Mathematics · Transformers

A transformer has a 120 V primary and a 20 V secondary rated at 4 A. The measured winding resistances are 5 Ω for the primary and 0.3 Ω for the secondary. What is the total copper loss of the transformer at rated secondary current?

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A transformer has a 120 V primary and a 20 V secondary rated at 4 A. The measured winding resistances are 5 &Omega; for the primary and 0.3 &Omega; for the secondary. What is the total copper loss of the transformer at rated secondary current?