In an ideal transformer, which of the following statement is correct?
- A. no voltage drops in resistance or leakage reactance
- B. mmf required to maintain main flux is small
- C. no core loss
- D. all the above are correct
Answer: D. all the above are correct
Explanation: An ideal transformer has zero winding resistance (no I²R loss), zero leakage flux (no leakage reactance drops), zero core losses (no hysteresis/eddy losses), and infinite permeability (negligible magnetizing mmf).