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Utilization of Electrical Energy Articles
Found 123 articles
Difference between Arc Welding and Gas Welding
Welding is a process of melting and joining different types of materials together. There are several types of welding processes available that are used based on the types of materials being joined or melted. Two most extensively used types of welding are arc welding and gas welding. The fundamental difference between arc welding and gas welding is that arc welding uses electric current to produce heat for joining of metals, while the gas welding uses flammable gases to produce heat for welding process. Read this article to learn more about Arc Welding and Gas Welding and how they are different ...
Read MoreWhat is Street Lighting? – Objective, Principle, Advantages & Disadvantages
A source of light that is mounted on a lamp column or pole either on the side of the road or within the median to provide illumination is known as street lighting.Street lighting is required along the road to have safer, comfortable, convenient and efficient movement of vehicles at night.Objective of Street LightingThe primary objectives of street lighting are −Street lighting is required to increase or enhance the community value of the street.Street lighting is provided along the road sides to make traffic and obstructions on the road clearly visible in order promote safety and convenience.Street lights also make the ...
Read MoreWhat is Flood Lighting? – Definition, Purpose, Calculation and Applications
The flooding of large surfaces with light through powerful projectors, where the light sources are concentrated into narrow light beams using specific reflectors is known as flood lighting. Flood lighting is an artificial light with high-intensity, broad beam.Purpose of Flood LightingThe flood lighting may be employed for the following purposes −To enhance the beauty of the ancient monuments at night.To illuminate the railway yards, car parking, sport stadiums, construction sites, etc.To illuminate the advertising boards and show-cases, etc.Location and Mounting of ProjectorsIn practice, there are two possible locations of projectors for flood lighting, which are −For small buildings, uniform flood ...
Read MoreWhat are Welding Defects? – Types, Causes, and Remedies
The irregularities formed in the given weld metal due to wrong welding process or incorrect welding patterns, etc. are known as welding defects.The following table elaborates the different types of welding defects, their causes, and how to prevent these defects −The irregularities formed in the given weld metal due to wrong welding process or incorrect welding patterns, etc. are known as welding defects.The following table elaborates the different types of welding defects, their causes, and how to prevent these defects −Welding DefectCauses of Welding DefectRemediesBlow holeToo fast cooling rate.Wet, unclear or damaged electrode.Too thick base metal.Long or short arc length.Rusted ...
Read MoreWhat is Photovoltaic or Solar Cell? – Construction, Working and Advantages
An electrical device which converts light energy into electrical energy through the photovoltaic effect is known as photovoltaic cell or PV cell or solar cell. A photovoltaic cell is basically a specially designed p-n junction diode.Construction and Working of Photovoltaic CellThe construction of a photovoltaic cell is shown in the following figure.A photovoltaic cell consists of a base metal plate and it is made of either steel or aluminum over which a metallic selenium layer is situated which is light sensitive and acts as the positive terminal.An electrically conducting layer of cadmium oxide is applied by sputtering over the selenium ...
Read MoreWhat is LED Lamp? – Construction, Working, Advantages & Applications
LED LampAn optoelectronic device which emits light based on the principle of electroluminescence is known as LED (Light Emitting Diode) lamp.Electroluminescence is the emission of light due to the interaction of an electric field with a suitable solid. It was noticed in 1962 that a forward biased gallium-arsenide junction was found to be an efficient emitter of radiation.In case of electroluminescent p-n junctions, when biased in the forward direction, some of the energy dissipated is converted into light and hence, these are also called as semi-conductor lamps.Construction of LED LampFor the construction of LED lamps, following semiconductor materials are used ...
Read MoreWhat is Electropolishing? – Process, Advantages and Applications
An electrochemical process that removes material from a metallic workpiece is known as electropolishing. It is also known as electrochemical polishing or electrolytic polishing.Electro-polishing uses a combination of rectified current and a blended chemical electrolyte bath to remove flaws from the surface of a metal part. Electropolishing is often described as the reverse of electro-plating.Process of ElectropolishingThe schematic arrangement for the electropolishing is shown in the figure.In electro-polishing, the metallic workpiece is immersed in a temperature controlled bath of electrolyte and serves as the anode as it is connected to the positive terminal of a DC power supply.The negative terminal ...
Read MoreWhat is Electrodeposition? (Factors Affecting the Quality of Electrodeposition)
What is Electrodeposition?An electrolytic process by which one metal is deposited over other metal or non-metal is known as electrodeposition.Electrodeposition is widely used for decorative, protective and functional purposes. The process of electrodeposition includes −Electroplating − It is the process of deposition of metal over any metallic or non-metallic surfaces for protecting the metals from corrosion.Electro metallization − It is a process by which a metal can be deposited on a conducting base for decorative or protective purposes.Electro typing − It is a process used to reproduce printing, set up typing and medals, etc.Electro forming − It is a process ...
Read MoreWhat is Electric Traction? – Definition, Advantages and Disadvantages
Electric TractionThe action of pulling something over a surface (especially a road or a track) is known as traction. The action of drawing of vehicles by electric power derived from overhead wires, third rail, storage batteries or diesel generators mounted on the vehicles is known as electric traction. In simple words, the traction system which uses electric power for its operation is known as electric traction.The electric traction system is widely used in electric trains, tramcars, trolley buses and hybrid vehicles, etc.Advantages of Electric TractionThe major advantages of electric traction system over other types of traction (such as steam traction) ...
Read MoreWhat is an Electric Drive? – Block Diagram, Advantages and Disadvantages
What is an Electric Drive?The combination of an electric motor, energy transmitting shaft and control device for motion control is known as electric drive. The following figure shows the block diagram of a typical electric drive.Based on their assembly, electric drives can be of the following three types −Individual DriveGroup DriveMulti-motor driveIn this article, let's check where exactly the electric drives are used and what are benefits and drawbacks of using electric drives.Advantages of Electric DriveThe advantages of using electric drives are listed below −Electric drives are environment friendly as they do not produce smoke, fumes, ash, etc. Therefore, electric ...
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