You Do Need power plug adapter while traveling from North Cyprus to Cuba.

Here is Why You Need An Adapter

The outlet and plug type used in Cuba are A, B, C and L and in North Cyprus is G. This is how they look like.

North Cyprus

In North Cyprus, outlets of type G are in use.

Type G

Cuba

In Cuba, outlets of type A, B, C and L are in use.

Type A

Type B

Type C

Type L