Answer: An ideal transformer is one that has no losses and magnetic leakage.
An ideal transformer is an actually static equipment that has no leakage. In such types of transformers, the voltage transformation takes place without any loss. It is an imaginary transformer where there are no losses in terms of no load losses and load losses. In an ideal transformer when power is measured on primary and secondary, it will show the same value of 10kws only. As the load varies only from 0 to 100Kws thus there are no losses, no voltage drop, etc. So efficiency is 100% which is only hypothetical.
An ideal transformer is one which
An ideal transformer is one that has no losses and magnetic leakage. A transformer that is free from all types of losses can be called an ideal transformer. This is an imaginary transformer that is said to have no core loss, no leakage flux, and no ohmic resistance.