Basic Electrical Components Essay Example for Free

Basic Electrical Components Essay Electrical and What it is The work of an Automotive Service Technician also known as a Mechanic has changed from normal mechanical repair to a high knowledge and very technical job. Today, integrated electronic systems and complex computers run and maintain vehicles. They also measure their performance while on the road and can adjust to certain conditions. Technicians must have a good base of knowledge about how vehicles components work and interact, as well as the capability to work with electronic diagnostic equipment and computer based vehicles. The most important system of your vehicle would definitely be the electrical system; the electrical system maintains almost everything in you car; from climate control to just adjusting your seat. There are many components to an electrical circuit that many people don’t know of. There are tons of different switching devices, protection devices, moving devices and plain old ingenious devices that seem to not even be possible. The car industry has really turned to upgrading there vehicles with more electrical devices to make the driver more comfortable when operating this brilliant machine. The most updated electrical device on a vehicle that I can think of is the Tire Pressure Monitoring System (TPMS), which actually measures a wireless sensor that is installed in your tire to let you know if your tire pressures are off. The first thing that I would like to do is explain what electricity is in an automobile. Electricity is the worlds most widely used source if energy. Electricity is the flow of electrons through a conductor to eventually be used to supply a load of some sort. The electrons flow from positive to negative. In order to understand how an electric charge moves from one atom to another, you need to learn a little about atoms. Everything that surrounds us is made of atoms; every piece of grass, every plant, every animal. The human body is made up of a great amount of atoms. Air and water are made if atoms too. Atoms are the building block of the universe and without them there would be nothing. Atoms are so small that millions of them would fit on the head of a pin. Atoms are created by even smaller elements. The center of an atom is called the nucleus. The nucleus is made of particles called protons and neutrons. The protons and neutrons are extremely tiny, but electrons are much smaller. Electrons also rotate around the nucleus in there orbit a good distance from the nucleus. The proton is the positive charge and the electrons have the negative charge. These protons and electrons are rotating around the neutron in there orbit. These electrons can be bumped and moved out of their orbits. Applying a force can make the electrons move from one atom to another. These moving electrons are electricity. There are a few types of measurements to electricity that you will have to know. The first measurement that almost everyone has heard of is voltage. Voltage is the amount of pressure applied to push the electrons in the circuit. The second measurement is amperes also known as amps. Amps are the amount of current flowing through the circuit. For example; think of a regular neighborhood street. It is just a small street that is normally a low speed for vehicles, if we were to measure the speed in witch the cars are going we would get a small ampere reading maybe even milliamps. Now if we were to look at a sky view of a fast speed highway with more lanes you can see the amount of cars passing through is faster. That would be a high amount of amps. The last measurement of electricity that we use on cars today is resistance. Resistance is a property that slows the electrons. It is measured in Ohms the thing that resists a circuit is the load like a light bulb. The light bulb slows the electrons in the filament witch then creates heat, once heat is created then the gas inside the bulb glows. There is a part that is used inside cars called a resistor in a electrical circuit and what it does is slows the current flow in the circuit to make whatever load you have move slower. For example a variable resistor is used for the dash lights, you can control how much current is flowing through that circuit to dim the lights. So how does a battery work? A battery doesn’t make electrons; it holds them like a storage tank. A battery is made of two different metals that are opposite of each other and a chemical solution (Battery acid) that lets electrons flow through it. Electrons inside the battery are stationary at the negative terminal until a circuit is completed on the outside of the terminals. Once the circuit is completed the electrons pass from the negative plate to the positive plate and out the positive terminal. Once the electrons are at the positive terminal they pass through the circuit, used up by the load (for example a light bulb) and completed at the negative terminal which then goes to the negative plate. Once the circuit is opened the electrons are stationary at the plates until the circuit starts again. A battery is measured by amps; how fast current can flow through it and how much load it can take

