The table below summarises the plug types, voltage and frequency of electrical current in both Azerbaijan and Yemen.
|Plug Types||C||A, D, G|
|Frequency of electrical current||50Hz||50Hz|
Azerbaijan uses Plug Type C.
In Yemen there's more than one socket type in use. You may require more than one adaptor.
The voltages found in Azerbaijan (220V) and Yemen (230V) are not exactly the same, but the difference is tolerable, so you should not need a transformer.
The frequency found in Azerbaijan and Yemen is exactly the same (50Hz). Timing devices and appliances that use motors will function as expected under this frequency.