This article explains the measurement of three-phase power in star connected or delta connecter load using the wattmeter methods. The power in a three phase load can be measured by following methods: Three wattmeter method Two wattmeter method One wattmeter method The name of these methods indicates the number of wattmeters used in the measurement of … [Read more...] about Measurement of Three Phase Power | Wattmeter Methods
Are you an electrical engineer searching for a job now? Thinking of what to do next? Have you ever thought about what jobs you can do after your graduation? If you have these questions in your mind, then this article is for you. Keep reading. In this article I will list some of the common job roles and responsibilities handled by electrical engineers all over the … [Read more...] about What Jobs Electrical Engineers Do? | Roles and Responsibilities
Voltage, current, and resistance are three properties that are fundamental to almost everything you will do in electrical and electronics engineering. They are intimately related. In this article, we used water in a river analogy to explain what are current, resistance and voltage. This method will help the beginners to imagine and understand these fundamentals much … [Read more...] about What Are Current, Resistance and Voltage?
A LED that emits one color when forward biased and another color when reverse biased is called a multicolor LED.Related Article: Working of Light Emitting Diode (LED)One commonly used schematic symbol for these LEDs is shown below.Working of Multicolor LEDsMulticolor LEDs actually contain two pn junctions that are connected in reverse-parallel i.e. they are in parallel … [Read more...] about How Multicolor (Red Green Yellow) LEDs Work?
A light-emitting diode (LED) is a diode that gives off visible light when forward biased. Light-emitting diodes are not made from silicon or germanium but are made by using elements like gallium, phosphorus and arsenic. By varying the quantities of these elements, it is possible to produce light of different wavelengths with colors that include red, green, yellow and … [Read more...] about Working of Light Emitting Diode (LED)