What is a Welding Position?The technique which allows a welder to join the metals in the position in which they are found or the position in which a specific component will be used, is called the welding position.According to the American Welding Society, there are following four welding positions in ... Read More

Electric HeatingThe process in which electrical energy is converted into heat by resisting the free flow of electric current is known as electric heating. Therefore, the heat is produced due to circulation of electric current through a resistance. This electric current may be circulating directly due to the application of ... Read More

Electric Arc WeldingThe electric arc welding is the welding process which uses electric arc to create heat to melt and join the metals. In the electric arc welding, the electric power supply creates an electric arc between the electrode and the base material.Depending upon the type of power supply used, ... Read More

Heat TransferThe heat transfer is defined as the transmission of heat energy from one region to another region as a result of temperature gradient. In actual practice, the heat transfer always takes place from the region of high temperature to the region of low temperature.Modes of Heat TransferThe transfer of ... Read More

Resistance WeldingResistance welding is the welding process of joining of metals by applying mechanical pressure and passing a heavy current for a length of time through the metal parts which are to be joined. The chief advantage of the resistance welding is that it does not require any other material ... Read More

There are two types of electric currents used for welding process viz. AC and DC. There are many differences between the AC welding machine and the DC welding machine.AC Welding Machine Vs DC Welding MachineThe following table compares and contrasts the different features of AC and DC welding machines −AspectAC ... Read More

The atomic hydrogen arc welding is an arc welding process which uses an arc between two tungsten electrodes in a shielding atmosphere of hydrogen. The atomic hydrogen arc welding was invented by Irving Langmuir.The essentials of the atomic hydrogen arc welding are as follows −The electrical energy is supplied to ... Read More

Various Systems of Power TransmissionFor the transmission of electrical power from the generating stations to the substations for distribution, there are various types of power transmission systems are adopted. However, for the transmission of electric power, three-phase three wire transmission system is universally adopted.The different possible systems for electric power ... Read More

Depreciation of Power Station EquipmentThe reduction in the value of the equipment and other property of the power station every year is known as depreciation. Therefore, a suitable amount, called depreciation charge, must be set aside annually so that by the time the life span of the power plant is ... Read More

Units of EnergyThe capability of an object to do work is called its energy. In electrical engineering, the most important forms of energy are electrical energy, mechanical energy and thermal energy. Different units of measurement are used for the various forms of energy. Although, the units of electrical, mechanical and ... Read More