VI. Add following offers from the text

1. Switches that automatically operated include....

2. Therefore, the simple act of installing the unit automatically....

3. All the main units are connected in parallel, while the switches....

4. However since the car is mostly made of metals, two wires are unnecessary....

VII. Answer the questions.

1. Why in modem automobile is the single wire system used?

2. What do you know about switches?

3. Can we say that the car is the conductor? Why?

4. What are the basic circuits?

Практическая работа № 27 an electric car

Цель: Введение и активизация лексики по теме «Электричка».

Оборудование: комплект тестов, раздаточный материал, иллюстрации по теме.

I. Learn the words and expressions.

An electric van фургон

The fuel cell элемент

To charge заряжать

An internal combustion engine двигатель внутреннего сгорания

To compete конкурировать

Exhaust gases отработанные газы

The advantage преимущество

II. Read and translate the text. An Electric Car

Part 1

At present there are a lot of talks about electric cars, for they have the advantage of giving off no exhaust gases. The electric car has a long history. The first cars were built at the end of last century, but they could not compete against the internal combustion engine. They have several disadvantages. First, we have no really suitable batteries - they are too heavy, take along time to charge, have too small capacity and a relatively short life.

For a while the fuel cell looked very hopeful. This does not have to be charged, it generates its own energy from a chemical reaction. But this, too, proved too large and expensive.

An electric car would have to run 200-250 km on one charge to complete with the conventional car which can do about 200 km on a full tank. So scientists and engineers are looking for better storage batteries or cells, and ways of using energy more economically.

There are about 120 different electric cars around the world. Some can run 100 km and longer on one charge. This is quite sufficient for town traffic, where cars do not cover such long distances. Electric vans can have their storage batteries recharged while being loaded or unloaded.

Today there are more than 190 million cars in the world. In ten years there will be over 200 million not to mention of motorcycles. It is estimated that if these changed over to electricity, they would require six million kilowatt hours, and all the power stations in the world now generate only a little over a third of that. This means that tremendous efforts will have to be made in future to increase the power output.