Analysis of Tractors and Tractor Engineering Features

Analysis of Tractors and Tractor Engineering Features Which tractor will serve you best? Contrary to popular belief, tractors are used in much more than agricultural work. Tractors are used in mowing, land-clearing, landscaping, construction, excavation, and livestock and industrial applications. Tractors come in 2-wheel drives, equal and unequal 4-wheel drives; with different types of tires and horsepower; and multifunctional attachments. These factors influence the tractors capabilities and price. Classifications of tractors Tractors are classified on the basis of engine power and drive: 2-wheel drive tractors: are best for mowing level fields and traversing long distances. 4-wheel drive tractors: are suitable for attaching loaders, and have the traction to work well on unleveled surfaces. They have a large share in the small and medium-sized tractor market and better resale value. Small range tractors: have an engine of less than 25 hp (horsepower). They work best on lawns. Middle range tractors: have engines of 25-60 hp and perform well in commercial applications, nurseries, and farms. Heavy range tractors: have engines of 65 hp and higher. They are suitable for heavy work such as tilling and baling. Tractors of 200 hp are usually seen in large commercial farms. Important characteristics of tractors The cost and applicability of tractors depends on these characteristics: Tires: Tractors have pneumatic tires (for traction in loose muddy fields), industrial tires (for heavy loading and mowing), and turf tires (for minimizing surface damage). Cabs: Though costly, enclosed cabs protect operators from extreme climates. Air conditioned cabs consume 3-4 hp and are suitable for middle and heavy range tractors only. Transmissions: Tractors can have manual transmission or the more expensive clutch-free hydraulic transmission that uses up some horsepower. Attachments: Tractors can have attachments attached to the back and front such as rakes, spreaders, grapples and harrows. The number and type of attachments is directly proportional to the tractors cost and horsepower. Fuel: Tractors run on unleaded or diesel fuel, or grain. Safety features: Tractors are bulky machines. Lights and flashers provide safety on road. Latest models are equipped with an operator presence switch that turns off the engine in the operators absence. Rollover protection structures (ROP) protect the operator from getting crushed in a rollover accident. Types of tractor attachments Attachments lend greater functionality to tractors. Most attachments use the power of the tractors engine to work through a power take-off (PTO) drive shaft. Common attachments include: Backhoe: for digging precise holes. Mowers: come in various types: rough cut and brush mowers for heavy work finish mowers for detailed work bush mowers to mow acreage side mowers to mow side ditches on roads Box blades: for scraping, leveling or grading soil. Buckets: for moving piles of rocks and soil. Plows and blowers: to move snow. Front-end loader: for leveling, carrying and loading. Services offered by tractor dealers Tractors are expensive and hardy machines that need constant maintenance. While many owners perform routine tasks such as replacing filters, changing oil, and greasing joints, dealers can also offer maintenance contracts for a small fee. In any case, dealers should provide a maintenance manual for the tractor and a basic demo of its functions. Dealers can offer financing options for purchasing tractors as they cost anywhere between $10,000 and $100,000. Attachments also cost a few thousands. A second hand tractor can be purchased at lower cost, but you should ensure it is in working order and comes with at least 1-2 months warranty. Some dealers may also have imported tractors that are sold semi-legally at cheap prices. However, spare parts are a major problem with these tractors and safety features may not meet standards. The dealer should have sufficient workforce to pick and repair your tractor in case of a fault or breakdown. They should have the necessary parts and attachments as and when required. You should compare quotes from multiple vendors before making your choice. Price and after-sale services are equally important.

Wind Power in the United States Essay -- The Physics of Wind Turbines

I personally do not like windy days. However, wind could be helping us more than we realize. We could be using the wind to produce energy. This is what wind turbines do and now I will be researching them to determine the physics involved with them and how they work, their history, along with some statistics from the United States. Then I will go in-depth for the wind turbines of Texas, Washington, and Kansas and compare them. The Physics of Wind Turbines There is physics involved in these wind turbines as they change wind into mechanical energy and then into electricity. The energy produced depends on the volume of the air, the density, and the wind speed. The mass per unit time is the mass times the density times the wind speed or m = mass, p = density, A = area, and v = wind speed; m = pAV. Because the function of the wind turbine is to transform the wind’s kinetic energy into electricity the equation for kinetic energy is needed; KE =  ½ mv2 or kinetic energy equals one half the mass times the velocity squared. Then, using substitution, the power in the wind depends on the density of the air, area swept out by rotors, and the cube of the velocity or  ½ pAV3. Using Betz’ law the theoretical energy model for extracting 59% of the energy is power = 16/27( ½ pAV3) . The power passing through or created by the wind power is  ½ pAv3. All the power cannot be captured though, because that would mean the wind had to be still, absolutely no wind, which is impossible when the wind starts the whole process. Thus, one needs to find the maximum theoretical power output. To find the power, take the kinetic energy in through the wind turbine minus the kinetic energy out. Then using three different areas one can find the constant rate of ... ...issued on 2009 Aug 11, cited 2010 Oct 3]. [about 5 paragraphs]. Available from: http://green.blogs.nytimes.com/2009/08/11/raising-wind-output-with-longer-blades/ American Wind Energy Association [Internet]. AWEA c 2009. U.S. Wind Energy Projects-Kansas [updated 2006 June 1, cited 2010 Oct 2]. [about 3 lines]. Available from: http://www.awea.org/projects/Projects.aspx?s=Kansas Unrhuh C, Leiker D. [Internet]. cJ.S. S.W. Aber. Kansas wind power. [last update 2009 Nov, cited 2010 Oct 3]. [about 1 paragraph]. Available from: http://www.geospectra.net/kite/ks_wind/ks_wind.htm McDermott M. [Internt]. TreeHugger.com:c 2010. Largest wind farm in Kansas. originally from Science and Technology [posted 2008 Oct 3, cited 2010 Oct 3]. [about 1 paragraph]. Available from: http://www.treehugger.com/files/2008/10/largest-wind-farm-kansas-built-by-italian-developer.php

