Cars & Driving
- noun an alternating-current motor that runs at a speed that is equal to or is a multiple of the frequency of the supply (e.g. the drive motor of electric powered vehicles)
- A constant-speed electric motor, usually direct current. The operational speed is equal to the frequency of supply voltage divided by one-half the number of cycles or windings on the machine.
- An AC motor which runs at a speed which is synchronized to the frequency of the power operating it, as opposed to an asynchronous motor, which is not.