familiarization of electrical apparatus. Name Image Symbol Uses of functions Galvanometer A galvanometer is a very sensitive meter which is used to measure tiny currents‚ usually 1mA or less. Ammeter An ammeter is used to measure current. Voltmeter A voltmeter is used to measure voltage. Resistor (Fixed and Variable) Fixed Variable A resistor restricts the flow of current‚ for example to limit the current passing through an LED. A resistor is used with a capacitor in
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ELECTRICAL CONDUCTORS A conductor is an object or type of material which permits the flow of electric charges in one or more directions. For example‚ a wire is an electrical conductor that can carry electricity along its length. Physics All conductors contain electrical charges‚ which will move when an electric potential difference (measured in volts) is applied across separate points on the material. This flow of charge (measured in amperes) is what is meant by electric current. In most
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It is very obvious from the comments posted in this thread that the people driving the use of the RaspberryPi as a PLC training tool have not conducted any professional‚ electrical and electronic engineering research into the design criteria required for an educational PLC or are prepared to acknowledge the legally required European Union safety compliance to IEC61508 and IEC 611313. A PLC’s functional criterion is an industrial control device used to automate electrically driven machinery
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Electrical Cable Cross section is just a two-dimensional view of a slice through an object. An often asked question: How can you convert the diameter of a round wire d to the circle cross section surface or the cross-section area A (slice plane) to the cable diameter d? Resistance varies inversely with the cross-sectional area of a wire. | ------------------------------------------------- Top of Form | Wire diameter d | unit | | | Cross-sectional area A | unit2 | | |
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Introduction This experiment tests electrical conduction. Electrical conduction is the transportation of an electrical charge through a substance. This is done by the electrical charge/current being sent through the substance via electrons. These electrons carry the electrical current/charge throughout the substance’s length until another conductor is able to receive the electrons charge. Part B: Risk Assessment: During the construction of “the modified hurler‚ “
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Unit 5: Business Plan Submitted to Dr Ted Sun By Celia Tusiime Kakande SMC University Restaurant Business Plan Company Description OZ a Kampala based company will operate Aussie Plate Restaurant‚ a single unit‚ medium-size restaurant serving healthy‚ contemporary style food. The restaurant will be located at Plot 45 Ntinda Area‚ a Kampala city suburb. Mission To provide high quality local and fast foods in an exceptional environment. Vision To maintain
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Bar Business Plan - 5.0 Marketing Strategy and Implementation Article Index Bar Business Plan 2.0 Company Description 3.0 Products 4.0 Market Analysis 5.0 Marketing Strategy and Implementation 6.0 Organization and Management 7.0 Financial Plan All Pages 5.0 Marketing Strategy and Implementation The NB&G will position itself as the bar and grille of choice by providing top notch service‚ offering a vast selection of beverages‚ and providing both traditional bar fare as well as daily market specials
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security cameras‚ and the hotel’s kitchens and bars: drawing approximately 1000kVA from the national grid and directing it through hundreds of individual switches and control units built into one central console. I picked up my pencil- this was not an electrical engineering exam at school: instead of lounging at the beach with my friends‚ I had chosen to spend my summer at Specialised Power Systems (“SPS”)‚ designing and building Mr. Rowleys‘s switchboard. As the engineers and I gathered around and started
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Electrical Charges: Electrical charges come as plus or minus. Like charges repel‚ unlike charges attract. Electrons and protons have‚ to fantastic accuracy‚ equal and opposite charges. Quarks have 1/3 the electron charge but are never seen alone! In wires electrons do the moving to carry electrical current. In solutions or plasmas there can be positive charge carriers‚ ions or protons. Although the signal to tell electrons to move in wires travels at about 2/3 the speed of light
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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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