Контрольная работа по Английскому языку на тему: "GALVANIC CORROSION"

1. Read and translate the text.

I. Read the text carefully and answer the following questions:

GALVANIC CORROSION

Galvanic corrosion occurs when two different metals electrically contact each other and are immersed in an electrolyte. In order for galvanic corrosion to occur, an electrically conductive path and an ionically conductive path are necessary. This effects a galvanic couple where the more active metal corrodes at an accelerated rate and the more noble metal corrodes at a retarded rate. When immersed, neither metal would normally corrode as quickly without the electrically conductive connection (usually via a wire or direct contact). Galvanic corrosion is often utilized in sacrificial anodes. What type of metal(s) to use is readily determined by following the galvanic series. For example, zinc is often used as a sacrificial anode for steel structures, such as pipelines or docked naval ships. Galvanic corrosion is of major interest to the marine industry and also anywhere water can contact pipes or metal structures.

Factors such as relative size of anode (smaller is generally less desirable), types of metal, and operating conditions (temperature, humidity, salinity, etc.) will affect galvanic corrosion. The surface area ratio of the anode and cathode will directly affect the corrosion rates of the materials.
 

2. Answer the questions
   
   1)When does galvanic corrosion occur?
   
   2)What metal is often used as a sacrificial anode for steel structures?
   
   3) What factors will affect the corrosion rates of the materials?
    

   3. Give English equivalents to the Russian words and word combinations:

   коррозия появляется – 

   углубляться – 

   гальваническая пара – 

   нормы задержки коррозии – 

   ускоренные нормы – 

   через провод – 

   использовать – 

   трубы –

   размер – 

   уровень коррозии –

   условия эксплуатации –
    

   4. Match the word (A) with the appropriate definition (B)

   humidity - 

   pipes – 

   thread; corrosion – 

   the air; wire – 

   surface –
   
   5. Find all the sentences where the professional terminology is used, read and translate them. Write the professional terminology.
   
    

   6. Finish these sentences

   1. On the one hand, studying at the university is hard, on the other hand,.....

   2. All in all.....

   3. I would not be comfortable in such a situation .....

   4. I would love to be there!

   5. Personally, I'd prefer .....

   6. I'd rather ....

   7. If you ask me, I would definitely prefer....

   8. To my way of thinking....

   9. As far as I'm concerned...
    

   7. Open the brackets using the right form of the verb

   1. When I opened the window, I saw the sun (to shine).

   2. We are sure that Simon(to marry) her some time later.

   3. She is very upset: she (to break) her watch.

   4. I knew he(to pass) his examination at that time.

   5. We thought she (to be) still in hospital.

   6. Bill said he (to feel) ill.

   7. My cousin promised he(to visit ) me in a week.
   
   8. Give the nouns which describe people who do things or who come from places. Use these noun endings: -an, -ant, -ar, -er, -ist, -or.
   
   9. Form nouns from the words with the help of suffixes “-ment-”, “-ant-“,        “-ness-”and “-ist-“

   1. appoint –

   2. move – 

   3. mad – 

   4. enjoy – 

   5. science – 

   6. advertise – 

   7. material – 

   8. judge –
   
    

   10. Read and translate the words and word combinations and translate them in written form. Try to remember them

   railway network – 

   is considered to be –

   railway requirements -

   equipped with – 

   to satisfy – 

   to provide – 

   department –

   rolling stock technical service - 

   cars and carriages technical service - 

   electricity – 

   automatics and telecommunication -
   
   11. Answer the questions
   
   1) What prospects are opened to the graduates of the College of Railway Transport?
   2)The profession of a railway specialist is claimed today, isn’t it? Why?
   3) Is our profession well-paid?
   4) Our profession is interesting and easy. Do you agree?
   5) What character must a person have to be a good specialist?