What will be the outcome when a three Phase Induction motor connected and started as star with 380 Volts with the overload setting at 8 Amperes ?

Dear son , your question is incomplete.You should provide the power factor .On the other hand , you should provide this notev/star-v/delta.Any how alwase use this formula Power in watt =1. L .Vl .Il . cosfi and from here you can calculate whatever.

Where did you study to qualify as an Electrical Engineer ? As such a simple and basic question is not something I'd expect any engineer to need to ask on a forum ??

You havn't provided enough information to even start to answer the question properly, more importantly why don't you know this ?!?!

the it will rotate in low speed, and depending on load will domain current, it it's full loaded, it will reach6.5 Amps.