You Do Need power plug adapter while traveling from Bulgaria to United Arab Emirates (UAE).

Here is Why You Need An Adapter

The outlet and plug type used in United Arab Emirates (UAE) is G and in Bulgaria are C and F. This is how they look like.

Bulgaria

In Bulgaria, outlets of type C and F are in use.

Type C

Type F

United Arab Emirates (UAE)

In United Arab Emirates (UAE), outlets of type G are in use.

Type G