Answer / mahadev kovalli

efficiency of "X"mer= out put power/in put power + I2R
losses*100

and efficiency is in percentage.
The efficiency is 85% to 95% its good transformer we can
say.

Answer / mihirlio1991

i thing ............

the efficiency of transformer is depends upon some factor
its right below:-

1) material use in coil
2) winding are properly done

use material in transformer are not good
then the efficiency are poor
its depends upon the upper factors..

Answer / guest

Just go to the transformer name plate, you will find the
efficiency..

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