Chapter (11) Synchronous Motors Introduction It may be recalled that a d.c. generator can be run as a d.c. motor. In like manner‚ an alternator may operate as a motor by connecting its armature winding to a 3-phase supply. It is then called a synchronous motor. As the name implies‚ a synchronous motor runs at synchronous speed (Ns = 120f/P) i.e.‚ in synchronism with the revolving field produced by the 3-phase supply. The speed of rotation is‚ therefore‚ tied to the frequency of the source. Since
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RESEARCH AT BITS 2009 Birla Institute of Technology & Science Pilani (Rajasthan) - 333031 January 2010 Appendix ‗L‘: Ref. BG Agenda Item No.63.11 Appendix ‗E‘: Ref. GB Agenda Item No. 49.07 RESEARCH AT BITS 2009 Birla Institute of Technology & Science Pilani (Rajasthan) - 333031 January 2010 PREFACE Research is an integral and important part of any higher education system. BITS‚ Pilani actively promotes research among its staff and students. In addition to basic research
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Table of Contents Chapter1: Tata Steel All About Tata Steel.......…………………………………………………………………03 Origin and Growth………..……………………………..………………………………05 Acquisitions……….………..……………………………………………………………07 Study Of Various Programmes…………………………………………………………09 Awards and Recognition……...…………………………………………………………12 Chapter 2: Productivity Vs Employee Morale Employee Engagement………………………………………………………………...14 Employee Retention……………………………………………………………………...16 Quality Work Life ……………………………...…………………
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EPHE 380 – Motor Control Final Exam Ian Haig V00711512 Scenario: Walking down a 45 degree slope with a surfboard under my left arm and a large mountaineering backpack on my back. I was walking down the trail to Sombrio Beach which is about a 1.5k hike down a steep trail to the ocean. I had a surfboard under my right arm‚ an axe in my left hand‚ and a large 40 litre hiking backpack fully loaded with supplies on my back. About half way down there is a left turn in the trail which has a declining
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READ MOREBrushless DC Motors are an important class of highly efficient electric motors. They are most frequently used in electric vehicles because of their high efficiency and high power density. They are also present in the small DC fans used in power supplies and CPU coolers. In order to discuss the Brushless DC Motor it is important to first have a basic understanding of the more common Brushed DC Motor which is present in many household items. The brushed DC motor consists of a rotor (the
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2.1 Motors use the effect of forces on current-carrying conductors in magnetic fields 2.1.1 The motor effect The motor effect is where a force acts on a current-carrying conductor in a magnetic field. The right hand palm rule is used to find certain properties: fingers point to magnetic field‚ thumb points in DC direction and palm points to direction of the force. 2.1.2 Factors affecting the force acting on the current-carrying conductor Forces are experienced by the electrons in the conductor
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Rich Manufacturing Saint Leo University MBA 540 Sep 8‚ 2011 Why do many firms use cost-plus pricing for supply contracts? Firms use cost-plus pricing in order to cover their operating costs. Cost-plus means they can increase the price to their customers with whom they have contracts when the operating costs rise. Operating costs can rise for many reasons and cost-plus pricing allows firms the flexibility to manage operating costs. This flexibility is often needed when the price
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Design of Induction Motors Introduction: Induction motors are the ac motors which are employed as the prime movers in most of the industries. Such motors are widely used in industrial applications from small workshops to large industries. These motors are employed in applications such as centrifugal pumps‚ conveyers‚ compressors crushers‚ and drilling machines etc. Constructional Details: Similar to DC machines an induction motor consists of a stationary member called stator and a rotating
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Problem: Hedging using Foreign Currency Derivatives problem: Scout Finch is the Chief Financial Officer [CFO] of Dayton Manufacturing‚ a U.S. based manufacturer of gas turbine equipment. She has just concluded negotiations for the sale of a turbine generator to Crown‚ a British firm for One million pounds. This single sale is quite large in relation to Dayton’s present business. Dayton has no other current foreign customers‚ so the currency risk of this sale is of particular concern. The sale is
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quality operation as a whole. In order to study the contributions of TQM‚ take a medium-size manufacturing as an example‚ what should a quality manager do to improve the overall performance? In this article‚ playing a role of Quality Manager‚ I will propose my recommendations based on three main points: understand quality and improvement‚ understand the system and draw up a total quality management strategy. 1. Understand quality and improvement. There is no common definition of quality‚ thus there
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