Single phase transformer equivalent circuit referred to primary side

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ns01
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I have a single phase transformer tutorial that I am struggling with, I was wondering if anyone could help.
Attached is the equivalent circuit diagram
I have values for all varables, and have a few questions,

When the circuit is reduced to its approximate form (ie, secondary side referred to the primary side), do rm , Xm and N1/N2 remain the same.

And given the transformer is operating at a constant primary voltage of V1, how do I calculate the primary current, the primary real power, the primary power factor and the secondary voltage.
 

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You need to reflect the secondary quantities to the primary side. Then you can solve the primary circuit, neglecting the transformer.

Have you learned about reflection operations using ideal transformers?