4.1. (TYPES OF TRANSMISSION LINES)
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1.1. - . (. 1). (. .. 2). (Find a transcription of the following words in the English-Russian dictionary. Say the words according to the transcription (see Application1). Listen to the words (see Introduction. item2.)
to conduct - ,
to differ - ,
to insulate - ,
to support -
to include - ,
area - , ,
bus -
cord - ;
indoor, outdoor - ,
due to - ; -
indoor (outdoor) aerial - ()
difference frequence -
conducting surface -
supporting insulator -
different phases -
1.2. TYPES OF TRANSMISSION LINES 1.1. . (. . .1). (Find words pointed in the task 1.1. in the text TYPES OF TRANSMISSION LINES. Write down the words in a context (see Introduction. item1.)
TYPES OF TRANSMISSION LINES
Energy transmission is one of the basic elements of modern communication. Practically, one can say that communication is carried out due to the energy being transmitted over the transmitting lines.
Lines used for energy transmission may be classed into the following three types: overhead, indoor and underground. Naturally, these types are different in construction and in the elements they are made of.
As for overhead lines, they include line conductors, insulators and supports.
Indoor lines include conductors, cords and buses. The conductors in indoor lines may include one wire or a combination of wires not insulated from one another.
As for underground lines, they usually include line conductors and insulators. Underground lines are laid under earth. They are mostly used in cities and in industrial areas.
1.3. . (. . .3.). . , . (Read the following words. Pay attention to the translation of international words (see Introduction. item3). Try to translate these words without a dictionary. Write down the translation of these words, referring to the dictionary.)
industrial ____________________
nature _______________________
natural ______________________
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type ________________________
typical ______________________
1.4. . (Translate the following word combinations in writing.)
different constructions________________
supportable surfaces__________________
movable equipment__________________
reliable data________________________
indoor lines________________________
2.1. 3. , (. ). (Read Application 3. Identify the parts of speech the following words, write down the translation of the words (see Model.)
(Model):
| action () | process () | doer () |
| to amplify - | amplification - | amplifier - |
to invent, to produce, to conduct, to insulate.
2.2. 3. , (. ). (Read Application 3. Identify the parts of speech the following words, write down the translation of the words (see Model.)
(Model):
| verb | adjective | adverb |
| do - | included - | artificially - |
include, different, practically, movable, differently, reliable, support, approximately, differ, naturally, typical.
2.3. . (Translate the following word combinations and sentences in writing.)
over- -, -, -
(xamples): overhead ; overpressure .
under- -, -,
(xamples): underground ; underdeveloped , .
overproduction _______________________________________________________________
underground cable_____________________________________________________________
overpressure__________________________________________________________________
overhead line_________________________________________________________________
underpressure ________________________________________________________________
indoor lines__________________________________________________________________
due to the underdevelopment ____________________________________________________
due to the overproduction _______________________________________________________
Indoor lines include conductors, cords and buses._____________________________________
Overhead lines include conductors, insulators and supports._____________________________
3.1. . .5. , TYPES OF TRANSMISSION LINES (.1.2). (Read Introduction. item5. Following the recommendations, read the text TYPES OF TRANSMISSION LINES (item 1.2.)
3.2. TYPES OF TRANSMISSION LINES (.1.2). (Find the answers to the following questions in the text TYPES OF TRANSMISSION LINES (item 1.2.)
What types may energy transmission lines be classed into?
What elements do overhead lines include?
What elements do indoor lines include?
Where are underground lines laid?
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Where are they mostly used?
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4.1. TYPES OF TRANSMISSION LINES (.1.2). (. . .6). (Read the text TYPES OF TRANSMISSION LINES (item 1.2.). Prepare a report on the theme (see Introduction. item6.)
4.2. TYPES OF TRANSMISSION LINES (.1.2) TYPES OF TRANSMISSION LINES, 1). (Write down the reduced variant of the original text TYPES OF TRANSMISSION LINES (item 1.2) for the report on the theme TYPES OF TRANSMISSION LINES, using phrases from Application1.)
: Ȼ . (The additional information: You can make the presentation on a theme TYPES OF TRANSMISSION LINES and show it in the classroom.)