Drawbacks of the Common Law System

Explain the drawbacks of the common law system in England and Wales. ‘Common law’ originated in England in the 11th century. Today in the United States of America, some common law principles from the original English Law are being applied.Alongside it is the branching body of Common Law which is in the process of being set as a part of stare decisis which itself is an abbreviation of the Latin phrase ‘stare decisis et non quieta movere’ which translates as ‘to stand by decisions and not to disturb settled matters’, whereby the judicial systems decisions and interpretation of statutory law provisions by judges, are becoming a part of the common law. Judges too do look to these decisions as a guideline, reference or as a necessary precedent to follow, whilst making their own decisions.Although advantages of the system have been significant in England and Wales, drawbacks of the system gradually came on par. As these decisions are based on past cas es, predictability of the outcome increased and people are more exposed to what should be expected, however so, with the element of predictability, absurdity on deciding cases may occur. In referring to a decided case, if there appears to be no change and the decision is followed again by a judge, a bad decision will eventually be perpetuated.And considering common law systems have been following precedents as a base, changes takes a long time to happen. In the meantime, a bad decision from a past case continues to be upheld. It became a major criticism of common law systems that it can be hard to locate the relevant principles due to the available volume of material. Common law which was based on the principle of binding precedent meant that judges must follow precedent even if they disagree with it.Judges too were not able to distinguish essentially similar cases although they were on grounds decision made would be inappropriate. Lord Denning too criticised the doctrine to stand b y what has been decided by saying, â€Å"if lawyers hold to their precedents too closely, forgetful of the fundamental principles of truth and justice which they should serve, they may find the whole edifice comes tumbling down about them. Just as the scientist seeks for truth, so the lawyer should seek for justice.Just as the scientist takes his instances and from them builds up his general propositions, so the lawyer should take his precedents and from them build up his general principles. Just as the propositions of the scientist fail to be modified when shown not to fit all instances, or even discarded when shown in error, so the principles of the lawyer should be modified when found to be unsuited to the times or discarded when found to work injustice. , which in other words meant accepting the decisions of old law leads to unfairness and injustice. Furthermore, when precedent appears absent the common law legal system will be bound to face difficulties in making judgements. D ifficulties will arise and flood various parties which include judges and those with intention to claim justice will be at lost with the unavailability of a decided precedent to refer to. This has been said on certain occasion to lead to a high degree of unpredictability based on illogical distinctions.

Pride and Prejudice is a British novel written by Jane...

Pride and Prejudice is a British novel written by Jane Austen. This book is one of the most cherished love stories in English Literature. Pride and Prejudice was written in the early 1800’s to replicate the relationships between men and women in Austen’s time. She portrayed Elizabeth, the second eldest of the Bennet daughters as fearless, independent, and more concerned about marrying for love than marrying for social status and stability. Elizabeth is able to still able to have the expectations of a woman without losing the ability to have her own opinion and strong state of mind. Austen created and highlighted one of the main characters, Elizabeth Bennet, to express the different morals she viewed, and how unalike she is from most of the†¦show more content†¦For example, Elizabeth married for love whereas Charlotte Lucas, another character, just married for money and stability. Elizabeth believes marriage should be all about love, equality, and respect. While society tells her that marriage should be based on social status and financial status. In the bible it says: â€Å"Keep your mind on the higher things, not on the things of earth† (Bible in Basic English, Col 3:2). This is a lot like Elizabeth and Charlotte. Elizabeth is more focused on what will happen in the long run, which in this verse is Heaven. On the other hand, Charlotte is focused on how much money her husband will have. In this verse it says to make your attention towards higher things. Mr. Collins proposes to Elizabeth, and she denies the first time. Elizabeth’s mother becomes angry because without the marriage of Elizabeth and Mr. Collins, the Bennet family will not be able to keep their estate. Elizabeth denies Mr. Collins because she says that stability is no reason to be committed to someone. She proclaims, â€Å"I could never make him happy, and he could never make me happy.† (Austen, Chapter 55) She uses this quote to illustrate the fact tha t marriage should not be based on financial wealth and social status. Pride and Prejudice is the story of how Elizabeth, and her true love Darcy, overcame all obstacles to find romantic happiness. Most women in Jane Austen’s time period focused on marrying a manShow MoreRelatedPride And Prejudice By Jane Austen Essay1769 Words   |  8 PagesPride and Prejudice is a novel written by Jane Austen. It was first published in 1813. Ignoring the fact that I have already read the book in high school, the novel tackles on very interesting issues, which makes itself just as interesting for a book report. The story mainly revolves around Elizabeth Bennet as she faces issues concerning manners, upbringings, education, morality, and marriage. 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