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

Internal Combustion Engine VehicleVehicles with an Internal Combustion Engine (ICE) use fuel which combusts inside a combustion chamber with the help of an oxidizer (generally oxygen from air).Electric VehicleA type of vehicle that uses one or more electric motor for propulsion is known as electric vehicle (EV). In simple words, ... Read More

DC Traction SystemA traction system in which DC series motors are used for running the electric trains is known as DC traction system. The DC power to be fed to DC series motor is obtained from substations which are located at a distance of 3 to 5 km for urban ... Read More