A type of electric lamp that produces light by creating an electric arc in the gap between two electrodes when the electric supply is connected to these electrodes is known as arc lamp.Types of Arc LampsArc lamps are classified into following four types, viz −DC Carbon Arc LampAC Carbon Arc ... Read More

A tungsten halogen lamp, also called halogen lamp, is a developed tungsten filament lamp. The halogen lamp consists of a tungsten filament that is enclosed in an environment of an inert gas and a small quantity of a halogen such as bromine or iodine.The combination of the tungsten filament and ... Read More

Welding is the process of joining two metals placed together by heating them to melting point. In electric welding, the heat required for welding process is obtained by the use of electrical energy.Factors Considered While Selecting a Welding System for a Particular JobThere are different materials or metals to be ... Read More

There are various types of electric lamps available in the market. The selection of a lamp depends upon the illumination area.Selection Criteria of Different Electric LampsThe following table highlights the points that you should consider while selecting a lamp depending upon the area to be illuminated.Illumination AreaSuitable Lamp / LampsGeneral ... Read More

A miniature gas discharge lamp in which the electrical discharge takes place through a mixture of gases containing a large proportion of neon gas is known as neon lamp.The working principle of the neon lamp is as follows −“Electrons are emitted from cathode by subjecting the surface of the cathode ... Read More

Types of Railway Services (Classification of Traction Services)Railways offer the following three types of the passenger traction services viz −City or Urban ServiceSuburban ServiceMain Line ServiceCity or Urban Railway ServiceIn the city or urban railway service, there are frequent stops, the distance between these stops being nearly 1 km or ... Read More

Individual Electric DriveIn an electric drive system, if an individual machine is fitted with its own motor and each operator has complete control on their machine, then it is termed as an individual electric drive.Examples − Drill machine, lath machine, etc.Group Drive SystemA group drive system uses a high powered ... Read More

The electric motors that generate power to rotate the wheels of the train are known as traction motors. The turning force produced by the traction motor is transmitted to the wheels of the train through the driving gear unit and axle. Traction motors should have high efficiency.Desirable Characteristics of Traction ... Read More

An electric lamp is a device that can generate artificial light by consuming electric energy. There are different types of lamps available in the market, which include −Incandescent LampFluorescent LampCompact Fluorescent LampSodium Vapor LampMercury Vapor LampHalogen LampMetal Halide LampNeon LampLED LampLASER LampIn this article, we will compare and contrast the ... Read More

With the modern traction equipment, fast trains can easily achieve the desired acceleration. However, if the stopping system or braking system of the trains fail, it will cause a great disaster. Therefore, braking system of trains is very important. In this article, let's understand how mechanical breaking differs from electric ... Read More