| Answer | Crossword Clue |
|---|---|
| engine | machine for converting energy into force and motion |
| engines | machine for converting energy into force and motion |
| generators | A dynamo or similar machine for converting mechanical energy into electricity |
| generator | A dynamo or similar machine for converting mechanical energy into electricity |
| electroacoustic | relating to electroacoustics, the technology of converting acoustic energy into electrical energy and vice versa |
