a) Three single-phase Transformer rated at   , are connected in on a , 3-phase line. If the load is calculate the following currents:

i) In the incoming and outgoing transmission lines.
ii) In the primary and secondary windings.

b) The transformers are used to raise the voltage of a 3-phase, line to

i) How must they be connected?
ii) Calculate the line currents for a load.
iii) Calculate the corresponding primary and secondary currents.


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