A. Maximum resistance on primary side and least resistance on secondary side
B. Least resistance on primary side and Maximum resistance on secondary side
C. Equal resistance on primary and secondary side
D. No ohmic resistance on either side.
Answer:D. No ohmic resistance on either side.
Explanation:
An ideal transformer a transformer which has no copper losses, no iron loss in core and no leakage flux. In other words, an ideal transformer gives output power exactly equal to the input power.
Characteristics of an ideal transformer:
The resistances of the primary and secondary winding are zero.
The core of the ideal transformer has infinite permeability.
The leakage flux in the transformer core is zero.
The ideal transformer has 100 percent efficiency.