The speed of an asynchronous motor rotating field and thus its rotor speed depends on the number of pairs of poles in the stator field .the rotor speeds n are lower than the table values by the amount of the relevant slip speed ns. Motors are designed with up to three stators windings‚ which have different number of pairs of poles. They can therefore run at up to pairs of poles. They can be in any desired ratio to one another. A pole-changing switch is used to changing poles for the desires speed
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Case Analysis Report In August 2000‚ Ford Motor Company and Firestone Tire Company recalled 6.5 Million ATX and AT tires that had been installed on Ford’s Explorer model SUV. At the time‚ it appeared as though Ford and Firestone were doing the right thing. They had found out that the tread separated on Ford Explorers in states with intense heat‚ such as Florida and Texas. However‚ it later came to light that both Ford and Firestone had known about these problems earlier than 2000 and that Ford
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Strategy is the key to success. Tesla Motors has separated from the competition in the automobile industry. The question is how and why It all comes to the type of strategy the company has implemented and what makes them different form their competitors. In todays global economy having a unique strategy on how to market to customers is very important. The customer needs will always change due to changes in their environment. This is why it is important to develop a strategy that fits the needs of
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The analysis and choice of country markets for German companies producing spinning machines Criteria for assessing the prospects of a country market: 1. Market capacity (the volume of imports into the country); 2. The comparative competitive advantage (comparative share of imports); 3. The dynamics of market capacity. Table 1 Import-export matrix for spinning machines in 2002‚ EUR million Import | Export | The ranking list of importing countries | The ranking list of exporters
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Special electric machines have a large field of application and actual requirements for electromechanical systems clam new and very performing solutions. There are a lot of papers on this subject‚ but anytime is mandatory to do something else to help users to develop high level systems. Main intention of the authors for this paper is to present a modality to analyze and to design a new solution of electric machine only trough finite element method. Actually‚ the users are asking for very performing
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General Motors Company Group #2: Roberto Paternina‚ Luvy Garcia‚ Ruperto Granthon‚ Camilla Valdez‚ George Leal‚ Eric Reeves‚ and Rafael Franjul June 16‚ 2012 Introductory description of the business‚ its goals‚ and its markets General Motors Company is an American car manufacturing company that sold 9 million vehicles‚ delivered USD 135M in revenue and USD 6.1 M profit in FY11. The company was founded in Flint‚ Michigan more than 100 years ago. Today‚ General Motors is the
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A DC motor is a mechanically commutated electric motor powered from direct current (DC). The stator is stationary in space by definition and therefore so is its current. The current in the rotor is switched by the commutator to also be stationary in space. This is how the relative angle between the stator and rotor magnetic flux is maintained near 90 degrees‚ which generates the maximum torque. DC motors have a rotating armature winding but non-rotating armature magnetic field and a static field
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Washing Machine- The Helping Hands Laundering clothes manually involves the process of scrubbing and rinsing dry dirty clothes and other textiles. The entire process can be extremely tiring and time consuming. It can also lead to severe backaches for the washers. The electric washing machine has been a boon for housewives and house keepers as they have saved them not only a lot of time and effort from these this cumbersome chore but also contributed to their better health. The main parts of
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Introduction An automobile or motor car is a wheeled motor vehicle for transporting passengers; which also carries its own engine or motor. Most definitions of the term specify automobiles are designed to run primarily on roads‚ to have . seating for one to eight people‚ to typically have four wheels‚ and to be constructed principally for the transport of people rather than goods. Automobile comes via the French language‚ from the Greek auto [self] and mobiles [moving]; meaning a vehicle that
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ECNG2000 – Electromechanical Energy Conversion Tutorial 4 – DC Machine 1. Describe operation of DC machine (motor and generator) using illustrations. Specifically explain the purpose of: a. brushes d. armature winding b. split ring commutators e. effect of back emf (in operation) c. field winding 2. Draw the different configurations of DC machines a. shunt c. separately excited b. series 3. Develop‚ using Kirchhoff’s laws‚ equation for Ea (armature voltage) in both motoring and generating mode
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