Online Basic Dc Theory eLearning

Online MFP Fundamentals This is an entry-level course for service technicians who need to know the basics of MFP or Multi-Function Printers. This course provides information concerning basic MFP image formation and the concept of faxing for both analog and LANfax. Also covered is digital sending concepts including fax over IP and sending email. Important information on what is generally found in MFP menus and printer  more...

Preparing to Lead Human Resource professionals know that the quality of the relationship between employees and their immediate supervisor is the primary factor that determines the employee? s performance, productivity, and morale. The best way to recruit and retain employees is for an employer to develop the organization? s leadership skills from top to bottom. This course will be an essential tool for those  more...

Optimum Design of Indeterminate Beams Overview The design and analysis of indeterminate frames and beams are important problems encountered by all structural engineers. With modern computer programs, analysis is not a difficult problem. Design is more complex and less amenable to programming. For efficient design, something between the following two extremes is needed: (1) The first intuitive approximation of the structural design  more...

Controlling VOCs Using Carbon Adsorbers Overview In air pollution control, adsorption is employed to remove volatile organic compounds (VOCs) from gas streams, when a stringent outlet concentration must be met and/or recovery of the VOC is desired. Although there may be several types of adsorbants used, this course is oriented toward the use of activated carbon, a commonly used adsorbent for VOCs. Of the various types of adsorption  more...

Gas Absorption for Air Pollution Control Gas absorbers are used extensively in industry for separation and purification of gas streams, as product recovery devices, and as pollution control devices. Absorption is a process where one or more soluble components of a gas mixture are dissolved in a liquid (i.e., a solvent). There are different types of absorption equipment. This course looks at the various absorbers used to control gas  more...

Finite Element Structural Analysis on an Excel Spreadsheet Finite element software and spreadsheet software are two essential tools for structural engineers. This course combines the two into a FE spreadsheet that puts the power of FE method into the versatility of a spreadsheet. The user is provided with a Microsoft Excel spreadsheet that solves FE two dimensional (2D) frame-type structural engineering problems. This spreadsheet is simplistic in  more...

Electrostatic Precipitators for Air Pollution Control Overview An electrostatic precipitator (ESP) is a pollution control device that uses electrical forces to move the particles out of the flowing gas stream and onto collector plates for particulate emission control. There are different configurations and types of ESPs designed and operated for removal of particulate mater (PM). This course describes the commonly applied ESP designs used to  more...

Introduction to Capacitance Capacitance is the property of an electric conductor that characterizes its ability to store an electric charge. An electronic device called a capacitor is designed to provide capacitance in an electric circuit by providing a means for storing energy in an electric field between two conducting bodies. A capacitor in its simplest form consists of two conducting plates separated by an insulating  more...

Variable Frequency Drives I wrote this courses with the intention of showing how the various parts of a Variable Frequency Drive (VFD) work and how they are integrated to make an operating system. It starts with a review of AC and DC theory that is applicable to the way that an Inverter (another name given to VFD? s) works. An explanation is given of how the various solid state electronic components work. This course then  more...

Power Factor Correction This course was written with the intention of removing the magic and mystique that surrounds the idea of Power Factor Correction. With that in mind, the course starts by reviewing direct current and single phase alternating current circuits, including resistive, capacitive, and inductive circuits. This is a quick review emphasizing voltage, current, and power relationships in these three common  more...

DC Circuit Switching Transients This course is intended to benefit engineers who design, use, inspect, or repair circuits that contain DC power sources and accompanying DC components. Application of DC circuits includes control, instrumentation, and motor excitation. Whereas both AC and DC circuits as well as transmission lines are susceptible to transient phenomena, DC components are particularly subjected to transients  more...

Power System Neutral Grounding Fundamentals Overview One of the most critical decisions faced by the designer of a power system is how the neutral of the system should be grounded. This course presents the subject of neutral grounding in a very structured fashion. First, a simple equivalent circuit is developed for a generic power system, and then each of the options for neutral grounding is ?tested? in that equivalent circuit to  more...

Introduction to Matter Energy and Electricity Have you ever wondered about all the material or matter around us? What is it? Is there any universal explanation for its appearance, properties, and behavior? One theory that explained some of the properties of matter was the molecular theory of matter, which states that matter consists of small molecules in motion. This theory provides an explanation of many characteristics of matter,  more...

Reactance in AC Circuits - Fundamental Concepts Reactance is the measure of the opposition to the flow of alternating current caused by the inductance and capacitance in a circuit rather than by resistance. Steady electric currents flowing along conductors in one direction undergo opposition called electrical resistance, but no reactance. Reactance is present in addition to resistance when conductors carry alternating current. Reactance also  more...

Introduction to Electron Tubes An electron tube is a device used for the processing of electrical signals. Although solid state semiconductors have replaced the electron tubes in most applications, there are still niche applications where electron tubes not only continue to see practical use, but perform their respective tasks better than any solid-state device. For example, tubes are still used in some high-power amplifiers,  more...

Basic Electrical Theory - Electricity and Magnetism Electricity and magnetism run nearly everything we plug in or turn on. Although it? s something we take for granted, it has taken hundreds of years of experimentation and research to reach the point where we flick a switch and the lights go on. Magnetism and electricity are closely related phenomena. Electric charge is a fundamental property of matter. Matter is made up of electrons, neutrons,  more...

