Electricity generation

Nikola Tesla The inventor Nikola Tesla lived from July 10, 1856 to January 7, 1943, he was a well-known engineer who designed the alternating-current (AC) electric system. He was born in what is now Croatia; he came to the United States in 1884 and worked for Thomas Edison for a while before they both went their separate ways. Tesla sold several patent rights to George Westinghouse; one of those was his AC machinery. During Tesla’s career he discovered, designed and developed ideas for a number…

Abstract – Photocopiers make use of Toner (powder) to form the latent electrical image on the electrostatically charged drum. The paper has to slide over the drum during Xerography process and hence it picks up the toner. Vague issues cause the non-picking of toner particles (approximately 10%) and they are left over the drum. This non-picked toner is termed as Waste Toner (WT). As it adversely affects the quality of proceeding copies, this has to be removed from the drum. A cleaning blade made…

Did you know that Alexander Graham Bell invented the telephone? Alexander was constantly working on scientific experiments and he became a famous man. Now, hundreds of thousands people can communicate through phones. Bell also worked on a school to help the deaf to enroll. His invention helps life today because we can now communicate through technology called the telephone. Alexander’s Father established a school for the deaf to learn and Alexander also helped the deaf learn. He also inspired…

Design and Simulation of Microcantilevers for Sensing Applications Abstract- MEMS is the integration of active and passive elements on a single chip, which combine electronics, electrical as well as mechanical elements to use in sensing and actuation. MEMS technology used in sensing applications with use of basic mechanical elements such as microcantilevers, beams, diaphragms, springs, gears and so on. In this research paper, microcantilevers are used as basic elements for design of Sensors.…

The main parts of a flashlight include: • Batteries: The source of power for the light bulb. • Switch: Allows the flow of electricity when on. When off, the circuit is broken and there is no flow of electricity. • Light bulb: The source of light in a flashlight. The light bulb can either be a tungsten filament or a light emitting diode (LED). When electricity flows through the tungsten filament or LED, they lit up, which produces light. • Contacts: A very thin piece of metal that is found…

“Just because something doesn’t do what you planned it to do doesn’t mean it’s useless.” (Edison) Thomas Alva Edison always had a creative mind, even as a child. He was able to find work at the age of 12 selling newspapers to passengers riding the Grand Trunk Railroad line. He used his access to convert one of the unused train cars into a makeshift lab, in which he performed various experiments. He promptly caused a chemical fire in the car, resulting in him being fired. While he was working…

What are the minority charge carriers in p-type semiconductor? Free electrons 29. Define generation and recombination of charge carriers. Generation of charge carriers is the process by which free electrons and holes are generated as pairs. Recombination of charge carriers is the process by which free electrons and holes are eliminated. 30. Define drift current. Drift…

2 Copper is a good conductor of electricity. Copper is good conductor of electricity because it contains free electrons. Copper has one free electron per atom. The free electron concentration in copper is 8.5 x 1028 per m3. The electrons start flowing as soon as the switch is closed. But the electrons themselves travel much more slowly. So how does the current come on everywhere as soon as the switch is closed? It is because the free electrons are already spread throughout the wire. As soon as…

Thomas Alva Edison was born on February 11, 1847 in Milan, Ohio. He was the last of 7 children. He moved to Michigan when he was 7 years old. As a child, he was extremely curious. He was so intrigued by things, that he once sat on a goose egg, just to see if it would hatch. He also set fire to a barn, to see what would happen. Although he was not well educated, he only completed 3 months of school, he was extremely smart and had the desire to learn. He was always very distracted and could never…

“ Worst. Idea. Ever.” of chapter 1 is telling us what we hear on the radio, watch on the TV, see on the newspaper is not really true. Some time we need to look deep inside and think deeper into it to find out the fact. As many a human believe that Edison is the one who invents the light bulb, but in the chapter 1 states “Humphrey Davy invented it forty-five years before Edison was even born”. I believe every one after reading this chapter will be surprise just like me. And we may be asking:…