size of conductor needed for an application.
  • Identify the various types of insulating materials and their temperature ratings.
  • Explain the difference between a dry cell and a storage battery.
  • How to connect cells together to obtain more voltage, more current, or more of both voltage and current.
  • Describe the proper safety precautions used when working with storage batteries.
  • Describe how to properly clean and care for storage batteries.
  • Discuss the instruments used for testing storage batteries.
  • Explain how NiCad, lithium, and other types of special batteries operate, and describe their ratings.

DC Motors and Generator Theory

Course #: 086006
Course Objectives:

  • Identify a series-, shunt-, and compound-wound motor and discuss their application.
  • Explain how a permanent-magnet and stepper motor operate.
  • List the steps to reversing a DC motor’s direction.
  • Discuss how the speed of a DC motor can be controlled.
  • Explain the basic principle for generating a direct current.
  • Name the factors that affect the strength of the induced voltage.
  • Describe the purpose of a commutator and brush assembly.
  • Discuss the difference between the field connections of series-, shunt-, and compound-wound machines.
  • Give the reason for shifting brushes.
  • Discuss the use of commutating poles and compensating windings for better generator operation.
  • List the various types of machine losses.

Nature of Electricity

Course #: 086096
Course Objectives:

  • Explain the operation of a simple circuit.
  • Define the terms: conductor, insulator, and resistor.
  • Demonstrate that unlike charges attract and like charges repel.
  • List the dangers and benefits of static electricity.
  • Define the terms: volt, ampere, and ohm.
  • Describe common notations and prefixes used to identify electrical and electronic values.
  • Identify carbon resistors, potentiometers, and rheostats, and explain how they work.
  • Identify the common electrical symbols used in schematic diagrams.
  • Explain the difference between a series and parallel circuit.

Nature of Electricity

Course #: 086096

Electronics Workbench®

Course #: 086800
Prerequisites:

  • DC Principles (Block A21)

What Students Learn:

Electronics Workbench is an electronics lab in a computer. A powerful software tool that simulates the behavior of analog circuits, digital circuits, and the corresponding test equipment. Students perform experiments faster, in a safe, user friendly environment. Sophisticated troubleshooting options allow trainees to make practical evaluations of the theory they have been learning. High-quality, visual circuit paths are recreated. The simulator lets students design, build, and verify circuits significantly faster than on a real test bench. As self-paced study, students can experiment with "what if" scenarios. Circuits can be created with any number of faults or malfunctions for students to diagnose, isolate, and repair.

Realistic test instruments used in working applications include the digital multimeter, oscilloscope, function generator, word generator, logic analyzer, logic converter, and bode plotter. A "bottomless" bin of real world components for both digital and analog circuits include over 125 74xx and 74xxx chips, resistors, diodes, capacitors, a wide variety of logic gates, scrs’, triacs, npn, and pnp transistors and many more.

Experiments with Basic DC Theory ­ Lab Manual

Course #: 086087
Duration: 10 hours (includes 1 test)
Prerequisites:

  • DC Principles (Block A21)
  • Electronics Simulation Software (086800)

What Students Learn:

Basic lab exercises and elementary troubleshooting problems using the Electronics Simulation Software are contained in this manual. Practice exercises using electrical notations, prefixes, Ohm’s law, series and parallel connections, and basic circuit construction are included. The manual includes the basic operational instructions for the software.

AC Principles

Course #: Block A22
Duration: 40 hours (includes 8 tests)
Prerequisites:

  • Basic Industrial Math (Block X21)
  • DC Principles (Block A21)

What Students Learn:

Alternating current is the form of current most often used to furnish electrical energy. Students receive a complete introduction to AC terminology and basic AC circuit configurations. Individual study units on the uses of capacitors and inductors in AC circuits underlines the importance of these components in AC theory. The generation, control, and distribution of AC power are highlighted in study units on alternators, transformers, and energy distribution. How electricity is generated at a power plant and sent to consumers is covered. The student will also be introduced to basic electronics through a study unit on rectification and basic electronic components.

