Question 23M.1.HL.TZ1.35

Three changes are made to a transformer.

I.    increasing the thickness of wire in the coils
II.   laminating the soft iron core
III.  using wire with lower resistivity

Which changes will reduce power losses in the transformer?

A.  I and II only

B.  I and III only

C.  II and III only

D.  I, II and III