6. More Complex Expressions for Describing a Machine

The ability to describe a machine (i.e. what it is for, what it consists of and how exactly it works in terms of principle) is crucial for a future professional engineer. Look at this outline to see the basic phrases to do that and if you are not fully satisfied, study the full version of the same document here. It contains a word list of many expressions divided into several sections. Sections 1, 5, 6 and 7b are probably the most useful. Now, fill in this text explaining how a simple electric motor described in the listening comprehension task works.