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I was wondering if it would be possible for someone to help me clarify a few things regarding transmission lines and transformers?

For a Power Transmission line, what exactly is the mutual coupling between phases of a 3 phase line? Is this the same as the shunt capacitance and if not, what exactly is the shunt capacitance? Is the series resistance and inductance of a transmission line simply the resistance and inductance of each of the 3 lines separately and not taking into account linkage between the lines?

For a transformer, am I correct in thinking that on no-load, the current drawn from the primary is used to supply the magnetising current required for production of a flux around the core, and also for supply of the losses within the core (eddy current and hysteresis). What exactly is the magnetic impedance and the leakage as these terms confuse me somewhat? Also, when a TXFR is on load, are the additional losses simply the I^2R

losses in the windings due to the winding resistances?

Thank you in advance

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# Power Transmission Line and Transformer Parameters

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