3-1. The secondary winding of a transformer has a terminal voltage of vs (t) = 282.8 sin 377t V. The turns ratio of the transformer is 50:200 (a = 0.25). If the secondary current of the transformer is is( t ) = 7.07 sin (377t − 36.87°) A, what is the primary current of this transformer? What are its voltage regulation and efficiency? The impedances of this transformer referred to the primary side are
| Req = 0.05 Ω | RC = 75 Ω |
| Xeq = 0.225 Ω | XM = 20 Ω |
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