This document discusses power system fundamentals and the per-unit system used for power system analysis. It begins with an introduction to power systems and covers topics like synchronous machines, transmission lines, power flow, and stability. It then describes the per-unit system for expressing voltages, currents, powers and impedances on a common base. Examples are provided for calculating per-unit values and transforming between bases. The per-unit equivalent circuits are developed for one-phase circuits and transformers.
Este documento describe diferentes tipos de puentes de medición, incluidos puentes de Wheatstone, puentes de Thompson-Kelvin, puentes dobles de Kelvin, puentes de Maxwell, puentes de Anderson, puentes de Hay, puentes de Schering y puentes de Wein. Explica cómo funciona cada puente, sus usos y aplicaciones en mediciones de resistencia, inductancia y capacitancia con corriente continua y alterna. También identifica posibles fuentes de error en las mediciones realizadas con estos puentes.
This document discusses Ampere's law and how it can be used to determine magnetic fields. It explains that Ampere's law relates the curl of the magnetic field to the current enclosed by an imaginary surface. The document provides examples of using Ampere's law to calculate magnetic fields inside and outside long straight wires, inside solenoids and toroids, and inside a long cylinder of current. Diagrams are included to illustrate solenoids and the magnetic field lines produced.
La potencia eléctrica se define como la velocidad a la que se consume la energía eléctrica y se mide en vatios. Existen diferentes tipos de potencia como la potencia activa, reactiva y aparente. La potencia activa es la potencia útil que realiza un trabajo, mientras que la reactiva y aparente no realizan trabajo útil. El triángulo de potencias ilustra gráficamente la relación entre estas diferentes potencias.
The document discusses the application of junction diodes as rectifiers. It describes how a rectifier converts alternating current into direct current by allowing current to flow in only one direction. It then discusses half-wave and full-wave rectifiers, explaining their construction, working principles, and how they produce pulsating direct current from an alternating current source. The document also provides details about solar cells, including their construction, working principle, materials used, advantages, disadvantages, and applications.
Network theorems for electrical engineeringKamil Hussain
The document discusses several circuit analysis theorems and methods. Kirchhoff's laws describe the conservation of charge and energy in circuits. Mesh analysis and nodal analysis are methods to solve circuits by assigning currents or voltages and setting up equations based on Kirchhoff's laws. The superposition theorem allows analyzing circuits with multiple sources by solving for each source independently and summing the results.
Ampere's circuital law and its applicationsHaseeb Memon
Let's consider a bar of magnetic material (iron) placed in a uniform magnetic field of strength H. Ampere's law relates the net magnetic field along a closed loop to the electric current passing through the loop. It states that the integral of the magnetic field density B around any closed path is equal to the current enclosed by the path multiplied by the permeability of the medium. Ampere's law has various applications such as determining the magnetic field around a long, straight current-carrying wire.
The document discusses key concepts related to electromagnetic induction including:
- Faraday's law states that the induced emf in a circuit is equal to the rate of change of magnetic flux through the circuit.
- Lenz's law describes the direction of induced current: it will flow in a direction to oppose the change in magnetic flux that created it.
- Self-induction occurs when a changing current in a circuit induces an opposing emf known as back emf. The property of self-inductance depends on geometry.
- RL circuits with both resistance and inductance experience an exponential rise or decay of current over time, depending on if the switch is closed or opened, with a characteristic time constant.
El documento describe el uso del puente de Wheatstone para medir resistencias desconocidas. Explica que el puente de Wheatstone es un circuito que utiliza el equilibrio entre brazos para medir resistencias. Describe cómo se usa un puente unifilar para determinar valores de resistencia mediante la medición de segmentos de alambre y una resistencia de referencia conocida. El objetivo es establecer el valor de resistencias de carbón desconocidas usando este método y comparar los resultados experimentales con cálculos teóricos.
Este documento trata sobre análisis de circuitos eléctricos de corriente alterna. Explica conceptos como impedancia, reactancia inductiva y capacitiva. También cubre temas como combinación de elementos, análisis de circuitos en estado estable usando números complejos y fasores, y conversión entre dominios del tiempo y la frecuencia.
