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37. Say which -ing and -ed forms are parts of the predicates and which are participles.

1. Water-turbine plants are called hydroturbines.

2. The measures discussed are to be used for determining the faults in the conducting wires.

3. The transmission system selected for everyday use is based on the combined activity of telecommunication and computers.

4. Being a semiconductor, germanium is widely used in transistors.

3. Switch board is an assemblage of controlling and indicating devices mounted upon a frame.

6. The data obtained formed the basis for further activity.

7. Gas coolants used to remove heat losses help to increase the current- carrying capacity of the motor’s main parts.

8. Water power is being used to drive a dynamo.

9. Nuclear fuel is undergoing nuclear fission.

38. Which of the examples contain the Nominative Absolute Construction? Underline «the doer» in the constructions.

1. The reflected signal having been received, the distance to the object was counted.

2. Having been impregnated, paper is used as resistor.

3. What is an electric arc? It is a discharge accompanied by a temperature of over 3,000°C, produced when an electric current flows through a gap between two electrodes, the current being carried by the vapour of the electrode.

4. Various kinds of windings used depend on the type of building and location. The supplies required include metal conduits, boxes, fuses, and other elements.

3. Other factors being constant, the current is known to be directly proportional to conductivity.

The Gerund Герундий

Герундий имеет четыре формы:

Active

Passive

Indefinite

supplying

being supplied

Perfect

having supplied

having been supplied

39. What are the forms of the gerund in the examples given below? Translate the sentences into Russian.

1. Programming is the process of preparing, testing and correcting instructions for a computer.

2. Is any metal capable of being drawn out into a wire?

3. After having been subjected to severe testing the material was recommended for use.

4. A motor-starter is a device for starting motors from rest by the simple act of closing the switch.

5. A constant speed of the device is maintained by supplying it with energy.

6. Steam is an important factor in producing usable energy because of the power being created by its expansion.

7. One of the problems modem research laboratories are working at is the problem of finding materials that can serve as electrical conductors in fusion reactors.

8. On having lost some of its electrons, the atom has a positive charge.

40. Use Participle I, Participle II or the Gerund of the verb in brackets and translate the sentences.

1. (Cool) an electric conductor results in its reduced resistance to electric current.

2. What is the name of an (insulate) material (use) to prevent an electric shock?

3. The (apply) technique brought about quite unexpected results.

4. Mica is used as a dielectric due to (have) high voltage strength.

5. The world’s first tidal power station, a plant on the Ranсe River in France, began (operate) in 1966.

6. Solar energy has been converted to electricity by (use) solar cells, which are semiconductor devices (produce) from thin slices of silicon.

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