Found 60 Articles for Distribution of Electric Power

A smart meter is an electrical instrument used for measuring electrical energy consumed and other electrical parameters of the electricity supply system. It is basically a type of energy meter equipped with more advanced metering technologies. The main advantage of using a smart meter is that it does not require any manual reading system for billing and other purposes. Instead, it can automatically send the data through communication channels to the electricity company. Therefore, smart meters help in reducing the operational cost and time. In this article, we will explain the major advantages and disadvantages of smart meters. Before ... Read More

What is Submerged Arc Welding?Submerged arc welding (SAW) is a welding process that involves the formation of an electric arc between a continuously fed electrode and the workpiece to be welded. The process of submerged arc welding was developed by the Linde-Union Carbide Company.SAW requires a continuous fed of consumable solid or flux cored tubular electrode. In case of submerged arc welding, the molten weld and the arc are protected from the atmospheric contamination by being submerged under a blanket of granular fusible flux consisting of lime, silica, manganese oxide, calcium fluoride and other compounds.A simplified schematic diagram of submerged ... Read More

What is Resistance Heating?When the heat is produced by passing electric current through the resistance of a conductor, it is called electric resistance heating (ERH). This method of electric heating is based on the principle of I2R loss. If ‘P’ is the electric power developed in the heating circuit and ‘t’ is the time in seconds. Then, heat energy produced is given by, H = 0.24 pt CaloriesThe power P depends upon the magnitude of current through the circuit. The source of electric supply can be AC or DC of any suitable voltage and frequency.The major applications of the resistance ... Read More

What is Plasma Arc Welding?Plasma arc welding (PAW) is a welding process in which the electric arc is formed between an electrode and the workpiece. The electrode used in the plasma arc welding is usually but not always made of sintered tungsten. The process of plasma arc welding was discovered by Robert Merrell Gage in 1957.By positioning the electrode within the body of the welding torch, the plasma arc can be separated from the shielding gas envelope. Then, the plasma is forced through a fine-bore copper nozzle which constricts the arc and the plasma exits the nozzle orifice at high ... Read More

The type of electric welding in which an arc is established between the workpiece and the filler metal electrode is known as metallic arc welding or simply metal arc welding.The figure shows the simplified circuit diagram of metallic arc welding.In metallic arc welding, the intense heat of the arc forms a molten pool in the metal being welded and at the same time melts the tip of the electrode. As the electric arc is maintained, filler metal from the tip of the electrode is transferred across the arc and it fuses with the molten base metal.The electric arc in this ... Read More

Induction heating is the process of heating the materials which are electrically conductive by electromagnetic induction like metals.Working Principle of Induction HeatingInduction heating makes use of the induced current by the electromagnetic induction in the charge to be heated. The induction heating works on the principle of transformer action, in which the primary winding which is supplied from an AC source is magnetically coupled to the charge, to be heated, which acts as a short-circuited secondary of a single turn.When the AC supply is connected to the primary winding, it induces currents in the charge. As the secondary, i.e., the ... Read More

What is Gas Tungsten Arc Welding?Gas tungsten arc welding (GTAW) is an electric arc welding process which uses a non-consumable tungsten electrode to produce the weld. The gas tungsten arc welding is also known as tungsten inert gas (TIG) welding.In case of GTAW, the weld area is protected from the atmospheric contamination by a shielding gas. This shielding gas usually an inert gas such as argon. In general, a filler material is also used, although some welds, known as autogenous welds, do not require it.In this welding process, a constant current welding power supply is used to produce energy which ... Read More

What is Gas Metal Arc Welding?Gas metal arc welding (GMAW) is a semi-automatic or automatic arc welding process in which a continuous and consumable wire electrode and a shielding gas are fed through a welding gun. The gas metal arc welding is also known as metal inert gas (MIG) welding or metal active gas (MAG) welding. MIG and MAG are the subtypes of the gas metal arc welding.Gas metal arc welding was originally developed for welding aluminum and other non-ferrous materials in the 1940s. Although, the gas metal arc welding was soon applied to steels as it allowed for smaller ... Read More

Electron Beam WeldingElectron beam welding (EBW) is a welding process in which a beam of high velocity electrons is applied to the materials being joined or fused. When these high velocity electrons impact the workpieces, the kinetic energy of the electrons is transformed into heat, which melts the workpieces.The first practical electron beam welding machine was developed by a German physicist Karl-Heinz Steigerwald in 1958. In order to prevent the distortion of the electron beam, the electron beam welding is performed in vacuum.Working Principle of Electron Beam WeldingA typical schematic of the electron beam welding (electron beam gun) is shown ... Read More

Electric WeldingThe process of joining materials together through the use of heat that is produced by an electric current is known as electric welding.Electric welding is often done by melting the workpieces by the heat produced by electric current and adding a filler material to form a pool of molten material that cools to become a strong joint.In other words, the branch of welding in which electric current is used to produce the large heat required for joining of pieces of metals together is called the electric welding.The electric welding is gaining acknowledgement, because of its machinery is inexpensive and ... Read More