Please help
A 5.5 kW, 400 V, 50 Hz, three-phase induction motor with an ideal stator runs with 5% slip at full load. The total mechanical loss is 400 W. Calculate the:
c) power delivered to the load` (3 Marks)
My Question is the 5.5kW means Stator input power or mechanical power develop in the rotor shaft
How does this belong to Arduino programming?
Neither, it is the vector sum of the power drawn by the three phases. Motors always rated by drawn power from the source.
Pretty sure your professor can answer that for you quite easily.
I would suggest you go back over your notes and recommended text for this subject.
Way back in my University days this was a classic tutorial question.
Do some research, hit the book of electrical machines.
Tom.. 
