JAMB - Physics (2015 - No. 44)
Transformers are designed so that energy losses are reduced to a minimum. This is achieved through which of these process?
I. Using a soft iron ore
II. Laminating the iron core to reduce energy loses due to eddy current
III. Designing an efficient iron core
I. Using a soft iron ore
II. Laminating the iron core to reduce energy loses due to eddy current
III. Designing an efficient iron core
I & II only
II only
I, II, & III only
III only
คำอธิบาย
Fig (I) (II) (III) are they in which a transformer was designed to reduce an energy loses by reducing through this collective designed or efforts