Tecno Bilingüe 3ºB

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20 respuestas a Tecno Bilingüe 3ºB

  1. Antonio dijo:

    Dear Pupils,
    Leave here all the comments and suggestions you like. I hope we will have a course full of good things. We will soon have a group photo to put in this space.

  2. Antonio dijo:

    Aquí os dejo el enunciado de los mismos, en inglés, para que vayáis practicando para el examen.
    En este primero practicar sólo lo de la Ley de Ohm y la Ley de la Potencia,los voltajes, lo de las intensidades,etc. Los transformadores aún no lo expliqué y el consuno aunque expliqué algo entra para el siguiente. Por tanto, no pregunto ni “transformers” ni ” How much will we have to pay”….
    Study and you will have good luck¡
    *****
    What voltages and intensities of output will be obtained from a transformer with 50 turns in the primary. The input voltage is 20 volts. In the secondary there are 2 coils with 50 and 300 turns. R=5 ohms
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    Calculate the power that is used by a heater connected to 220 V if it has a resistance of 60 O.
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    Find the intensity which/that circulate in a device which consumes 440w if the voltage it receives is 220v
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    In our home we have a computer which is powered at 250 W and a lamp powered at 100 watts.How much will we have to pay the electrical company each month if the computer is used an average of 2h/day and the lamp 4h/day. Price= 0.1€ Kw.h
    *******************************************************************************
    What ouput voltages and intensities will be obtained from a transformer with 100 turns in the primary, the input voltage is 20 volts. In the secondary there are 2 coils with 50 and 300 turns respectively? R=5O
    *******************************************************************************
    Calculate the power consumed by a heater connected at 220 V if it has a resistance of 30 O
    *******************************************************************************
    Calculate the intensity circulating in a device which consumes 200 W if the input voltage is 220 V

  3. Antonio dijo:

    Comenzamos con los plásticos. Su lenguaje es complicado en español así que en inglés más. Pero no os preocupéis veréis cómo con las clases, actividades y proyectos que haremos con ellos los aprendéis. Aprovecho las notas que tomó vuestra compañera Aida, gracias Aida, para ir empezando con el vocabulario. Las notas están tomadas por ella en clase, hay algún pequeño comentario que hacer y las repasaremos y corregiremos en clase pasado mañana. Ciao¡
    ¡¡Tenéis que poneros las pilas para el examen de los plásticos!! “You have to put the batteries in” (Traducción propia)

    UNIT 1: PLASTICS
    ‘polymer==> ‘POLYMERIZATION/ai/

    Plastic-plástico
    Capacity to change and adapted the shape-capacidad de darles forma
    They can be coloured-pueden ser coloreados, (dye-teñir)
    They are light-son ligeros
    They have a very good insulation(aislante) from electricity and heat-son buenos aislantes de la electricidad y el calor
    Good mechanical re’sistance
    Very resistent to acids, atmospheric agents, corrosives but at the same time its great inconvenience. Difficult to recycle it.
    Accumulation causes serious problems for the environment
    CLASIFICATION

    There are two big groups:
    -Thermoset (termoestables): you can only shape/mould/form once (solo les puedes dar forma una vez)
    -Thermoplastic (termoplásticos): you can shape them as often as you like (les puedes dar forma las veces que quieras)

    *Thermoset:
    Phenoplast

    Bakelite -used in the electronic circuits (se usan en circuitos electrónicos), plaques
    handles
    Aminoplast:
    Melamine Used for covering surfaces
    Polyester ‘tergal, terlenka==> don´t crease, they dry very quickly
    Mixturing with fibreglass it is very useful for e.g. canoes /ka’nus/
    Cellulosic plastic
    Cellulose ace’tate /seliolous/ Used for transparencies

    Polyethylene bottles, containers, plastic bags. North Sea gas==>pipes
    Polyethylene terephthalate \ˌter-ə(f)-ˈtha-ˌleit\(PET), plastic bottles (e.g.mineral water)
    PVC, Initial letters don’t confuse with ‘acronyms
    Polyvinyl chloride \ˌpä-lē-ˈvī-nəl\//cl’oraid/

    used in: containers, fall pipes (rain) or drain pipes (toilet)
    windows frames, electric cable covers, boxes for electrical installations

    Poly(methyl methacrylate) (PMMA)\ˈpä-lē-ˌme-thəl-\polimezl mezacrileit
    It is v. transparent, for optical lenses, signs for companies or for ex. when you go out of this building (main entrance) you can see one(Misioneras Claretianas)
    It is resistant so we can use it in aircraft windows-
    To protect photos its the best, keyrings.

