List of top Electrical Engineering Questions on Transformers

An auto-transformer is most efficient when the transformation ratio ($K = V_2/V_1$) is:

For two three-phase transformers to operate in parallel, which of these is an absolute requirement?

A 200/100 V transformer has a primary resistance of 0.1 $\Omega$. What is this resistance when referred to the secondary side?

In a single-phase transformer, the core is laminated primarily to reduce:

An autotransformer converts 200V to 100V supplying same load. Copper saving is

What is the major disadvantage of an auto transformer?