Problemas de exámenes de electrotecnia PDF Download

Author: Faustino Alcalá Rueda
Publisher:
ISBN: 9788433826831
Category : Technology
Languages : es
Pages : 227

View

Book Description

Author:
Publisher:
ISBN:
Category : Catalogs, Publishers'
Languages : es
Pages : 990

View

Book Description

Author: Hans Groß
Publisher: Publicis
ISBN:
Category : Science
Languages : en
Pages : 344

View

Book Description
This book provides a comprehensive introduction into the fundamental physics and basic technical principles of automatic control and drive technology. It pays particular attention to the design and dimensioning of electrical feed drives in automation technology. It helps engineers and technicians to put into practice the theoretical fundamentals of automatic control and drive technology for machines in the tool, glass and ceramics industries as well as in the woodworking and packaging industries. It also deals with the application of robots and other manipulators. The relationships between automatic control and mechanical engineering are described and explained, making the book also particularly useful for students of technical disciplines.

Author: Eric Scerri
Publisher: Oxford University Press
ISBN: 0190233001
Category : Science
Languages : en
Pages : 263

View

Book Description
In his latest book, Eric Scerri presents a completely original account of the nature of scientific progress. It consists of a holistic and unified approach in which science is seen as a living and evolving single organism. Instead of scientific revolutions featuring exceptionally gifted individuals, Scerri argues that the "little people" contribute as much as the "heroes" of science. To do this he examines seven case studies of virtually unknown chemists and physicists in the early 20th century quest to discover the structure of the atom. They include the amateur scientist Anton van den Broek who pioneered the notion of atomic number as well as Edmund Stoner a then physics graduate student who provided the seed for Pauli's Exclusion Principle. Another case is the physicist John Nicholson who is virtually unknown and yet was the first to propose the notion of quantization of angular momentum that was soon put to good use by Niels Bohr. Instead of focusing on the logic and rationality of science, Scerri elevates the role of trial and error and multiple discovery and moves beyond the notion of scientific developments being right or wrong. While criticizing Thomas Kuhn's notion of scientific revolutions he agrees with Kuhn that science is not drawn towards an external truth but is rather driven from within. The book will enliven the long-standing debate on the nature of science, which has increasingly shied away from the big question of "what is science?"

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 2286

View

Book Description

Author: Ellen M. Immergut
Publisher: Oxford University Press
ISBN: 0198860528
Category : Political Science
Languages : en
Pages : 1048

View

Book Description
Health Politics in Europe: A Handbook is a major new reference work, which provides historical background and up-to-date information and analysis on health politics and health systems throughout Europe. In particular, it captures developments that have taken place since the end of the Cold War, a turning point for many European health systems, with most post-communist transition countries privatizing their state-run health systems, and many Western European health systems experimenting with new public management and other market-oriented health reforms. Following three introductory, stage-setting chapters, the handbook offers country cases divided into seven regional sections, each of which begins with a short regional outlook chapter that highlights the region's common characteristics and divergent paths taken by the separate countries, including comparative data on health system financing, healthcare access, and the political salience of health. Each regional section contains at least one detailed main case, followed by shorter treatments of the other countries in the region. Country chapters feature a historical overview focusing on the country's progression through a series of political regimes and the consequences of this history for the health system; an overview of the institutions and functioning of the contemporary health system; and a political narrative tracing the politics of health policy since 1989. This political narrative, the core of each country case, examines key health reforms in order to understand the political motivations and dynamics behind them and their impact on public opinion and political legitimacy. The handbook's systematic structure makes it useful for country-specific, cross-national, and topical research and analysis.

Author: M B Davies
Publisher: Royal Society of Chemistry
ISBN: 1847552307
Category : Science
Languages : en
Pages : 174

View

Book Description
Vitamin C is the first book to cover the history, chemistry, biochemistry, and medical importance of vitamin C and is the first to provide an in-depth, interdisciplinary study of this essential and fascinating compound. The book provides a comprehensive and systematic account of the vitamin C story, fully surveying the history of scurvy and how its cure led to the suggestion, discovery, and isolation of the vitamin, later named L-ascorbic acid. It describes in detail the vitamin's structure determination, synthesis and manufacture, and its oxidation products, derivatives and related compounds. Its key biochemical roles are fully categorized and explained, and the medical importance of the vitamin, including the recent use of so-called megadoses, is thoroughly discussed. Vitamin C will be of interest to a very wide readership and will provide useful background information and inspiration for students at various levels. It will also be relevant to the interested chemist or lay person, as well as those carrying out research in this area.

Author: Thomas Commerford Martin
Publisher:
ISBN:
Category : Electric motors
Languages : en
Pages : 302

View

Book Description

Author: Michael Domjan
Publisher: Thomson Brooks/Cole
ISBN:
Category : Education
Languages : en
Pages : 392

View

Book Description
This popular text gives students a comprehensive and readable introduction to contemporary issues in learning and behaviour, while providing balanced coverage of classical and instrumental conditioning.

Author: Xavier Alabern Morera
Publisher: Edicions Upc
ISBN: 9788483019658
Category : Technology & Engineering
Languages : es
Pages : 280

View

Book Description
Este libro es un conjunto de problemas resueltos del area de la ingenieria electrica, fruto de la larga experiencia acumulada por los autores en la docencia de la asignatura Electrotecnia en la ETSEIAT de la UPC.Trata de los circuitos electricos trifasicos, especialmente como circuitos de potencia, cuya metodologia y comportamiento en regimen sinusoidal es imprescindible conocer para entender la generacion, el transporte y la distribucion de la energia electrica (capitulo 1). Presenta una coleccion de problemas de transformadores monofasicos, orientados a la determinacion de los parametros del circuito equivalente a traves de las pruebas de vacio y cortocircuito, asi como a la determinacion del rendimiento (capitulo 2). Asimismo, se presenta el trabajo de transformadores en paralelo. Tambien se estudia el comportamiento de los transformadores trifasicos en regimen sinusoidal alimentando diferentes tipos de cargas (capitulo 3). Se dedica un capitulo a la resolucion de problemas de maquinas asincronas, especialmente a los motores trifasicos, ampliamente utilizados en la industria, pues el estudio de sus circuitos equivalentes, previa determinacion de sus parametros, es fundamental para la determinacion del funcionamiento del motor (capitulo 4). Asimismo, se estudia la potencia del motor en distintas situaciones, asi como el rendimiento del mismo y el proceso de arranque. Se hace referencia a los distintos ejercicios de maquinas sincronas, donde la maquina se estudia como generador y motor (capitulo 5). Varios de los problemas que se presentan en esta obra fueron ejercicios de examen en las diferentes convocatorias. Finalmente, se incluye un compendio de examenes realizados en los ultimos anos (capitulo 6).