affordable and reliable‚ have flexibility of control‚ and offer significant electrical energy savings through greatly reduced electric bills. They are used in a wide variety of applications for various reasons. For example‚ they are the most effective energy savers in pump and fan applications; they enhance process operations‚ particularly where flow control is involved. VFDs provide soft-start capabilities‚ which decrease electrical stresses and line voltage sags associated with full voltage motor start-ups
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Introduction to AC Machines Dr. Suad Ibrahim Shahl ELECTRICAL MACHINES II Lecturer: Dr. Suad Ibrahim Shahl Syllabus I. II. III. IV. V. VI. VII. Introduction to AC Machine Synchronous Generators Synchronous Motors Three-Phase Induction Machines Three-Phase Induction Motors Induction Generators Induction Regulators Recommended Textbook : 1) M.G.Say Alternating Current Machines Pitman Pub. 2) A.S. Langsdorf Theory of AC Machinery McGRAW-HILL Pub. 1 Introduction to AC Machines
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Wire Symbols Electrical Wire Conductor of electrical current Connected Wires Connected crossing Not Connected Wires Wires are not connected Switch Symbols and Relay Symbols SPST Toggle Switch Disconnects current when open SPDT Toggle Switch Selects between two connections Pushbutton Switch (N.O) Momentary switch - normally open Pushbutton Switch (N.C) Momentary switch - normally closed DIP Switch DIP switch is used for onboard configuration SPST Relay Relay open
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Basic Electronics Chapter 2 Basic Electrical Principles and the Functions of Components Figures in this course book are reproduced with the permission of the American Radio Relay League. This booklet was compiled by John P. Cross AB5OX PHYS 401 Physics of Ham Radio 25 Basic Electrical Principles • Conductors - keep loose grip on their electrons and allow electrons to move freely. Metals are usually good conductors. • Insulators - keep close hold of their electrons and do not
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Chapter 1 Questions 1. Identify some new features in the 2010 version of Excel. Some new features include sparklines and slicers‚ and improvements to PivotTables and other existing features can help you to discover patterns or trends in your data that can lead to more-informed decisions. 2. Why would you use conditional formatting? Conditional formatting features reflect graphically the values for salespersons and customers relatives to each other. It is used as a comparison tool such as in the
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learn Ms Excel. You will all agree that good working knowledge in Excel is one of the most important pre-requisites for corporate especially in the finance profile. While we are incorporating few portions of Excel in your main course curriculum‚ I feel you should spend some time to harness your skill there. I find that excel can be self-learnt in your own pace and convenience. I find excellent YouTube videos particularly Excelisfun channel as one of the best help available to learn Excel. We
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Microsoft Office ® Excel 2003 Guy Hart-Davis McGraw-Hill/Osborne New York Chicago San Francisco Lisbon London Madrid Mexico City Milan New Delhi San Juan Seoul Singapore Sydney Toronto McGraw-Hill/Osborne 2100 Powell Street‚ 10th Floor Emeryville‚ California 94608 U.S.A. To arrange bulk purchase discounts for sales promotions‚ premiums‚ or fund-raisers‚ please contact McGraw-Hill/Osborne at the above address. For information on translations or book distributors outside the U.S.A.‚ please
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Electrical circuit is a path which electrons from a voltage or current source flow. Electric current flows in a closed path called an electric circuit. The point where those electrons enter an electrical circuit is called the "source" of electrons. The point where the electrons leave an electrical circuit is called the "return" or "earth ground". The exit point is called the "return" because electrons always end up at the source when they complete the path of an electrical circuit. The part of an
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ELECTRICAL ENGINEER DESCRIPTION “Electrical engineers design‚ and evaluate the manufacture‚ testing‚ installation‚ operation‚ and maintenance of electrical and electronic components‚ equipment and systems.”1 Electrical engineers work with an array of equipment and machinery‚ such as transformers‚ switches‚ electrical appliances and types of generators‚ and are considered in fields involving communications‚ radar‚ aerospace guidance‚ medical and biomedical research
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1. INTRODUCTION Electrical substation for distribution system is the main supply to convert the high voltage (HV) to low voltage (LV) and the place where load are distributed to the consumers. In Malaysia‚ Tenaga Nasional Berhad Distribution (TNBD) used the 33/0.433kV‚ 22/0.433kV‚ 11/0.433kV and 6.6/0.433kV voltage system for the electrical system to supply for domestic consumer and industrial consumer such as factory which will supplied directly from Transmission Main Intakes (PMU)‚ Main Distribution
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