This document contains a series of ConcepTests (conceptual multiple choice questions) from a physics textbook on circuits and electricity. The questions cover topics like series and parallel resistors, short circuits, Kirchhoff's rules, and Wheatstone bridges. For each question, the correct answer is provided along with a brief explanation of the reasoning.
Overcurrent and Distance Protection in DigSilent PowerFactoryAreeb Abdullah
This project involves the theoretical study of Protection Devices, Protection Schemes, Analysis of Control and Logical Blocks of relays being used in the project and practical implementation of both schemes in DigSilent PowerFactory.
An inductor is a passive electrical component that stores energy in a magnetic field when electric current passes through it. There are three main types: air core, ferromagnetic core, and variable inductors. Inductance is a measure of how much energy is stored in the magnetic field created by current flowing through the inductor. Self-inductance refers to the property of an inductor to store energy in its own magnetic field, while mutual inductance describes the magnetic field induced in one coil by another coil. Inductors are used in electric circuits, especially together with capacitors and resistors to create filters and for signal processing. They are also used in inductive sensors.
These slides describe Gauss's Law in electrostatics and its application to find out electric field due to point charge, uniformly charged spherical shell, and electric potential due to spherical shell.
Visit this link: https://phystudypoint.blogspot.com
Este documento explica conceptos básicos de electricidad como la ley de Ohm, las asociaciones de resistencias en serie, paralelo y mixto, y cálculos de circuitos eléctricos. Presenta tres ejemplos de circuitos eléctricos resueltos que ilustran cómo calcular la resistencia equivalente, la intensidad de corriente, las diferencias de potencial y las intensidades en cada resistor para circuitos serie, paralelo y mixto.
The document discusses Kirchhoff's laws of electrical circuits and their applications. Kirchhoff's first law, also known as the junction law, states that the algebraic sum of all currents meeting at a junction is zero. Kirchhoff's second law states that the algebraic sum of the potential differences (voltage drops) around any closed network plus the emfs in the circuit is zero. The document also explains Wheatstone bridge circuit, meter bridge method for determining unknown resistances, Kelvin's method for measuring galvanometer resistance using meter bridge, sources of errors and their minimization in these experiments, and the principle and applications of potentiometer for measuring emf and internal resistance of a cell.
This document provides an overview of key concepts in electric circuits including:
1. An electric circuit connects an energy source to an energy consuming device through conducting wires that allow electric charges to move. Electromotive force drives current, measured in amperes, through a circuit.
2. Ohm's law defines the relationship between voltage, current, and resistance. Resistance depends on the material's resistivity and dimensions. Components like resistors control current in circuits.
3. Electric power, measured in watts, is calculated by multiplying voltage by current. This relates to the energy delivered by a circuit over time for devices that function as resistors.
- Magnetic fields are produced by magnets and by moving electric charges like electric currents. A magnetic field has both a magnitude and direction at each point in space and can exert forces on moving charges.
- The magnetic force on a moving charged particle depends on the charge and current, magnetic field strength and direction, and the particle's velocity. Right hand rules can be used to determine the direction of the magnetic force.
- Charged particles moving in a magnetic field experience a force perpendicular to both their velocity and the magnetic field, causing them to travel in a circular path. The magnetic force does no work on charged particles.
The presentation describes resistance measurement through Voltmeter & Ammeter methods, DC bridges; Wheatstone bridge and Kelvin double bridge for low resistance.
Impact-driven Scrum Delivery at Scrum gathering Phoenix 2015Sara Lerén
This document discusses impact-driven delivery using impact mapping and management. Impact mapping is a framework that maps out the desired impact of a product on business metrics and user needs from the "why" through solutions. It provides a solid ground for design, planning, and quality assurance. The document outlines impact mapping components and provides exercises to practice defining metrics, users, and evaluating designs based on the impact map. It also discusses how impact management can be used to continuously evaluate hypotheses and solutions to deliver desired value and impact.
This document provides an overview of data quality and the fundamentals of ensuring data quality in an organization. It discusses the importance of data quality and outlines the key steps in the data quality pipeline including extract, clean, conform, and deliver. It also covers determining the system of record, cleaning data from multiple sources, prioritizing data quality goals, different types of data quality enforcement, and tracking and monitoring data quality failures. The document emphasizes that achieving high quality data requires planning, well-defined processes, and continuous monitoring.
