Article Categories
- All Categories
-
Data Structure
-
Networking
-
RDBMS
-
Operating System
-
Java
-
MS Excel
-
iOS
-
HTML
-
CSS
-
Android
-
Python
-
C Programming
-
C++
-
C#
-
MongoDB
-
MySQL
-
Javascript
-
PHP
-
Economics & Finance
Power Systems Articles
Page 10 of 19
Different Types of Electric Lamps and Their Features
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 various features of these lamps.Incandescent Lamp vs. Fluorescent Lamp vs. CFLThe following table compares the features of incandescent lamp, fluorescent lamp, and CFL.Basis of ComparisonIncandescent LampFluorescent LampCFLPrinciple of operationHeating effect of electric currentGas discharge (or ionization of gas by electric current)Gas dischargeColor of light emittedYellowWhiteWhiteProduction of heat during operationMoreLessModerateCostLessMoreMoreNeed of ...
Read MoreElectric Traction: Comparison between Mechanical Braking and Electrical Braking
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 breaking and which one is more efficient.Mechanical BrakingMechanical brakes are applied by brake shoes which are pressed with force against the wheel of the train. In mechanical braking, the braking force is generally produced by means of piston-cylinder arrangement. The movement of the piston is transmitted to the brake shoes ...
Read MoreInternal Combustion Engine Vs. Electric Vehicles
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, we can say the electric vehicles are the automobiles that are propelled by one or more electric motors using the energies stored in batteries.Comparison between IC Engine Vehicle and Electric VehicleThe following table highlights the points that differentiate an IC Engine Vehicle from an Electric Vehicle −Point of ComparisonInternal Combustion ...
Read MoreComparison between AC and DC Traction System (AC Traction vs DC Traction)
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 and suburban heavy traffic and 15 to 30 km for main line service.AC Traction SystemA traction system in which AC motors (1-phase or 3-phase induction motors) are used for running the electric trains is known as AC traction system.In AC traction system, a high voltage is fed to the overhead ...
Read MoreElectric Traction: Steam Engine Drive, Diesel Engine Drive and Electric Drive
What are Traction Systems?The word "traction" means the action of pulling an object over a surface, especially a road or track. The action of propelling 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 words, the traction system which uses electric power for its operation is known as electric traction.The electric traction system is widely used in electric trains, tramcars, trolley buses and hybrid vehicles, etc.Traction systems can either be electric or non-electric depending on the type of source from where they draw ...
Read MoreCompact Fluorescent Lamp (CFL) – Construction, Working and Applications
A compact fluorescent lamp (CFL) is a type of fluorescent lamp that has been compressed into the size of an ordinary incandescent lamp. It works on the principle of gas discharge, i.e., ionization of gas by the electric current.The modern CFL was invented by Edward E. Hammer in 1973.CFLs are the lamps of choice for those looking for an energy efficient alternative to incandescent lamps.CFLs consume very less power than an incandescent lamp.The increasing variety of shape and color and small size of CFL have made them more versatile and acceptable than the conventional long tube fluorescent lamps.Construction and Working ...
Read MoreWhat is a Photometer? – Principle, working and Types
Photometry and PhotometerThe measurement of light's brightness or luminous intensity is known as photometry. Photometry focuses on the perceived brightness to the human eyes. The photometry takes into account the eye's sensitivity to varying degrees of light and focuses primarily on the visible light spectrum.Thus, the photometry involves the measurement of candle power. The candle power of a given source of light in any given direction is measured by comparison with a standard source. In order to eliminate the errors in the measurement of the candle power, the measurement is performed in a dark room with dead black walls."The device ...
Read MoreWhat is Seam Welding? – Working and Applications
Seam WeldingThe welding process in which two similar or dissimilar materials are joined at the seam by the application of heat generated from electrical resistance is known as seam welding. The seam welding is a types of resistance welding, in which weld is produced by roller electrodes instead of tipped electrodes.Most seam welding processes produce a continuous or intermittent seam weld near the edge of two overlapped metals by using two machine driven roller electrodes. As in the seam welding process, the roller electrodes move over the metal workpieces, the workpieces are under pressure and the current passing through them ...
Read MoreWhat is Polar Curve in Illumination?
Polar CurvesThe plots drawn between the candle power and angular position are known as polar curves. Due to unsymmetrical shape of the lamps, the luminous intensity is not uniform in all directions. The luminous intensity in all directions can be represented with the help of polar curves.The polar curves are drawn by taking the luminous intensities in various directions at an equal angular displacement in the sphere. A radial ordinate pointing in any particular direction on a polar curve represents the luminous intensity of the source when it is viewed from the direction.Therefore, the polar curves are classified into two ...
Read MoreWhat is Laser Beam Welding? – Process, Advantages, Disadvantages and Applications
Laser Beam Welding (LBW) is a fusion welding process in which multiple pieces of metal are joined together through the use of laser. In LBW, the laser beam acts as a concentrated source of heat, which allows narrow, deep welds and high welding rates. The laser beam welding process is frequently used in high volume applications, such as in the automotive industry.Laser Beam Welding ProcessThe figure shows the schematic diagram of the laser beam welding (LBW).The main parts of the set up used for the laser beam welding are as follows −Laser Machine – It is the machine that is ...
Read More