1Why we need power transformers?
The power transformers are used to rise and lower the voltage level in transmission and distribution network, so the electrical energy is transmitted and distributed with minimum loss and cost.
2What is the efficiency of medium and large power transformers?
At full load, the efficiency of new medium and large power transformers is over 99.5%.
3Is the Voltage Ratio equal with Turns Ratio?
Only for transformers with similar winding connections on both sides.