Two 3-phase transformers are to be connected for parallel operation.
Which one of the following arrangements is impossible?
A. Transformer Δ; primary Y; secondary Y Transformer B; primary Δ; secondary Δ
B. Transformer Δ; primary Δ; secondary Y Transformer B; primary Δ; secondary Δ
C. Transformer Δ; primary Y; secondary Δ Transformer B: primary Δ; secondary Y
D. Transformer Δ; primary Δ; secondary Δ Transformer B; primary Δ; secondary Δ
Show Answer
Answer: B
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