I. Перепишите предложения. Определите, какой частью речи являются слова, оформленные окончанием –s и какую функцию это окончание выполняет: а) показатель 3-го…

I. Перепишите предложения. Определите, какой частью речи являются слова, оформленные окончанием –s и какую функцию это окончание выполняет:

а) показатель 3^-го лица единственного числа глагола в простом настоящем времени (Present Simple);

б) признак множественного числа имени существительного;

в) показатель притяжательного падежа имени существительного.

Предложения переведите:

1.  He parks his car next to the building.

2.  Moscow parks are the most beautiful in the world.

3.  The author mentions this phenomenon in his articles.

4. My friend’s father plants beautiful plants every spring.

5. His works were published in 2010.

 

II. Перепишите следующие предложения, содержащие разные формы сравнения, подчеркните эти формы и переведите предложения:

1.  This Hydro-Electric Power Station is the biggest in Europe.

2.  The more experiments we carry out, the more data we obtain.

3.  St. Petersburg is one of the most beautiful cities of Russia.

4.  The greater the number of free electrons in a substance, the better that substance conducts electricity.

 

III. Выберите правильную форму прилагательных. Предложения переведите.

1. The exam was (longer, the longest) than I thought it would be.

2. It was (sweeter, the sweetest) apple I had eaten for ages.

3. The lake was (deeper, the deepest) than I expected so I decided to take a boat.

4. I bought these leather trousers as they seem to be (more durable, the most durable) than my jeans.

5. The (easier, easiest) way to get there is by bus.

6. You looked depressed this morning but you look a bit (happy, happier) now.

7. It’s a little (warm, warmer) today than it was yesterday.

8. Computers are one of the (latest, later) dis­coveries of the 20th century.

 

IV. Перепишите предложения, подчеркните в каждом из них глагол сказуемое и определите его видовременную и залоговую форму. Предложения переведите:

     1. Quantum mechanics has greatly influenced on the nuclear theory.

2. The problem of the structure of matter is constantly occupying the minds of many    scientists.

3. The discovery process dates back to 2750 BC, when Egyptians referred to the electric fish as the ''Thunders of the Nile''.

4. In 600 BC, Thales of Miletus became the earliest researcher of electricity.

5. In summer this old man was staying at home all the time.

6. They will be flying to New York next week on Monday.

7. They went for a walk after they had finished the work.

8. By the end of this week my friend will already have written his report on history.

 

V. Перепишите предложения. Подчеркните в каждом модальный глагол или его эквивалент. Переведите предложения:

1.  Heat can be divided into three different types.

2.  A great number of plastics should find their applications in the electrical industry.

3.  Finally he had to tell us the truth.

4.  The existence of an X-ray laser in the future may be possible.

5. My sister will be able to help you tomorrow.

6. We must stay at home this afternoon.

 

VI. Перепишите предложения. Переведите их, обращая внимание на функцию слова one:

1. One understands the importance of electricity when one sees trams, trolley-buses and trains driven by it.

2. This is more important problem than that one.

 

VII. Письменно переведите текст, обращая внимание на пояснения к тексту:

 

The transformer

A transformer cannot be called a machine for it has no moving parts. We know the transformer to be an apparatus designed for changing voltages and currents by means of magnetic induction.

A two-winding transformer is consist of two coils so arranged that the magnetic lines of force of one coil pass through the other. Transformers is generally used only with alternating current. The alternating current in one coil induces an e.m.f. in the other one because of the alternations in the value of the current in the first coil.

In order to strengthen the magnetic field passing through the coils of a transformer, a closed core of iron is generally used. The iron provides a good path for the magnetic lines of force and nearly all the lines of force from one coil pass through the other. An ideal transformer has no load losses. It means that all the lines of force of one coil pass through the other, and vice versa. However, the ordinary transformer is supposed to have no load losses.

The coil on which the current is impressed on the input side of the transformer is called the primary, while the one from which the induced current is obtained on the output side is called the secondary. In case the secondary has more turns than the primary, the output voltage is larger than the input voltage and the transformer is called a step – up when transformer.

The secondary has fewer turns than the primary the transformer is called a step-down transformer.

If the same number of magnetic lines of force pass through two-coils, the ration of the e.m.f. induced in the two coils is proportional to the ratio of the number of turns in the two coils. In the transformer this means that the e.m.f. in the secondary is to e.m.f. in the primary as the number of turns in the secondary is to the number of turns the primary.

 

Пояснения к тексту:

by means of – при помощи, посредством

because of – из-за, вследствие

in order to – для того, чтобы

it means – это значит

however – однако

in case – в случае, если

the e.m.f. in the secondary is to e.m.f. in the primary – э.д.с. во вторичной так относится к э.д.с. первичной

vice versa – наоборот

the number of – количество

 

IX. Переведите следующие технические термины и словосочетания:

 

alternating voltage	secondary coil of a transformer
magnetic induction	input voltage
magnetic line of force	output voltage
value of current	number of turns in a coil
core of iron	step-up transformer
non-load losses	step-down transformer
primary coil of a transformer

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Формат документа - doc

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