ВАРИАНТ 5 I. Перепишите следующие предложения, подчеркните в каждом из них глагол-сказуемое и определите его видо-временную форму и залог. Переведите предложения на…

ВАРИАНТ 5

I. Перепишите следующие предложения, подчеркните в каждом из них глагол-сказуемое и определите его видо-временную форму и залог. Переведите предложения на русский язык.

1. Much work had been done for improving soil fertility on this farm.

2. Modern agriculture is developing in close contact with science and new technologies.

3. Our industry will increase the output of faster and more powerful tractors.

4. The driver usually increases speed gradually.

5. Some cities are so noisy and polluted that in many places vehicles have been banned in the city centre.

6. I was watching TV from 7 to 9 p. m. yesterday.

7. Ann had done her homework before her parents came.

II. В следующих предложениях подчеркните Participle I и Participle II установите функции каждого из них, т.е. укажите, является ли оно определением, обстоятельством или частью глагола-сказуемого. Переведите предложения на русский язык.

1. A letter sent from St. Petersburg today will be in Moscow tomorrow.

2. When sending the telegram, she forgot to write her name.

3. A fish taken out of the water cannot live.

4. They will be working at that time tomorrow.

5. He had translated the text before I came.

III. Работа с текстом:

a) переведите текст письменно на русский язык;

b) составьте глоссарий (13-15 слов или словосочетаний терминологического характера с их значениями);

с) письменно ответьте на вопросы.

DYNAMOS

         The term «dynamo» is applied to machines which convert either mechanical energy into electrical energy or electrical energy into mechanical energy by utilizing the principle of electromagnetic induction. A dynamo is called a generator when mechanical energy supplied in the form of rotation is converted into electrical energy. When the energy conversion takes place in the reverse order the dynamo is called a motor. Thus a dynamo is a reversible machine capable of operation as a generator or motor as desired.

A generator does not create electricity, but generates or produces an induced electromotive force, which causes a current to flow through a properly insulated system of electrical conductors external to it. The amount of electricity obtainable from such a generator is dependent upon the mechanical energy supplied. In the circuit external to a generator the e. m. f. causes the electricity to flow from a higher or positive potential to a lower or negative potential. In the internal circuit of a generator the e. m. f. causes the current to flow from a lower potential to a higher potential. The action of a generator is based upon the principles of electromagnetic induction.

The dynamo consists essentially of two parts: a magnetic field, produced by electromagnets, and a number of loops or coils of wire wound upon an iron core, forming the armature. These parts are arranged so that the number of the magnetic lines of force of the field threading through the armature, coils will be constantly varied, thereby producing a steady e. m. f. in the generator or a constant torque in the motor.

Answer the questions.

1. What is the term “dynamo” applied to?

2. What kind of a generator is called dynamo?

3.Isa dynamo a reversible machine capable of operation as a generator or motor as desired?

4. How many parts does dynamo consists of?

5. How are these parts arranged?

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