Basic Direct Current DC Theory ...k, Electrical Science; volume 1 of 4 and covers module 2, Basic DC Theory. The reader must take a multiple-choice quiz consisting of twenty-one (21) questions at the end of this course to obtain PDH credits. State Board Acceptance This course can be used by professional engineers to fulfill PDH requirements mandated by state and provincial licensing boards. Decatur Professional  more...

Fuses and Circuit Breakers Overview There are two basic methods of circuit protection. They are fuses and circuit breakers. There are many variations of fuses and circuit breakers. This course attempts to explain how and why fuses and circuit breakers work. There is some basic theory upon which these devices are designed. There is an explanation of some of the terms that are applied to fuses and circuit breakers and why  more...

Electrical Forensics Engineering Overview This course is a discussion of the science of forensics and how electrical energy fits into that science. Designed for engineers of all disciplines, this course contains much of the basic theory that is needed to even begin looking at the causes of failures in the electrical world. The discussion will include an emphasis on energy concepts. It is relatively easy to see and understand  more...

Fundamentals of Combustion for Environmental Applications Overview Workers in environmental engineering, as design engineers, operators, permitting agency staff, consultants, etc. will benefit greatly from a basic understanding of the fundamental laws, relationships, and calculation methods that characterize the behavior of combustion systems. This course provides such a capability, introduces the concept of ?wastes as fuels? and gives the diligent  more...

Instrumentation and Control Temperature Pressure Flow Level and Position Indication Overview Instrumentation is the art of measuring the value of some plant parameters, for example, temperature, pressure, flow, or level to name a few, and supplying a signal that is proportional to the measured parameter. The output signals are standard signals and can then be processed by other equipment to provide indication, alarms or automatic control. This course covers five modules  more...

Air and Gas Compressors Overview The two-hour online course describes the applications, characteristics, and operation of various types of compressors. Reciprocating, rotary, centrifugal, and axial flow compressors are covered. The presentation is based on air compressors, but the principles apply to all gas and vapor compressors, such as those used on construction sites, refineries, process industry, refrigeration,  more...

Water Supply Plumbing Cross Connections Overview Plumbing cross-connections, which are defined as actual or potential connections between a potable and non-potable water supply, constitute a serious public health hazard. There are numerous, well documented cases where cross-connections have been responsible for contamination of drinking water, and have resulted in the spread of disease. The problem is a dynamic one, because piping  more...

Fluid Power Part 3 - Hydraulic Components Fluid systems involve the use of fluids to transmit and multiply force. The basic hydraulic unit for this purpose makes use of various hydraulic components such as reservoirs, actuators, filters and accumulators. It also involves the use of diverse types of controls including pressure control and valves, flow control, directional control and solenoids. In this 6-hour course, the reader will be  more...

Coatings - Corrosion Theory and Protection Overview Corrosion is defined as the deterioration of a material, usually a metal, because of a reaction with its environment and which requires the presence of an anode, a cathode, an electrolyte, and an electrical current. The annual cost of corrosion and corrosion protection in the U.S. is estimated to be in the billions of dollars. Corrosion can be mitigated by five basic methods: coatings,  more...

Fundamentals of Arc Welding Overview Qualified welders are needed in different branches of metal and building industries, as well as in pipelines, automotive, aircraft ? and shipbuilding industries. Simply stated, welding is a process of permanently joining materials (usually metals) through localized coalescence resulting from suitable combination of temperature, pressure and metallurgical conditions. Depending upon the  more...

Microsoft Access 2000 Microsoft Access 2000 gives you powerful new tools for managing your data. You can share your database with coworkers over an intranet, find and retrieve information quickly, and take advantage of pre-packaged automated solutions to quickly create databases. In Virtual Training Company's tutorial, author Lorie Flenner begins very basic, explaining the key concepts behind Access and relational  more...

Lotus Approach Millennium Edition Introduction Lotus Approach Millennium Edition is a relational database forming part of the SmartSuite office applications suite. This course is designed to allow readers to get to grips with the basic features of Approach. Readers will be able to create databases; view data, design data queries and produce reports. The course also provides an introduction to database theory and practice, plus hints and tips  more...

Corel Paradox 8.0 Introduction This course is designed to teach the basic skills required to start using Paradox 8.0 to a level of competence sufficient for readers to produce their own database application; to be able to view data, query files and produce simple reports. An introduction to database theory and practice, plus hints and tips on good database design techniques is also given.  more...

Microsoft Access 2002 (XP) Intermediate This intensive course will help readers to build on their basic understanding of Microsoft Access 2002, in order to produce more comprehensive and robust database applications. Readers will get experience in the theory and application of creating a database; creating more complex queries; and enhancing data entry and reporting with forms and reports.  more...

Microsoft Access 2002 (XP) Intermediate This intensive course will help readers to build on their basic understanding of Microsoft Access 2002, in order to produce more comprehensive and robust database applications. Readers will get experience in the theory and application of creating a database; creating more complex queries; and enhancing data entry and reporting with forms and reports.  more...