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Exercise 4. Complete the sentences:



1. The main principle of fibre optics is…

a). refraction of light

b). reflection of light

c). transmission of light

 

2. Light pipes cannot be used to…

a). illuminate in accessible places

b). transmit telephone calls

c). heat houses

 

3. 12- hair- thin optical fibres can carry at the same time…

a). 40000 two- way telephone calls

b). 56 million two- way telephone calls

c). 48000 two- way telephone calls

 

4. Glass fibres deliver a clean signal, because…

a). they transmit light with little loss in intensity

b). they are not subjected to electrical interference

c). they transmit optical signals through strands of ultrapure glass

 

5. Fibre optic cable can transmit…

a). audial images and data

b). visual images and voice

c). audio/video images and data

 

Exercise 5. Answer the following questions:

1. What purposes can light pipes be used for?

2. Is Bell’s phrase,, I have heard a ray of the Sun, laugh, cough and sing” refered to the invention of a ,, photophone” or a telephone?

3. What are the advantages of optical fibres over traditional telephone cables?

4. Thanks to what can many kinds of information be sent simultaneously along a single fibre?

5. What is the main property of optical fibres?

 

Exercise 6. Put a tick (v) or a cross (x):

Optic fibres…           telephone cables…            

    v                                    x                          1. integrate two industries

                                                                                2. deliver a clean signal

                                                                                3. cannot send a lot of information at the same time.

                                                                                4. prevent eaves dropping

                                                                                5. can carry 48000 two- way phone calls

                                                                                6. can transmit voice, data, visual signals

                                                                                7. are cheap and reliable

                                                                                8. are bulky.

 

Exercise 7. Define fibre optics, a light pipe.

Exercise 8. Describe the main principle of fibre optics.

 

Exercise 9. Explain why we may soon not need to separate cable systems.

 

Exercise 10. Compare traditional telephone cables with fibre optic ones.

 

Exercise 11. Prove that the finer the fibres and the greater their number, the clearer and more detailed the image being transmitted.

 

Exercise 12. Discuss the text according to the points:

1. Application of a light pipe.

2. Bell’s inventions.

3. Advantages of optical fibres over traditional cables.

4. Properties of optical fibres.

                                            Notes:

1. strand –                           пасмо, нитка         

2. curve –                            крива

3. bundle –                          вузол

4. beam –                            пучок

5. immune –                       стійкий 

6. interference –                  накладення, перешкода, інтерференція

7. jamming –                       затискання

8. leaking –                         витік

9. eavesdropping           підслуховування

10. sheathing –                   оболонка

11. coaxial -                       коаксіальний ( співпадаючий)

UNIT 3

LESSON 1

 

ELECTRONICS HELPS MAN

 

1. Our age has been called a variety of things: the Space Age, the Electronic Age, the Atomic Age, etc. one of them, however, is very exact and that is the Age of Automation.

2. Automation is considered to be the highest stage in the development of technology. It has made the development of rocket production and nuclear industry possible. Automation is known to be very effective in continuous cycle production rolled stock production and operation of thermal and hydropower plants. Automation of production processes is impossible without automatic control; the required machines based on electronic computation. Electronic computing techniques find broad application in many spheres and are a bases for the development of modern program-controlled machine tools and the controlling of spaceship flights. The following can be given as example of how electronics helps man.

3. The letters at the General Post Office are now handled by electronic automats. Not long ago hundreds of women sorted letters arriving from all the world by hand. Now, one girl sits at a control panel watching a screen which is like that of a television set. The address appears on the screen and the girl having read the number of the post office to which the letter is addressed presses the necessary button and the envelope is conveyed to the mail bag which is then taken to the post office indicated on the envelope.

4. A number of higher learning establishments are installing electronic data processing systems for the counting of educational data. Automatic translating machines, computer-based teaching devises and other different applications of computer technology are the things which help people in their life, work and study.

 

Exercise 1 . Give the Ukrainian equivalents to the following words and combinations:

1). continuous cycle production;                                                                                                                   

2). required machines based on electronic computation;                                                                 

3). electronic computing techniques;

4). modern program-controlled machine tools;

5). higher learning establishments;

6). electronic data processing systems;

7). computer-based teaching devices;

8). automatic translating machines.

 

Exercise 2. Say if these statements are true or false :

1. One of the names of our age is exact and that is the Space Age.

2. Automation is considered the first stage in the development of technology.

3. Automation is known to be very effective in the development rocket production.

4. Electronic computing techniques find broad application in many spheres.

5. A number of higher learning establishments are installing electronic data processing systems for the counting of educational data.

 

Exercise 3. Complete the sentences choosing the right variant :

1. One of the names of our age is very exact and that is …

а). the Age of automation;     

b). the Space Age;      

c). the Atomic Age.

 

2. Automation of production process is impossible without …

а). machines based on electronic computation;  

b). automatic control;

c). modern program-controlled machine tools.

 

3. Automation is known to be very effective in …

а). continuous cycle production;     

b). the counting of educational data; 

c). the controlling of spaceships flights.

 

4. The letters at the General Post Office are now handled by …

а). electronic computers;   

b). electronic devices;   

c). electronic automats.

 

5. Automatic translating machines, computer-based teaching devices are the things which help people in their …

а). study and work;          

b) rest and entertainment;       

c) everyday problems and concerns.

 

Exercise 4. Answer the following questions:

1. What is the exact name of our Age?

2. What has made the development of nuclear industry possible?

3. Where is automation very effective?

4. What are the examples of how electronics helps man?

5. What things help people in their life, work, study?

 


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