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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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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GROUP 4 JULY 26‚ 2013 EE 4101 ENGR. KENNETH F. FAJILAN Reluctance Motor Introduction A reluctance motor is a type of electric motor that induces non-permanent magnetic poles on the ferromagnetic rotor. Torque is generated through the phenomenon of magnetic reluctance. There are various types of reluctance motor: Synchronous reluctance Synchronous reluctance motors have an equal number of stator and rotor poles. The projections on the rotor are arranged to introduce internal flux “barriers“
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AC Motors vs DC Motors DC Motors Prof. Dr. M. Zahurul Haq zahurul@me.buet.ac.bd http://teacher.buet.ac.bd/zahurul/ Department of Mechanical Engineering Bangladesh University of Engineering & Technology e316.eps ME 475: Mechatronics AC motors are smaller in size‚ reliable and less costly. AC motors run at fixed speed set by the line frequency. Easy speed‚ torque & direction controls in DC motors. DC motors are generally operate at lower voltages which makes these easier to interface with control
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1. PRODUCT MIX AT MANVI MOTORS The Manvi Motors of Malaysia produces cars under an agreement with Suzuki of Japan and trucks under an agreement with General Motors of the USA. The company was established in 1972 and now employs approximately 1000 people and can generally produce an average of 25 cars and trucks per day. Capital investment constraints have limited the nature of Manvi’s manufacturing facilities. Consequently‚ it is not able to manufacture many of the items required for the assembly
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General Motors Leadership is one of the most important aspects and challenges a company faces which can influence the effectiveness or an organization. An organization counts on good leadership skills to direct and lead a company into performing and motivating to achieve attainable goals and produce income. According to the General Motors (2007) website‚ they are proud of their group affiliation of the Affinity Group which allows employees and management to link up and produce effective ideas
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Steps in recognizing genuine BSP banknotes Version 1 and 2 1. Paper - the genuine note is printed on a special kind of paper which is rough when we run our fingers through it. 2. Watermark - is the shadow of the portrait appearing on the face of the note. 3. Security fibers - embedded red and blue visible fibers are scattered at random on both surfaces of the note. 4. Embedded security thread - special thread vertically implanted off center of the face of the note. It can easily be seen when
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 PROJECT MOTOR INSURANCE December 2004 Contents Chapter 1 Introduction Chapter 2 Merchandise insurance- cargo insurance introduction types object insured amount insurance premium liability‚compensation risk coverage exclusions Chapter 3 Carrier’s liability insurance general presentation and provisions carrier liability insurance- CMR- Romania types object insured amount insurance
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SWOT analysis of General Motors This is a General Motors Company SWOT analysis for 2013. For more information on how to do SWOT analysis please refer to our article. Company background General Motors Company (GM) is a corporate that designs‚ builds and sells cars and trucks. Name Industries served Geographic areas served Headquarters Current CEO Revenue Profit Employees Main Competitors General Motors Company Automotive Worldwide U.S. Daniel Akerson $ 152.3 billion (2012) $ 4.9 billion (2012)
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another country it does business in. 2. Governance and compliance would affect Tata Motors by enacting the company to manage its financial and technological information set to a certain standard. The organization is subject to many regulations governing data retention‚ confidential information‚ financial accountability‚ and recovery from disasters. 3. The different global system development issues Tata Motors may encounter as it deploys its Nano are difficulties when first setting up the global
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