Coated ElectrodeA coated electrode is made of a metallic wire (called core wire) coated uniformly with flux material. While fluxing, the electrode about 20 mm of its length is left bare at one end for mounting it into the electrode holder. The flux material used for coating of the electrode ... Read More

When the two-phase AC electrical power is transmitted through the underground cables from the generating station to the consumers, then the transmission system is called the underground two-phase AC system of transmission.Depending upon the number of conductors used, the underground two-phase AC system is classified into two types viz −Two-phase ... Read More

Underground Three Phase AC SystemWhen the three phase AC electric power is transmitted through the underground cables, then the system of electric power transmission is called the underground three phase AC system.Depending upon the number of conductors used, the underground three-phase AC system of electric power transmission is classified into ... Read More

Underground Single-Phase AC SystemThe electric transmission system which transmits the single-phase AC electric power through the underground cables is termed as the underground single-phase AC system of transmission.The underground single-phase AC system of electric power transmission is classified into three types viz. −Single-Phase Two-Wire AC SystemSingle-Phase Two-Wire AC System with ... Read More

Underground DC SystemWhen the DC electric power is transmitted from the power generating station to the consumer through the underground cables, then the electric power transmission system is called the underground DC system.The underground DC transmission system is classified into three types −Two-Wire DC SystemTwo-Wire DC System with Mid-Point EarthedThree-Wire ... Read More

Suspension InsulatorThe suspension type insulator is the one which consists of a number of porcelain discs connected in series by metal links in the form of a string as shown in Figure-1.Potential Distribution over Suspension Insulator StringAs we know the string of suspension insulators consists of a number of porcelain ... Read More

Three-Phase Transmission SystemA three-phase transmission system is the one in which three line conductors are used to transmit the AC electric power from generating station to the substations. The three-phase system is universally adopted for transmission of electric power.Depending upon the number of conductors used, the three-phase AC transmission system ... Read More

Single-Phase AC Transmission SystemThe electric power transmission system in which two conductors viz. phase conductor and neutral wire are used to transmit the electric power is known as single phase AC transmission system.The single phase AC transmission system can be classified into following three types viz. −Single-phase two-wire system with ... Read More

String EfficiencyThe suspension insulator is the one which consists of a number of porcelain discs connected in series by metal links in the form of a string.The voltage applied across the string of the suspension insulators is not uniformly distributed across the various discs, i.e. the disc nearest to the ... Read More

The choice of operating frequency for electric heating is a significant factor for heating because it greatly affects the work to be heated and the method of its heating, whether dielectric heating or induction heating.In practice, the furnaces operating on power frequency of 50 Hz can be of 1 MW ... Read More