Answer / venkatesh

It is the ratio of Power delivered to the load to the power
supllied to the device as a input.

Answer / arun

efficiency of the transformer is 97 or 98%

Answer / gs kiani

Transformer efficiency depends upon Input and Output Power.
Effeciency =Output Power/ Input Power
As transformer is static device without any rotating part so it is most efficient electical component or device with efficiency more than 95% approaching to 98%

Answer / manikandan

which is nothing but the ratio of primary power to the
secondry power

Answer / kinjan

IT IS THE RATIO OF OUTPUT POWER TO THE INPUT POWER.

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