What is principle operation of a single phase transformer?

To stept up or step down the voltage of transmisson of electricity.

You cannot convert a single-phase transformer into a three-phase transformer. However, you can connect three individual (but identically specified) single-phase transformers to create a three-phase...

Definition Of Transformer: A Transformer is a static electric apparatus to transfer or transform electric power from one circuit to another circuit with same frequency but may be with raise or lower...

with an meg ohm meter

The neutral in a single phase transformer is the center tap point on the secondary winding. On a single winding secondary the connection terminals are labeled X1 and X2. A ground wire is connected to...