1 HSC PHYSICS > MOTORS AND GENERATORS| AC & DC Gather secondary information to discuss the advantages and disadvantages of AC and DC generators and relate these to their use. AC generators Advantages The slip rings of an AC generator have a continuous surface that allows the brushes to remain in contact with the ring’s surface. Thus the brushes in an AC generator do not wear out as fast as in a DC generator as they do not create an electric short circuit every half-turn. Therefore
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ADVANTAGES AND DISADVANTAGES OF MOBILE PHONES ADVANTAGES AND DISADVANTAGES OF MOBILE PHONES Mobile phones are used all over the world for different purposes. In this essay‚ we will be looking at the advantages and disadvantages of using mobile phones. Dr Martin Cooper is considered the inventor of the first portable handset and the first person to make a call on a portable cell phone‚ in April 1973. This portable phone had numerous features never seen before. It revolutionised communication
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ADVANTAGES AND DISADVANTAGES OF PRIVATISATION Contents 1.0 INTRODUCTION 1 2.0 ADVANTAGES OF PUBLIC SECTOR PRIVATISATION 2 2.1 Improving Efficiencies 2 2.2 Reduction in Government Cost and Spending 3 2.3 Focusing on Core Competences 3 2.4 Streamlining Businesses to Allow Productive Job Creations 4 2.5 Obtaining Goal Congruences 4 2.6 Effective Utilization of Taxpayers’ Money 5 2.7 Generate Income Tax Revenue 5 2.8 Improving Government Financing 6 2.9 Reorganisation or Restructuring
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Advantages and Disadvantages of Performance Appraisals There seems to be an ongoing debate as to the value of doing employee performance appraisals. Anyone who has given or received a performance appraisal could argue vehemently as to the effectiveness and sensibility of doing them. So what is a performance appraisal? A performance appraisal is an evaluation of job performance over a period of time. It is basically an annual report card on an employee and how they performed over the prior
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This system is flexible for those customers who plan to travel and can buy airlines ticket with the cheap prices. Otherwise‚ customers also can choose the suitable and comfortable that seat with friends or family. This system will show that customers can choose either seat in first‚ business or economy seat; it can help
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James Davis Advantages and Disadvantages of E-commerce Bus 107 Debra Wilson November 22‚ 2010 Abstract In today’s economy‚ business moves at a rapid pace and shows no sign of slowing down. Many of the revolutionary changes that have taken place and supplied this economic engine with fuel are due to electronic commerce. The introduction of the computer into the workplace has brought about manifold changes and seemingly unlimited possibilities for merchants. This new technology offers many
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ADOBE PAGEMAKER 7.0 Application ReadMe for Windows® and Macintosh Editions This document includes supplementary or last minute information not covered in Adobe® PageMaker® 7.0 documentation or online help. It contains tips‚ known issues‚ and limitations you need to know to successfully use PageMaker 7.0 software and to exercise new functionality. For help installing PageMaker 7.0‚ review the How_to_Install.wri (Windows) and How_to_Install.txt (Macintosh) documents available on the PageMaker
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Nowadays information is accessible to almost everyone in this world. We can exchange ideas and broaden our horizon with the help of the means of communication & Media such as comics‚ books‚ radio‚ television‚ film or theatre. However‚ I believe not all these provide good quality information and I will try to analyze them. First of all‚ I would like to compare two ways of broadcasting information‚ namely TV and books. In my opinion‚ books are much more useful than Tv is and I believe there are
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Virtually any medium can be used for advertising. Commercial advertising media can include wall paintings‚ billboards‚ street furniture components‚ printed flyers and rack cards‚ radio‚ cinema and television adverts‚ web banners‚ mobile telephone screens‚ shopping carts‚ web popups‚ skywriting‚ bus stop benches‚ human billboards‚ magazines‚ newspapers‚ town criers‚ sides of buses‚ banners attached to or sides of airplanes ("logojets")‚ in-flight advertisements on seatback tray tables or overhead
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The computer is one of the most important inventions in the 20th century‚ which has changed our lives since it was first introduced. It is undeniable to say that the computer has resulted in both positive and negative effects which must be addressed accordingly. To begin with‚ the computer has contributed to our lives in many beneficial ways. The main use of computers is to help us store and organize information even tons of files within hard disk drives. Thanks to the advancement in technology
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