Short Circuit — When one part of an electric circuit comes in contact with another part of the same circuit, diverting the flow of current from its desired path. Clipping is a handy way to collect important slides you want to go back to later. 1616 P St NW, Suite 600 Washington DC, 20036 202.328.5000. Volt-Ampere (VA) — A unit of measure of apparent power. Polarity — A collective term applied to the positive (+) and negative ( - ) ends of a magnet or electrical mechanism such as a coil or battery. Resistor — A device usually made of wire or carbon which presents a resistance to current flow. The total amount of electricity used by all consumers on a grid is known as the load or the demand. Ammeter — An instrument for measuring the flow of electrical current in amperes. References: Wikipedia, EPQ #138 - Basic Electrical Terms and Definitions, NFPA-70, IEEE. Self Induction — Voltage which occurs in a coil when there is a change of current. This is also the reason why magnetic devices such as magnetic screwdrivers are not advisable to use during repair. Basic of electrical 1. This explainer was created to accompany other electricity-related explainers; it includes definitions of some of the central terms related to the electric grid and the power industry. TO As of this date, Scribd will manage your SlideShare account and any content you may have on SlideShare, and Scribd's General Terms of Use and Privacy Policy will apply. See Frequency. Ground — The reference point in an electrical circuit from which voltages are measured, a common return path for electric current, or a direct physical connection to the Earth. An overview of how electrification can reduce emissions, from the feasibility of electrifying different technologies to the policy options for encouraging economy-wide electrification. You can change your ad preferences anytime. Basic Electrical Engineering By T.K.Nagasarkar and M.S. If you wish to opt out, please close your SlideShare account. It is obtained by multiplying the current (in amperes) by the time (in hours) during which current flows. Semiconductor — A solid substance that has a conductivity between that of an insulator and that of most metals, either due to the addition of an impurity or because of temperature effects. Voltage is the … The connecting lines are used to connect the symbols. Electron theory — The theory which explains the nature of electricity and the exchange of "free" electrons between atoms of a conductor. MODULE OUTCOMES Introduction to Economics Supply and demand Short term versus long term Markets in action Microeconomics & macroeconomics Macroeconomics theory Economic growth & development Labour market Examination 3. Equal to 1000 Watt-hours. Rotor — The rotating part of an electrical machine such as a generator, motor, or alternator. Load banks are normally used for these tests as part of the commissioning process for electrical power systems. Basics of the electric grid and the power industry, explained. Volt (V) — A unit measure of voltage. Corona — A corona discharge is an electrical discharge brought on by the ionization of a fluid such as air surrounding a conductor that is electrically charged. — Mar 3, 2020, An overview of the different types of US electricity markets, how they are regulated, and implications for the future given ongoing changes in the electricity sector, Testimony and Public Comments So if you know two of the three characteristics, your can calculate the third one. The amount of current flowing in a circuit can be measured in ampere (I). Apparent power is the product of the rms voltage and the rms current.
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