This document discusses power system fundamentals and the per-unit system used for power system analysis. It begins with an introduction to power systems and covers topics like synchronous machines, transmission lines, power flow, and stability. It then describes the per-unit system for expressing voltages, currents, powers and impedances on a common base. Examples are provided for calculating per-unit values and transforming between bases. The per-unit equivalent circuits are developed for one-phase circuits and transformers.
Este documento describe diferentes tipos de puentes de medición, incluidos puentes de Wheatstone, puentes de Thompson-Kelvin, puentes dobles de Kelvin, puentes de Maxwell, puentes de Anderson, puentes de Hay, puentes de Schering y puentes de Wein. Explica cómo funciona cada puente, sus usos y aplicaciones en mediciones de resistencia, inductancia y capacitancia con corriente continua y alterna. También identifica posibles fuentes de error en las mediciones realizadas con estos puentes.
This document discusses Ampere's law and how it can be used to determine magnetic fields. It explains that Ampere's law relates the curl of the magnetic field to the current enclosed by an imaginary surface. The document provides examples of using Ampere's law to calculate magnetic fields inside and outside long straight wires, inside solenoids and toroids, and inside a long cylinder of current. Diagrams are included to illustrate solenoids and the magnetic field lines produced.
La potencia eléctrica se define como la velocidad a la que se consume la energía eléctrica y se mide en vatios. Existen diferentes tipos de potencia como la potencia activa, reactiva y aparente. La potencia activa es la potencia útil que realiza un trabajo, mientras que la reactiva y aparente no realizan trabajo útil. El triángulo de potencias ilustra gráficamente la relación entre estas diferentes potencias.
The document discusses the application of junction diodes as rectifiers. It describes how a rectifier converts alternating current into direct current by allowing current to flow in only one direction. It then discusses half-wave and full-wave rectifiers, explaining their construction, working principles, and how they produce pulsating direct current from an alternating current source. The document also provides details about solar cells, including their construction, working principle, materials used, advantages, disadvantages, and applications.
Network theorems for electrical engineeringKamil Hussain
The document discusses several circuit analysis theorems and methods. Kirchhoff's laws describe the conservation of charge and energy in circuits. Mesh analysis and nodal analysis are methods to solve circuits by assigning currents or voltages and setting up equations based on Kirchhoff's laws. The superposition theorem allows analyzing circuits with multiple sources by solving for each source independently and summing the results.
Ampere's circuital law and its applicationsHaseeb Memon
Let's consider a bar of magnetic material (iron) placed in a uniform magnetic field of strength H. Ampere's law relates the net magnetic field along a closed loop to the electric current passing through the loop. It states that the integral of the magnetic field density B around any closed path is equal to the current enclosed by the path multiplied by the permeability of the medium. Ampere's law has various applications such as determining the magnetic field around a long, straight current-carrying wire.
The document discusses key concepts related to electromagnetic induction including:
- Faraday's law states that the induced emf in a circuit is equal to the rate of change of magnetic flux through the circuit.
- Lenz's law describes the direction of induced current: it will flow in a direction to oppose the change in magnetic flux that created it.
- Self-induction occurs when a changing current in a circuit induces an opposing emf known as back emf. The property of self-inductance depends on geometry.
- RL circuits with both resistance and inductance experience an exponential rise or decay of current over time, depending on if the switch is closed or opened, with a characteristic time constant.
El documento describe el uso del puente de Wheatstone para medir resistencias desconocidas. Explica que el puente de Wheatstone es un circuito que utiliza el equilibrio entre brazos para medir resistencias. Describe cómo se usa un puente unifilar para determinar valores de resistencia mediante la medición de segmentos de alambre y una resistencia de referencia conocida. El objetivo es establecer el valor de resistencias de carbón desconocidas usando este método y comparar los resultados experimentales con cálculos teóricos.
Este documento trata sobre análisis de circuitos eléctricos de corriente alterna. Explica conceptos como impedancia, reactancia inductiva y capacitiva. También cubre temas como combinación de elementos, análisis de circuitos en estado estable usando números complejos y fasores, y conversión entre dominios del tiempo y la frecuencia.
