In recent years, cells and batteries—especially cells—have become available in many different sizes and shapes besides the old cylindrical cells, transistor batteries and lantern batteries. In this article, you will learn about three types of miniature cells and batteries. … [Read more...] about Miniature cells and Batteries – Silver Oxide, Mercury and Lithium Cells
Electric Vehicles
Video : How Does a Tesla Electric Car Work?
Electric cars are making big waves in the automobile world. These noise-free, pollution-free and high-performance vehicles are expected to make their I.C. engine counterparts obsolete by 2025. This video will unveil the hidden technologies behind the Tesla Model S, which … [Read more...] about Video : How Does a Tesla Electric Car Work?
Stroboscopic Effect in Fluorescent Lamps
The Stroboscopic Effect in Fluorescent lamp is a phenomenon which causes running or moving equipment to appear stationary or appear to be operating slower than they actually are. Fluorescent materials when subjected to electromagnetic radiations of a particular wavelength, … [Read more...] about Stroboscopic Effect in Fluorescent Lamps
Working Principle of DC Motor
A DC motor is an electrical machine that converts electrical energy into mechanical energy. The working of DC motor is based on the principle that when a current carrying conductor is placed in a magnetic field, it experiences a mechanical force. The direction of the … [Read more...] about Working Principle of DC Motor
Armature Reaction in Alternator
Armature reaction in alternator is the effect of armature flux on the field flux (i. e., rotor ampere-turns). Read this article to learn more. We have already discussed the effect of armature reaction on the air gap flux in DC Motor and DC Generator in previous articles. … [Read more...] about Armature Reaction in Alternator
Electric Motor Maintenance : Preventive, Predictive and Reactive Maintenance
Electric Motors need maintenance regularly in order to avoid failure and prolong their lifespan. Generally, motors and motor parts should be maintained and tested at least every 6 months. Then only it is possible to maintain a motor’s life and efficiency. We are going to deal … [Read more...] about Electric Motor Maintenance : Preventive, Predictive and Reactive Maintenance
Split Phase Induction Motor – Operation and Characteristics
Before going to the operation and characteristics of split-phase induction motor we should first understand why single phase induction motor is not self-starting. To make a single-phase induction motor self-starting, we should somehow produce a rotating magnetic field. This … [Read more...] about Split Phase Induction Motor – Operation and Characteristics
Speed Control of DC Motor (Shunt, Series and Compound)
Speed control of dc motor is achieved using different methods. There are three types of dc motors. For each of them, there are different methods of speed control. Each of them is discussed in this article. The principal advantage of a DC motor over AC motor is that its speed … [Read more...] about Speed Control of DC Motor (Shunt, Series and Compound)