The electricity which we use at home is normally the alternating current or AC. AC current is result of alternation of the generator armature or alternator. The electricity or current flows in one direction and then reverse direction. Each cycle in AC current consists of a positive and a negative alternation. During AC generation waveform produced… Read More »
As a new electrical student or a common man this questions comes in mind that why we prefer 3 phase power system. In recent years 3 phase electric wiring has become common and mostly used worldwide for power generation, power transmission, distribution and three phase engines or motors. A single-phase electric power supply is the… Read More »
A stepper motor is an electromechanical device which converts electrical pulses into discrete mechanical movements. The shaft or spindle of a stepper motor rotates in discrete step increments when electrical command pulses are applied to it in the proper sequence. Stepper motor (or step motor) is in fact a brushless DC electric motor that divides… Read More »
The phenomena of levitation of a magnet above a cooled superconductor is known as the Meissner Effect. If a superconductor is cooled below its critical temperature while in a magnetic field, the magnetic field surrounds but does not penetrate the superconductor. The magnet induces current in the superconductor which creates a counter-magnetic force that causes the… Read More »
superconductor definition Before understanding the superconductor lets see what is superconductivity, it is the flow of electric current without resistance in certain metals, alloys, and ceramics at temperatures near absolute zero, and in some cases at temperatures hundreds of degrees above absolute zero = -273ºK. Therefore superconductor is the material having almost zero resistivity and… Read More »
In one of our previous post we mentioned details about the variable frequency drives principle. Now this page provides you the method of testing and commissioning of VFD drives in simple steps. Remember before testing all installation and construction completion should be approved. Power Connection Requirements: Megger the incoming and outgoing power cable & connections for… Read More »