This document contains a series of ConcepTests (conceptual multiple choice questions) from a physics textbook on circuits and electricity. The questions cover topics like series and parallel resistors, short circuits, Kirchhoff's rules, and Wheatstone bridges. For each question, the correct answer is provided along with a brief explanation of the reasoning.
Overcurrent and Distance Protection in DigSilent PowerFactoryAreeb Abdullah
This project involves the theoretical study of Protection Devices, Protection Schemes, Analysis of Control and Logical Blocks of relays being used in the project and practical implementation of both schemes in DigSilent PowerFactory.
An inductor is a passive electrical component that stores energy in a magnetic field when electric current passes through it. There are three main types: air core, ferromagnetic core, and variable inductors. Inductance is a measure of how much energy is stored in the magnetic field created by current flowing through the inductor. Self-inductance refers to the property of an inductor to store energy in its own magnetic field, while mutual inductance describes the magnetic field induced in one coil by another coil. Inductors are used in electric circuits, especially together with capacitors and resistors to create filters and for signal processing. They are also used in inductive sensors.
These slides describe Gauss's Law in electrostatics and its application to find out electric field due to point charge, uniformly charged spherical shell, and electric potential due to spherical shell.
Visit this link: https://phystudypoint.blogspot.com
Este documento explica conceptos básicos de electricidad como la ley de Ohm, las asociaciones de resistencias en serie, paralelo y mixto, y cálculos de circuitos eléctricos. Presenta tres ejemplos de circuitos eléctricos resueltos que ilustran cómo calcular la resistencia equivalente, la intensidad de corriente, las diferencias de potencial y las intensidades en cada resistor para circuitos serie, paralelo y mixto.
The document discusses Kirchhoff's laws of electrical circuits and their applications. Kirchhoff's first law, also known as the junction law, states that the algebraic sum of all currents meeting at a junction is zero. Kirchhoff's second law states that the algebraic sum of the potential differences (voltage drops) around any closed network plus the emfs in the circuit is zero. The document also explains Wheatstone bridge circuit, meter bridge method for determining unknown resistances, Kelvin's method for measuring galvanometer resistance using meter bridge, sources of errors and their minimization in these experiments, and the principle and applications of potentiometer for measuring emf and internal resistance of a cell.
This document provides an overview of key concepts in electric circuits including:
1. An electric circuit connects an energy source to an energy consuming device through conducting wires that allow electric charges to move. Electromotive force drives current, measured in amperes, through a circuit.
2. Ohm's law defines the relationship between voltage, current, and resistance. Resistance depends on the material's resistivity and dimensions. Components like resistors control current in circuits.
3. Electric power, measured in watts, is calculated by multiplying voltage by current. This relates to the energy delivered by a circuit over time for devices that function as resistors.
- Magnetic fields are produced by magnets and by moving electric charges like electric currents. A magnetic field has both a magnitude and direction at each point in space and can exert forces on moving charges.
- The magnetic force on a moving charged particle depends on the charge and current, magnetic field strength and direction, and the particle's velocity. Right hand rules can be used to determine the direction of the magnetic force.
- Charged particles moving in a magnetic field experience a force perpendicular to both their velocity and the magnetic field, causing them to travel in a circular path. The magnetic force does no work on charged particles.
The presentation describes resistance measurement through Voltmeter & Ammeter methods, DC bridges; Wheatstone bridge and Kelvin double bridge for low resistance.
Impact-driven Scrum Delivery at Scrum gathering Phoenix 2015Sara Lerén
This document discusses impact-driven delivery using impact mapping and management. Impact mapping is a framework that maps out the desired impact of a product on business metrics and user needs from the "why" through solutions. It provides a solid ground for design, planning, and quality assurance. The document outlines impact mapping components and provides exercises to practice defining metrics, users, and evaluating designs based on the impact map. It also discusses how impact management can be used to continuously evaluate hypotheses and solutions to deliver desired value and impact.
This document provides an overview of data quality and the fundamentals of ensuring data quality in an organization. It discusses the importance of data quality and outlines the key steps in the data quality pipeline including extract, clean, conform, and deliver. It also covers determining the system of record, cleaning data from multiple sources, prioritizing data quality goals, different types of data quality enforcement, and tracking and monitoring data quality failures. The document emphasizes that achieving high quality data requires planning, well-defined processes, and continuous monitoring.
