Read the following sentences and say which type of the engine is described.

Date: 2015-10-07; view: 431.

D. the internal combustion engine (diesel, petrol, electric, jet).

C. the steam engine,

B. the wind-powered engine,

A. the water-powered engine,

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UNIT 3. HISTORY OF THE RAILWAY TRANSPORT.

You know that there are various types of engines, such as:

1) In this engine fuel ignites and burns inside the engine itself and not in a furnace.

2) This engine is very economical; it doesn't need fuel to function. But it is dependent on the weather.

3) In this engine there is a furnace and a boiler. The furnace is filled with wood or coal and then lit. The fire heats the water in the boiler and when it boils, it turns into steam.

4) It was a wheel but a very small one. Long wide wooden blades were attached to it. The wheel was driven by the wind.

5) This engine is too large and heavy; it needs too much fuel.

6) This engine is an ordinary wheel with blades fixed to it and the current of a river turned it. It was used for irrigating fields.

7) This engine is lighter and smaller than a steam engine because it doesn't have a boiler. It is more powerful than a steam engine because it uses better-quality fuel: petrol or kerosene.

8) The power of this engine depends on the quantity of coal. The more coal is put into the furnace, the stronger the fire is burning. The more steam there is the faster a train is moving.

9) This engine is the most ecologically friendly one, because it doesn't pollute environment with exhausted gases.

10) This engine is now used in automobiles, diesel locomotives and motor ships.

11) This engine is the most powerful, because the gases in it reach the temperature of over a thousand degrees.