Block Diagram of an AC LocomotiveThe following figure shows the block diagram of an AC locomotive.AC Locomotive - Function of Each PartThe working and function of each part of an AC locomotive is described below −The AC power at 25 kV is taken from the overhead conductor wire (called as ... Read More

An electrical device which converts light energy into electrical energy through the photovoltaic effect is known as photovoltaic cell or PV cell or solar cell. A photovoltaic cell is basically a specially designed p-n junction diode.Construction and Working of Photovoltaic CellThe construction of a photovoltaic cell is shown in the ... Read More

LED LampAn optoelectronic device which emits light based on the principle of electroluminescence is known as LED (Light Emitting Diode) lamp.Electroluminescence is the emission of light due to the interaction of an electric field with a suitable solid. It was noticed in 1962 that a forward biased gallium-arsenide junction was ... Read More

An electrochemical process that removes material from a metallic workpiece is known as electropolishing. It is also known as electrochemical polishing or electrolytic polishing.Electro-polishing uses a combination of rectified current and a blended chemical electrolyte bath to remove flaws from the surface of a metal part. Electropolishing is often described ... Read More

What is Electrodeposition?An electrolytic process by which one metal is deposited over other metal or non-metal is known as electrodeposition.Electrodeposition is widely used for decorative, protective and functional purposes. The process of electrodeposition includes −Electroplating − It is the process of deposition of metal over any metallic or non-metallic surfaces ... Read More

Electric TractionThe action of pulling something over a surface (especially a road or a track) is known as traction. The action of drawing of vehicles by electric power derived from overhead wires, third rail, storage batteries or diesel generators mounted on the vehicles is known as electric traction. In simple ... 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 can be of the following three types −Individual DriveGroup DriveMulti-motor driveIn this article, ... Read More

What is an Electric Drive?The combination of an electric motor, energy transmitting shaft and control device 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 can be of the following three types −Individual DriveGroup ... Read More

What is an Arc Lamp?An Arc Lamp is 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. The first arc lamp was invented by Sir Humphry Davy in 1807.Working Principle of ... Read More

What is Anodizing?The process of deposition of an oxide film on a metal surface is known as anodizing. The anodizing is an electrolytic passivation process used to increase the thickness of the natural oxide layer on the surface of metal workpieces.Anodizing of AluminiumAluminium alloys are anodized for the following reasons ... Read More