Bioocean1 :Introduction to Biological Oceanography Gazi Abdullah
This document discusses food webs and trophic dynamics in marine ecosystems. It explains that photosynthesis by primary producers like phytoplankton converts sunlight into organic compounds, which are then consumed by herbivores. Higher trophic levels like carnivores consume herbivores or other carnivores. Decomposers like bacteria break down organic matter and release nutrients to be recycled. Energy is lost at each trophic level, so biomass decreases with increasing trophic level despite larger organism size. Food chains transfer energy between trophic levels in the grazing and detritus food chains.
This document provides summaries of 15 mobile applications. They cover a variety of domains including education, healthcare, entertainment, business, and more. Each application summary includes a description of its purpose and key features. Special features highlighted among the applications include customized content and interfaces, integration of external APIs, analytics and recommendation capabilities, and tools for enhancing user experiences.
Four Strategies to Create a DevOps Culture & System that Favors Innovation & ...Amazon Web Services
The document discusses strategies for creating a DevOps culture and system that fosters innovation and customer obsession. It recommends forming a cross-functional reliability team to gather user experience data, perform correlational analysis, and devise plans for building and maintaining resiliency. The document also advocates investing in continuous delivery, agile methodology, and intelligent analytics to achieve optimized software quality, velocity, and costs while driving business value.
Low-Latency Analytics with NoSQL – Introduction to Storm and CassandraCaserta
Businesses are generating and ingesting an unprecedented volume of structured and unstructured data to be analyzed. Needed is a scalable Big Data infrastructure that processes and parses extremely high volume in real-time and calculates aggregations and statistics. Banking trade data where volumes can exceed billions of messages a day is a perfect example.
Firms are fast approaching 'the wall' in terms of scalability with relational databases, and must stop imposing relational structure on analytics data and map raw trade data to a data model in low latency, preserve the mapped data to disk, and handle ad-hoc data requests for data analytics.
Joe discusses and introduces NoSQL databases, describing how they are capable of scaling far beyond relational databases while maintaining performance , and shares a real-world case study that details the architecture and technologies needed to ingest high-volume data for real-time analytics.
For more information, visit www.casertaconcepts.com
Four Graphics is a full service print and graphics company with over 20 years of experience. They have offices in London and Dubai to serve clients globally. Four Graphics has invested heavily in the latest digital printing technologies to provide clients with high quality graphics and rapid turnaround times. They have completed numerous large projects for clients such as Shell, Zain Communications, Samsung, and others. Four Graphics aims to continually improve their services and quality through adopting new technologies.
The document describes the reading process and what readers may experience when comprehending a text. It presents two scenarios - one where the reader clicks and understands the text, forming a clear mental model, and another where the reader experiences clunk and does not understand the text, unable to form a coherent mental model. It then lists strategies readers can use when experiencing clunk, such as rereading, solving unclear words, or reconsidering their mental model of the text.
Introducing the Big Data Ecosystem with Caserta Concepts & TalendCaserta
This document summarizes a webinar presented by Talend and Caserta Concepts on the big data ecosystem. The webinar discussed how Talend provides an open source integration platform that scales to handle large data volumes and complex processes. It also overviewed Caserta Concepts' expertise in data management, big data analytics, and industries like financial services. The webinar covered topics like traditional vs big data, Hadoop and NoSQL technologies, and common integration patterns between traditional data warehouses and big data platforms.
This document discusses Pig Hive and Cascading, tools for processing large datasets using Hadoop. It provides background on each tool, including that Pig was developed by Yahoo Research in 2006, Hive was developed by Facebook in 2007, and Cascading was authored by Chris Wensel in 2008. It then covers typical use cases for each tool like web analytics processing, mining search logs for synonyms, and building a product recommender. Finally, it discusses how each tool works, mapping queries to MapReduce jobs, and compares features of the tools like philosophy, productivity and data models.
The document discusses the Pesla constellation and its significance in Lakota cosmology. It describes Pesla, also known as Hocoka, as representing the center of the celestial sphere and the center of the race track constellation in the night sky. It provides details on the earth's wobble and precession of the equinoxes. It also maps out 13 constellations that comprise the Lakota star chart, identifying their positions on the ecliptic and the stories they represent.
