A device consisting of a mechanically coupled electric motor and generator which may be used to control the voltage, frequency, or phase of an electrical supply.
- ‘The alternator is replaced by motor generators.’
- ‘When driving resumes, the SUV's 70-kilowatt traction motor generator can launch the vehicle on electric power.’
- ‘While the motor generators audibly wound down, the group was in telephone contact with former motor-generator engineer Bob Frias.’
We take a look at several popular, though confusing, punctuation marks.