    Polystyrene (pronounced /ˌpɒliˈstaɪriːn/) )
    good mechanical resistence, very useful for outdoor furniture, pens,

    Expanded polystyrene which is very useful as foam packaging

    Polypropylene\ˌpä-lē-ˈprō-pə-ˌlin\ (PP) videocases, syringes, the exterior of a car battery (case),cords, rafia,

    Nylon
    test-tube
    NY-LON
    Very resistant, forms threads/e/easily. Used for gears, textiles (textails/, (cords,ropes)

    Recycling of plastics
    . Don´t desintegrate with the passing of time//Don´t degrade or decompose over time
    . Accumulation causes serious problems for the environment
    . We have to recover other types of material (Al, glass, paper…)

    Recycling is collecting and transforming materials that are considered rubbish into useful products
    Selective collection makes it easier
    The main problem is separating and clening, expensive and complicated
    Effectiveness: depends on citizenship collaboration
    4 types of recycling
    Primary: from waste, we get plastics with the same properties as the original
    Secondary: They have less quality as the original
    Terciary: break down into chemicals and fuel
    2 methods: pyrolysis, without contact with the fire-> gases and smoke ==> very complex processes -> tar, fuel (petrol / gasoline) and raw materials -> Plastics
    Gasification= Pyrolysis but more temperature and pressure.
    Gas obtained-> produces electricity, methanol or ammonia
    Cuaternary:incineration-> heat-> steam generators, for drying furnaces
    Disadvantages: Very pollutant and expensive

    Plastics manufacturing
    Injection: grains melted / Founded, heating, plunger, screw
    Extrusion: The process of molding plastics for making profiles or tubing
    Blowing: Bottles
    Compression: Thermoset
    Plastics manufacturing

    Injection: grains melted / Founded, heating, plunger, screw

    Extrusion: The process of molding plastics for making profiles or tubing

    Blowing: Bottles

    Compression: Thermosets

    How to cut plastics
    Expanded polystyrene: heated metal thread
    rigid plastics: saw, scratch , breaks off
    Sheets of plastic: scissors
    Rigid Plastics Drilling: slowly, to prevent breakage and chips jumping// flying chips

  4. Antonio dijo:

    Everything is here: http://antoniocuestas.com/building.pdf

    1.Building /Construction
    Materials
    Materiales
    Pétreos // Stone materials

  5. David Montilla dijo:

    Jose antonio,¿ el examen que me lo haces el martes?

  6. David Montilla dijo:

    Puedes subir las soluciones de los ejercicios para que los comprobemos?

  7. Patricia Álvarez P dijo:

    donde estaban las soluciones????

  8. Antonio dijo:

    Claro que sí, ahí va. Saludos. (contraseña la de siempre).
    http://www.antoniocuestas.com/mecanica.pdf

  9. Diego Roces dijo:

    Jose Antonio en el examen va a entrar los tipos de frenos?

  10. Antonio dijo:

    Lección /
    http://antoniocuestas.com/07_Unidad%2007_3ESO_TECNO.pdf
    La lección 7 en inglés, falta el final de la lección.
    Aquí resto, texto:
    Technical Project
    A technical Project is an organised plan of work which is carried out to create an object.
    The documents we use are:
    -Report. Where we justify the idea of the project, commercial and technical specifications of the product (materials, workings, dimensions, etc) and the innovations it will bring about.
    -Appendices: Where we can find other solutions, calculations, why we choose this solution and not others, legal specifications, materials, security measures, etc.

    Technical Drawings are the graphical representation of the object. It is very important to draw according to the rules.

    Process Sheets/Roadmap manufacturing and assembly show us the organisation and coordination of the tasks to carry out the project.

    The budget. In it we calculate the cost of all the factors included in the process.

    Design

    Design: where we determine all the characteristics of the object.

    Design has the following steps:
    The shape, the size and function
    Materials
    Aesthetic appearance
    Accessories and mechanical complements
    Environmental impact
    Safety measures
    Ergonomics

    CAD is very useful for designing because it is easier to draw the plans and we can simulate the working of the object so allowing us to verify designs without making the object.
    But, in general, we have to make up a prototype.

    You hear in the mass media or in conversations: This lamp is a designer object.
    All lamps (objects) have a design. More precisely it refers to an innovative or striking design.

    Work plan

    It is the successive order of the necessary operations to make up the object

    Planning allows us:

    -Calculate the time and organise the manufacturing.
    – Make sure materials and equipment needed are available at the appropriate time and place
    – Taking advantages of the available resources

    Planning is noted in the following docs:
    Process sheets/manufacturing sheets/ instructions for assembly.

    .
    Making up and verification of prototypes

    Prototype is the initial version of the object being made in order to test it in all aspects. When I worked in industry we designed an armoured vehicle and we checked it on the computer but we made a prototype.
    On the computer everything was ok but when we built and tested it we realised that the shock-absorbers vibrated uncomfortably so we had to change them.

    Divulgation

    The divulgation of a product has two sides/aspects:
    Technical divulgation and commercial divulgation
    Technical divulgation is carried out:
    a) Technical reports which include: characteristics, applications and improvements with respect to similar products.
    b) Presentations and exhibitions accompanied by written documents and audiovisuals, meetings and briefings
    c) Exhibition of the product in professional fairs

    Commercial divulgation
    Commercial divulgation is oriented towards presenting the product to the general
    public; in this case the usual publicity channels are used:
    catalogues or booklets, mass media, etc.
    In this phase even more money is spent than in all the other processes.

    This phase is very important because sometimes good products don’t sell well because of inadequate publicity or viceversa.

    PC is formed by the CPU, pheripheral devices (Input/Output) and devices for saving the information and software which make the computer work.

    Compartments for internal devices.
    Power Source/Supply-> Device which gives the proper/correct voltage to the different elements of the CPU

    – Electronic components, mother board

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