1-
? ( what are the methods of rotational speed regulation of electrical machines (Dc , asyncrounos, synchronous
2-
What are the magnetic losses , specify place of appearance and what methods of determinations ?
3-
What are the basic type of windings?
4-
What are the construction and operation of linear -rotational machines?
5-
How to classify the magnetic field of electrical machines

It is not a homework it is a project it has 30 question and I could't answers those 5 questions

Refer books on design/performance of ac/dc machines.