Special Notes:
  • This updated course replaces AC Principles and Components, Block A02. Each study unit contains a progress exam.
Components:
  • 086007 Alternating Current
  • 086008 Alternating Current Circuits
  • 086009 Inductors in AC Circuits
  • 086010 Capacitors in AC Circuits
  • 086011 Transformers
  • 086012 Alternators
  • 086013 Electrical Energy Distribution
  • 086014 Rectification and Basic Electronic Devices

Alternating Current

Course #: 086007
Course Objectives:

  • Draw a graph of an AC voltage and describe how AC voltage is created.
  • Explain AC cycle terms: "alternation," "peak," "positive," and "negative."
  • Define the time period of an AC voltage as expressed in degrees.
  • List the characteristic values of an AC cycle and describe the relationship between the values.
  • Define phase angle and describe how it relates to reactive circuits.
  • Calculate power for single-phase and three-phase circuits.
  • Describe how a 220 VAC single-phase circuit operates.
  • Illustrate the phase relationship of three-phase wave forms.
  • Determine real power by reading a power factor meter.
  • Describe delta and wye three-phase circuit connections.

Alternating Current Circuits

Course #: 086008
Course Objectives:

  • Identify electric circuits in terms of their circuit characteristics.
  • List several circuit characteristics that are used to describe a circuit for a particular load application.
  • Connect electrical components in series and parallel circuits.
  • Control loads from one or two switch points.
  • Describe how delta- and wye-connected three phase circuits are different.
  • Explain how grounding a circuit increases its safety.
  • Recognize the difference between control circuits and power circuits.

Inductors in AC Circuits

Course #: 086009
Course Objectives:

  • Explain how an inductor is made and how it operates in a DC and AC circuit.
  • Describe inductive reactance and impedance, and how AC frequency effects inductance.
  • Use Ohm’s law in an AC circuit that includes an inductor.
  • Calculate the impedance of a series RL circuit.
  • Calculate the impedance of a parallel RL circuit.

Capacitors in AC Circuits

Course #: 086010
Course Objectives:

  • Describe how a capacitor stores a charge and how series connected and parallel connected capacitance values are calculated.
  • Discuss capacitive reactance and use Ohm’s Law in AC circuits that contain a capacitor.
  • Calculate the impedance of a series RC circuit.
  • Explain how changing the frequency of an AC signal changes capacitive reactance.

Transformers

Course #: 086011
Course Objectives:

  • Explain what the main components of a transformer are.
  • Tell how mutual inductance makes it possible to change an AC voltage from one value to another when using a transformer.
  • Determine the turns ratio of a transformer when the primary and secondary voltages are known.
  • Calculate primary or secondary voltages or current when either one of these and the turns ratio are known.
  • Explain why transformers are laminated.
  • Connect three single-phase transformers for three-phase operation.
  • Calculate line current (if phase current is known) in delta-connected transformers.
  • Explain the operating principles of an auto transformer.

Alternators

Course #: 086012
Course Objectives:

  • Explain how single- and three-phase alternators operate.
  • List and describe the major components of an alternator.
  • Discuss alternator ratings in terms of power, voltage, speed, and temperature.
  • State the steps required for starting, stopping, and operating alternators.
  • Describe the similarities and differences of the three main types of alternators.

Electrical Energy Distribution

Course #: 086013
Course Objectives:

  • Explain the difference between feeder and branch circuits.
  • Describe the different types of systems available for distributing power within a plant.
  • Recognize and identify utilization equipment.
  • Discuss the use of transformers in energy distribution.
  • Identify by name and describe the uses of various types of raceways.
  • Distinguish between panel boards and switchboards.
  • Describe the electrical system of a power utility.
  • Describe how electricity is generated at a power station or utility.

Rectification and Basic Electronic Devices

Course #: 086014
Course Objectives:

  • Explain how diodes are used as rectifiers.
  • Discuss the basic operation of a diode and a triode electron tube.
  • Connect a PN junction for forward and reverse bias.
  • Explain how a transistor operates as an amplifier.
  • Recognize transistor input and output circuits.
  • Compare rectifier circuits with and without filter circuits.
  • Describe the operation of an SCR and a triac.
  • Calculate the ripple frequency of a half-wave and full-wave single- phase and three-phase rectifier.

Experiments with Basic AC Theory ­ Lab Manual

Course #: 086088
Duration: 10 hours (includes 1 test)
Prerequisites:

  • DC Principles (Block A21)
  • AC Principles (Block A22)
  • Electronics Simulation Software (086800)

What Students Learn:

This lab manual, designed for use with the electronics simulation software, contains lab exercises and troubleshooting problems that reinforce the theory learned in AC Principles. Problems dealing with impedances of RC and RL circuits, rectification of AC voltages, and series and parallel resonant circuits are part of the learning experience. The manual contains the basic operational instructions for the software.

