Question: I CAN USE CHATGPT TOO PLEASE DON'T USE IT . Question continues as follows: Determine the efficiency and regulation of the transformer for a load

I CAN USE CHATGPT TOO PLEASE DON'T USE IT. Question continues as follows: Determine the efficiency and regulation
of the transformer for a load power factor of 0.87 leading..You may use reasonable engineering approximations to simplify your analysis ... About this question i saw some answers they solve equivalent resistor with just sum of R1 and R2, why didn't we use R2'=R2*((N1)/(N2))^(2) formula can you explain this part or detailed full solution and show me the main and equivalent circuit diagram. Thanks a lot.
I CAN USE CHATGPT TOO PLEASE DON'T USE IT .

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