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
Premium Electric motor
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“
Premium Electric motor
Yamaha Motor Objectives In an effort to satisfy its loyal customers‚ Yamaha Motor Philippines‚ Inc. launches its service campaign‚ dubbed as the "Yamaha At Ur Service". Our campaign’s objectives are as follows: 1. To provide periodic and preventive maintenance to Yamaha customers‚ in order to lengthen the motorcycle’s life‚ as well as to make it safer for road use. 2. Promote YAMALUBE to Yamaha motorcycle owners. Changing the motorcycle lifestyle in the Philippines is one
Premium Philippines Tram accident Traffic collision
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
Premium Electric motor
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
Premium Electric motor Electrical engineering Circuit breaker
“Financial Reporting Problem” By Yansel Padilla General Motor (GM) provides their records assets in their yearly statement in which they provide to the public in December before the end of the year. Some of the assets mentioned on their balance sheet are in sequence of liquidity to make sure that the investors can see how much money is available in case they require the capital for growth or debts. It is extremely important for the administration to be conscious at all times of the business asset
Premium Generally Accepted Accounting Principles Balance sheet Asset
Contingency planning ("always have a Plan B") will help small business owners avoid many complex problems. But when it comes to commercial loans and commercial mortgages‚ working capital strategies often fail to include adequate attention to contingency plans that anticipate what can go wrong with business financing. One of the most effective and entertaining portrayals of contingency planning is a movie called "Rare Birds". This movie stars William Hurt and includes variations of the line‚ "Always
Premium Management Plan Project management
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
Premium Electric motor Magnetic field Electromagnetism
ultrasonic motor INTRODUCTION All of us know that motor is a machine which produces or imparts motion‚ or in detail it is an arrangement of coils and magnets that converts electric energy into mechanical energy and ultrasonic motors are the next generation motors. In 1980‚the world’s first ultrasonic motor was invented which utilizes the piezoelectric effect in the ultrasonic frequency range to provide its motive force resulting in a motor with unusually good low speed‚ high torque
Premium Electric motor Wave Magnetic field
and growth of the company over time (e.g.‚ critical incidents) General Motors (GM) was founded in 1908. William C. Durant brought together 25 independent car companies to form one large corporation. Each company held its own identity as GM operated as central administration office for the 25 divisions. Due to high cost in manufacturing of automobiles‚ GM was only able to target wealthy customers who could afford cars. Then Henry Ford‚ owner and founder of Ford Motor Company‚ revolutionizes the
Premium General Motors Ford Motor Company Automotive industry