3) (At the examination)

Professor: Your first question to answer is about the problem of turning heat into electricity.

Student: The usual way of producing electricity is by means of generators that get their power from steam or water turbines. Another way of producing electricity is nuclear power. The heat energy produced by the reactor is used to make steam; the steam gives mechanical energy to generators which produce electrical energy.

Professor: That’s good. And what can you tell me about the field of application of electricity?

Student: Electricity made possible the engineering progress of today. It serves as the basis of modernizing industry, increasing equipment efficiency, mechanizing and automating progress.

Professor: And what about household appliances?

Student: Electricity has become a part of our life. Electric motors operate washing machines, refrigerators, vacuum cleaners, electric razors, electric cookers and kitchen units, air-conditioners. All we have to do is turn a switch and electric devices will be doing their job for us.

Professor: That will do. I see you have read a lot for your examination. Your mark is a five.