How Verizon Innovates Through AI-Driven DevOps with DynatraceAmazon Web Services
With Verizon’s global customer base, managing and constantly improving customer experience for over 5 million users can be challenging. They found themselves spending too much time searching for and remediating bugs in their code, which reduced the quality of their customer experience and left little time for innovation. That’s why they initially turned to Dynatrace and AWS — to help them streamline the process of finding and remediating issues. They quickly realized, though, that they could do a lot more than simply find bugs by leveraging both AWS and Dynatrace, which led them to a complete DevOps transformation. By leveraging AI-driven feedback provided by Dynatrace along with AWS services such as AWS CloudFormation, AWS CodeDeploy, and Amazon Route 53, Verizon completely revamped the speed and quality of their deliverables. Join our upcoming webinar to learn how Verizon is using Dynatrace on AWS to optimize their delivery pipeline
15h00 intel - intel big data for aws summits rev3infolive
The document discusses big data and how hardware economics and the Intel Xeon processor are enabling big data solutions. It defines big data in terms of volume, velocity, and variety. It highlights how big data is driving benefits like reduced product development costs and increased revenue from data analytics. It then discusses how the Intel Xeon processor provides the performance needed for big data workloads on AWS at a lower cost than maintaining own infrastructure. Customer case studies show how life sciences, log analytics, and social networking use big data on AWS powered by Intel Xeon to get results faster and cheaper than traditional methods.
6. 5 Toon aan dat bij een parallelschakeling van weerstanden de vervangingsweerstand kleiner is dan de kleinste van de parallel geschakelde weerstanden
7. 6 Bereken de vervangingsweerstand in het geval van n identieke weerstanden (serie en parallel)
8. 7 Een bepaalde stroom splitst zich in een punt a in twee takken: de weerstand van de eerste tak is 5,00 Ω, de weerstand van de tweede tak is 10,0.Ω. Bereken de stroomsterkte in de eerste tak en in de hoofdtak als je weet dat de stroomsterkte in de tweede tak 3,00 A is.
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12. 10 Tien weerstanden van elk 500 Ω worden achtereenvolgens in serie en parallel geschakeld. Ze worden aangesloten op de netspanning van 220 V Bereken in beide gevallen de stroomsterkte
13. 11 Men schakelt twee weerstanden, respectievelijk 60,0 Ω en 90,0 Ω parallel en plaatst in serie daarmee een weerstand van 24,0 Ω. Het geheel staat op een spanning van 24,0 V geschakeld.
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15. 12 Twee weerstanden van respectievelijk 20,0 Ω en 80,0 Ω staan parallel. Een derde weerstand wordt hiermee in serie geschakeld en aangesloten op een spanning van 220 V. Bereken deze weerstand opdat de stroomsterkte in de hoofdketen 5,50 A zou bedragen. Bereken ook de spanning over elke weerstand. (Maak eerst een tekening van de schakeling).
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25. 17 Met vier identieke weerstanden van 15 Ω wil men een schakeling maken waarvan de totale weerstand 20 Ω bedraagt. Hoe kan men dit doen? Teken de schakeling
26. Met een open schakelaar leest met met de Voltmeter een spanning van 6 V af, dit is de spanning over de 2de weerstand R 2 . Wanneer de schakelaar s gesloten wordt, dan wordt de vervangingsweerstand van R 2 en R 3 samen kleiner dan de weerstand R 2 apart (open kring). De totale weerstand van de hele kring wordt dus kleiner, de stroomsterkte wordt dus groter. De spanning over R 1 wordt dan ook groter, dus moet de spanning over R 2 en R 3 samen, kleiner worden dan 6 V.
27. Bij open kring is de stroomsterkte in de hoofdketen 1 A. Bij gesloten kring is de totale weerstand 8 Ω en de stroomsterkte bijgevolg 1,5 A. De stroomsterkte in de hoofdkring stijgt dus met 0,5 A.
28. 20 Twee weerstanden worden parallel geschakeld op een spanning van 24,0 V. De hoofdstroom is 10,0 A. Eén van de weerstanden bedraagt 15,0 Ω. Bereken de waarde van de tweede weerstand en van de stroom die erdoor vloeit.
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