Online Chapter-2 eLearning

Wet Scrubbers for Particulate Matter Control Overview Wet scrubbers are a pollution control devise used in the industry for removal of particulate material within a captured air stream. There are numerous types of wet scrubbers which remove both acid gases and particulate mater (PM). This course describes the commonly applied scrubber designs used to remove PM from stationary sources. Design and operating parameters are presented. Various  more...

Introduction to Batteries Electricity cannot always be generated where and when it is needed, so batteries are used in instances where direct current is needed and/or there is no access to a power outlet, or a cord becomes cumbersome. A battery is a device where chemical energy is converted to electrical energy. Many different types of batteries are available for a wide variety of applications, from storing solar power  more...

Inductance Fundamentals Inductance is the property of an electric circuit component that opposes any change in electric current. It is a measure of the amount of magnetic flux produced for a given electric current and is designated by letter ? L? . An inductor is a component designed to produce a specific inductance i.e. having no resistance or capacitance. An inductor, when subjected to an increasing electrical current  more...

Circuit Protection Devices Too much current flowing through an electric circuit can damage the circuit and create a safety hazard. How much current is "too much current"? That depends on the circuit and its components. For some circuits, 1 ampere would be too much current, while for other circuits 1 ampere would be perfectly acceptable. Circuit protection devices protect electrical equipment by rapidly  more...

Wiring Techniques ...icity and Electronic Training Series; Module-4 and covers Chapter-2 titled ? Wiring Techniques? . This course will be extremely helpful to engineers who: a) specify wiring techniques in project specifications, b) provide technical oversight of electrical crafts on construction sites, and c) desire to build on their design experience by learning more about field installation and termination  more...

Soil Vapor Extraction Overview EPA confirmed over 7,300 new releases from underground storage tanks (USTs) during fiscal year 2008, bringing the cumulative total to 480,000 releases. Of these, about 103,000 are still in cleanup status. (Source: EPA, FY 2008 End of Year Activity Report, 11/22/2008). These UST leaks pose a grave threat to human health and the environment by contaminating groundwater and soil. As an  more...

Alternative Energy Technology Profiles This course provides an overview of alternative power technologies that can be used to generate and distribute energy. Over fifteen alternative power technologies covering such topics as; biofuels, geothermal, microturbines, fuel cells, wind, solar, hydropower, and reciprocating engines are covering in this course. Each technology is briefly described to include the system description and concept,  more...

Fluid Power Part 1 Hydraulic Principles Most modern machinery today uses fluid power principles to do work so as to make our lives easier. Think about your car's brakes and how, by stepping on the brake pedal, you apply stopping pressure on the brakes on all four wheels. The ease with which we drive and steer our cars today is because of fluid power. You see fluid power at automobile service centers lifting the cars so that mechanics  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...

Lubrication - Fundamentals Overview Friction is a force that resists relative motion between two surfaces in contact. Friction can be beneficial, such as when attempting to plant your feet to move a heavy object. However, friction in rotating equipment can be detrimental. Excessive friction causes premature wear and generates heat, which results in wasted energy. In this course, the student will learn the basics of  more...