The combination of an electric motor, energy transmitting shaft and control devices for motion control is known as an electric drive. The following figure shows the block diagram of a typical electric drive.Based on their assembly, electric drives can be of the following three types −Individual DriveGroup DriveMulti-motor driveIn this ... Read More

LASER stands for Light Amplification by Stimulated Emission of Radiation. A LASER is a source of light which produces a very narrow beam of light that is useful in many technologies and instruments.Construction and Working of LASERThe construction of a typical red LASER is shown in the figure.It contains a ... Read More

A metal halide lamp, also called mercury halide lamp, is an electric lamp that produces light by an electric arc through a gaseous mixture vaporized mercury and metal halides. The metal halide lamp was invented by Dr. Reiling in 1960.Construction of Metal Halide LampThe construction of a metal halide lamp ... Read More

The combination of an electric motor, energy transmitting shaft and control devices for motion control is known as electric drive. The following figure shows the block diagram of a typical electric drive.Based on their assembly, electric drives are classified into the following categories −Individual DriveGroup DriveMulti-motor driveGroup driveWhen several machines ... Read More

IlluminationWhen light falls on a surface, the surface is illuminated and the phenomenon is known as illumination. Mathematically, the illumination is defined as the luminous flux falling on a surface per unit area, i.e., $$\mathrm{\mathrm{Illumination, }\mathit{E}\:=\:\frac{\mathrm{Luminous \:flux}}{\mathrm{Area}}}$$Good Illumination SchemeA good illumination scheme is the one under the influence of which ... Read More

Welding is a skilled work and at the same time it is risky and requires safety equipment and accessories to safeguard the welder. Welders use various types of welding equipment accessories for protection and safety, which we are going to explain in this article.Welding GlovesThe gloves are used for the ... Read More

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