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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Comparative Issues on International Management Tata “Nano”: The People’s Car INTRODUCTION The Indian company called Tata Motors manufactures the cheapest car in the world (Said‚ 2012). This caught the attention of the consumers in India especially those that earned an average income in the country. This four-wheeled drive vehicle replaces the motorcycle and scooters due to its safety and convenience. India’s "People’s Car" will be a "safe‚ affordable‚ all weather
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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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ELECTRIC MOTOR CONTROLS Once the proper motor is selected‚ understanding the many various control devices available and their uses and limitations becomes an important part related to reliable operation and protection of the motor and the personnel using the motor. Motor Control Topics There are four major motor control topics or categories to consider. Each of these has several subcategories and sometimes the subcategories overlap to some extent. Certain pieces of motor control equipment can accomplish
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Problem Definition John Bridges‚ the chief electrical engineer of Hamilton Oil Company‚ has concluded through motor testing that DMC competitors Spartan Motors and the Universal Motor Company of Canada offer the first and second choice motors on the market‚ respectively. DMC’s position as the third choice could prove quite detrimental to its market share because Hamilton is the largest active oil company in Canada‚ operating over 30% of producing wells‚ and Bridges is extremely influential in
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EXPLAINING THE BASICS OF MOTION MN1205 TABLE OF CONTENTS TYPES OF MOTORS . . . . . . . . . . . . . . 3 OPEN LOOP/CLOSED LOOP . . . . . 9 WHAT IS A SERVO . . . . . . . . . . . . . . 11 COMPENSATION . . . . . . . . . . . . . . . 13 TYPES OF CONTROLS . . . . . . . . . . . 15 TYPES OF FEEDBACK DEVICES . 17 TYPES OF ACTUATORS . . . . . . . . . . 22 Page 2 Servo Control Facts TYPES OF MOTORS The direct current (DC) motor is one of the first machines devised to convert electrical energy to
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SISTEMAS DC Motors Catedrático: Ing. Gustavo Mendoza Leal Alumno: Alfredo Valdés Cárdenas Introduction A DC motor is a type of electrical machine that converts direct current into mechanical power by means of a magnetic field. DC motors are widely used in field applications because of their many advantages over AC motors such as speed control‚ high starting torque‚ quick starting‚ stopping‚ reverse and acceleration and free from harmonics found in AC. Applications of DC motors include but
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------------------------------------------------- Tata Nano From Wikipedia‚ the free encyclopedia Tata Nano | | Manufacturer | Tata Motors | Also called | one-lakh car | Production | 2008–present | Assembly | Sanand Plant‚ Sanand‚ Gujarat‚ India[1] | Class | City car | Body style | 4-door one-box | Layout | RR layout | Engine | 2 cylinder SOHC petrol Bosch multi-point fuel injection (single injector) allaluminium 624 cc (38 cu in) | Transmission | 4 speed synchromesh with overdrive in
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PROFILE Inception Tata Motors Limited is India ’s largest automobile company‚ with revenues of Rs. 24‚000 crores (USD 5.5 billion) in 2005-06. By far it is the leader in commercial vehicles in each segment. It is also the second largest in the passenger vehicles market with winning products in the compact‚ midsize car and utility vehicle segments. The company is the world ’s fifth largest medium and heavy commercial vehicle manufacturer. Established in 1945‚ Tata Motors ’ presence indeed cuts
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