Disability Essay -- essays research papers

In today’s society men have an attraction towards skinny women. The most gorgeous super models are thin and when other girls look at them, they get jealous. Many girls see this, and view themselves as being overweight and have a complex and a desire, which is to be skinny, this disease is called Anorexia. Anorexia is a disease, which affects mostly women and sometimes men. Anorexia is when you think you are fat, and you deprive yourself of food in order to be skinny. They see themselves as being fat and want to strive to be better than the "norm", and by that, being as skinny as possible. The glamorous women are skinny and we see this everywhere in movies, fashion shows, television, magazines etc†¦ Lennard Davis describes normalcy as "Each of us endeavors to be normal or else deliberates tries to avoid that state". (p47 Davis) We humans do everything by comparison, whether it be comparisons between cars, weight, looks, money, and pretty much anything else you can think of. Mostly all us strive to be better than "normal". Anorexia is a disease, which exists when a person has a goal, a goal to look better than anyone else does. Anorexia in itself is a disability because they are unable to function like a normal person should. Their bodies physically deteriorate and they have a complex that is practically incurable. Anorexia physically ruins your skin because you are not consuming any oils and the skin dries out. With prolong Anorexia, females are prone to losing their ability to give birth because of malnutrition. Mentally it kills you because all you think about is how you look, and looks aren’t that important in comparison to your personality. It is called the incurable disease because once someone has this complex they can never really let they eat a fatty food, or ever see them even a pound heavier than they are. When my sister was Anorexic, her doctor asked her, "What would you do if I forced you to eat a Burger Kingâ„ ¢ french fry?" She responded "I’d kill myself". At one point she weighed 97 pounds, and was 5 feet 10 inches tall. My sister fortunately has technically been cured because she eats normally but she still watches what she eats extremely carefully. "Any bell curve will always have at its extremities those characteristics that deviate from the norm. So, with the concept of the norm come... ...are over weight and starve themselves. Society categorizes people in basically two groups, pretty and ugly. Although I do not agree with this, many people are rude to many people who are over weight. If you go to a school where the average girl weighs 160lbs and you weigh 140lbs you may be placed in a category with the "pretty" group. On the other hand if the situation is reversed and the average girl weighs 115lbs, and you weigh 120lbs you may be in the "ugly" group which causes many people to become self conscious and go anorexic. In my sisters case she used to hang out with a group of girls who were very pretty and she had a complex and wanted to look better than the rest of them. Her way was starvation, and once she got to her best looking stage, the "ideal" point, she kept on starving herself leading to detrimental consequences. Many people have many different ideas about anorexia and how it is trying to be more like the "norm" by removing a stigma of being overweight, like in my sisters case except she was never really overweight. Ideology plays a big role in this as well because they never get to their ideal state causing problems.

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Don't drop from six to fire-day delivery; go the other way' (Source A). Adding new services to the postal service can increase numbers of clients and also money. Some may think the USPS will lose money but answer this question, â€Å"who would want poor mail service? † no one, that is why USPS should ass effort to improve experience for the customers. â€Å"It seems counterintuitive to add service when you're losing money, but people have less that in the system precisely because of spotty service†(Source A).Including finer service will increase new clients and money. Canceling delivery days on Saturdays is thought to be a good strategy to save money for the USPS. â€Å"Eliminating Saturday mail delivery would save $40 billion over a decade† (Source F). This sentence displays that improving mail services with strategic procedures will boost up financially the USPS. Mimi don't need a full service post office every few blocks in New York, for example. Some centers could be for letters only, others for packages.That way you cut down on staff size and service required to and from each. † USPS not hiring people is a good strategy to save money while still delivering mail to its members. Great strategies will help USPS own budget while having satisfying the customers. Instead of cutting back service and losing money, USPS updating new guidelines will increase mail services. Eliminating mail on certain days will save money and at the same time deliver great service to the customer.

Racism in America Continues - 733 Words

Since the downfall of the Black Panther party and the assassination of many Black leaders such as Malcolm X and Dr. Martin Luther King, Black progressive movements have ceased. The volume of racist comments and images have not reformed. Blacks continue to be undervalued in society. Not much has changed when it comes to social justice. Hate crimes against Blacks continue to go unpunished. America has evidently regressed when it comes to justice for Black/African Americans. One might ask; how do we know that racism hasnt ended? The evidence is obvious. â€Å"Emmett Till, who was 14 years old in the summer of 1955 when he walked into a local grocery store in Money, Miss., to buy gum. He was later roused from bed, beaten brutally, and shot by a group of white men who later dumped his body in a nearby river. They claimed he had stepped out of his place by flirting with a young white woman, the wife of the stores owner. The second boy is Trayvon Martin, who was 17 years old late last winter when he walked into a 7-Eleven near a gated community in Sanford, Fla., to buy Skittles and an iced tea. He was later shot to death at close range by a mixed-race man, who claimed Martin had behaved suspiciously and seemed out of place (Anderson)†. Tills story strikes overbearing resemblance to the more recent case of Trayvon Martin. Although these cases took place six decades apart they both ended the same, without any justice for the young Black boys. Since the slaughter of Emmett Till in theShow MoreRelatedRacism And The Pursuit Of Happiness Essay1547 Words   |  7 PagesThroughout the history of America, racism has been a major issue. The matter of racism has created a divide amongst many Americans and that divide continues to exist to this day. The United States has always taken pride in being recognized as the melting pot of the world. 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