The table below summarises the plug types, voltage and frequency of electrical current in both Australia and Romania.
|Plug Types||I||C, F|
|Frequency of electrical current||50Hz||50Hz|
Australia uses Plug Type I.
The voltages found in Australia (230V) and Romania (220V and 230V) are not exactly the same, but the difference is tolerable, so you should not need a transformer.
The frequency found in Australia and Romania is exactly the same (50Hz). Timing devices and appliances that use motors will function as expected under this frequency.