ELECTRICIDAD

Programa de Formación:

Código:

Versión:

Nombre del Proyecto:

Código:

Fase del proyecto:

Actividad (es) del Proyecto:

Resultados de Aprendizaje: identificar las oportunidades que el SENA ofrece en el marco de la formación profesional de acuerdo con el contexto nacional e internacional. Competencia: promover la interacción idónea consigo mismo, con los demás y con la naturaleza en los contextos laboral y social

Duración de la guía ( en horas):

2

El propósito de esta guía es Integrar las cuatro habilidades de la lengua para que el aprendiz adquiera las destrezas en la interpretación de manuales y textos técnicos en inglés de acuerdo a su campo de estudio.

3.1 Actividades de Reflexión inicial.

Make a list of the vocabulary that you remember (in English) related to your technical program. Don’t use dictionary.

Ampere, electronic amplifier, atom, cable, diode, electric current, electricity, electrician, electrocution, electron, switch, transformer, transistor, volt, watt, battery, cycle, period, generator, hertz, circuit.

3.2 Actividades de contextualización e identificación de conocimientos necesarios para el aprendizaje.

Match Column A with Column B

3.3 Actividades de apropiación.

Read the following text about the Fundamentals of Electricity. Try to complete the spaces 1 to 12 with the following words

FUNDAMENTALS OF ELECTRICITY

DIALOGUE

Student: How would you define electricity?

Engineer: That’s a difficult question. I’d describe it as the 1. ability of charge particles in motion.

Student: So an electric current is the flow of charged particles?

Engineer: That’s right. Electric current can be ac or dc.

Student: I know that these terms are abbreviations for alternating current and direct current.

But what do they mean?

Engineer: Indirect current the flow of charges, usually, electrons move in one direction at a

2. Behavior rate. In alternating current the charge s flow first in one direction

and then in another, repeating this cycle with a definite frequency.

Student: I’ often heard people use the term sine wave when discussing ac. What is a sine

Wave?

Engineer: It’s one type of wave form. Here, I’ll draw you a picture. This waveform graphically

Represents the time-varying behavior of a sinusoidal current.

Student: I infer for your drawing that it keeps repeating itself over long periods of time. Is that

Correct?

Engineer: Yes. Each repetition is called cycle a cycle, and the 3. amount of time

Taken for a wave to undergo one cycle is its period.

Student: It would seem to me that the shorter the period of the wave, the more cycles per

second it would have.

Engineer: Correct. The number of cycles per second is the wave’s frequency 4. measured

in hertz ( HZ ).

Student: I assume we can start measurement the current at any given instant in time and still

be able to determine the period.

Engineer: Correct. In fact, any given instant in time for a cyclical wave form has an associated

stage of wave 5. Development the phase of the wave.

Student: I think I understand that. Now can you tell me what conductors are?

conductors are substances that can easily carry an electric current. 6. insulator

on the other hand, are substances that do not easily conduct current. For example,

copper is a conductor , and glass is an insulator. A conductor forms a definite path,

called a circuit through which charges flow, and an insulator confines electricity to the

circuit.

Student: What causes current to flow?

Engineer: Voltage, or EMF, which stands for 7. Electromotive force. There are many

different devices used to create and EMF.

Student: would batteries

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