Analog Circuit Measurement

Course #: Block A23
Duration: 15 hours (includes 3 tests)
Prerequisites:

  • Basic Industrial Math (Block X21)
  • AC Principles (Block A22)

What Students Learn:

In this three unit block, trainees learn how to use electrical test instruments and measuring techniques. The instruments covered are multimeters, volt-ohm-milliammeters (VOMs) and oscilloscopes. Students will learn how to measure voltage, resistance, and current valves is a circuit. Troubleshooting tests on both AC and DC systems including PLC input and output problems are emphasized.

Special Notes:
  • This updated course replaces Electrical Measurements and Instruments, Block A03. Each study unit contains a progress exam.
Components:
  • 086025 Basic Test Equipment
  • 086026 Troubleshooting with Volt-Ohm-Milliamp Meters (VOMs)
  • 086027 Using Basic Oscilloscopes

Basic Test Equipment

Course #: 086025
Course Objectives:

  • How to use the multimeter (also known as a volt-ohm-milliammeter or VOM).
  • Define the terms voltage, current and resistance, and explain their relationship in a circuit.
  • Discuss how voltage, current and resistance is measured with a multimeter.
  • Identify the schematic symbols used to represent various reactive devices.
  • Describe the major features of analog and digital VOMs.
  • Explain how to use both analog and digital VOMs to measure voltage, resistance and current in a circuit.
  • Learn about the special probes used with a digital VOM.
  • Discuss the important safety precautions you must take when using a multimeter.

Troubleshooting with Volt-Ohm-Milliamp Meters (VOMs)

Course #: 086026
Course Objectives:

  • Review the functions of a multimeter.
  • Name the safe practices you should use when troubleshooting with a VOM.
  • How to measure circuit resistance.
  • Learn the purpose of, and how to perform, tests for continuity and short circuits.
  • Perform resistance tests on resistors, fuses, solenoids, relays, switches, transformers, motors and semiconductors.
  • How to take basic current measurements on power supplies, AC feeder lines and other such circuit areas.
  • Measure current by using a direct series connection or by using a clamp-type ammeter.
  • How to take basic voltage measurements on both AC and DC systems.
  • Measure the output voltage of a DC power supply and the voltage of an AC feeder line.
  • Measure voltage at disconnect switches, circuit breakers, contactors and transformers.
  • Perform voltage tests on circuit boards, PLC systems and motor circuits.

Using Basic Oscilloscopes

Course #: 086027
Course Objectives:

  • An introduction to the basic controls and functions of an oscilloscope.
  • Describe the component parts and features of a standard, dual-trace oscilloscope.
  • How to use the front panel controls.
  • How to connect an oscilloscope to a circuit.
  • Learn how to perform low-voltage measurements on circuit boards.
  • Measure the voltage output of a power supply and AC ripple.
  • Describe how to perform measurements in SCR and TRIAC circuits.
  • Test both DC and AC servo motor controller circuits and heater controller circuits.
  • Perform basic scope measurements on digital circuits.
  • Learn how to use an oscilloscope to troubleshoot industrial systems.

Experiments in Electrical Measurements ­ Lab Manual

Course #: 086089
Duration: 10 hours (includes 1 test)
Prerequisites:

  • Analog Circuit Measurement (Block A23)
  • Electronics Simulation Software (086800)

What Students Learn:

Students will complete lab exercises and troubleshooting problems using the electronics simulation software. This lab manual will provide experience using the many simulated instruments that are part of the software package. Troubleshooting simulations using the digital multimeter, oscilloscope, function generator, and bode plotter are included in these exercises. The manual includes the basic operational instructions for the software.

Electrical Safety for the Trades

Course #: 186005
Course Objectives:

  • Explain how electricity can harm you and your property.
  • Discuss the importance of properly using quality electrical components.
  • Follow the basic methods of protection when wiring electrical installations.
  • Tell why it is important to ground electrical equipment and systems.
  • Select the type of electrical equipment to use in a hazardous location.
  • List the safety practices required in an electrical work area.
  • Talk about the importance of a clear working space around electrical equipment.
  • Educate your own level of safety training to be sure it matches the electrical work you are performing.

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