阿摩線上測驗
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阿摩線上測驗
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(22%) 計算題A1Φ,200kVA,2000V/200V,60Hz transformer gave the followi test data OCT: 200V,20A,200W； SCT: 100V,100A,800W.
(二)、(8%)
1. Connect this conventional transformer as an auto-transformer with 2000/2200V
(draw the circuit). (3%)
2. Find the VA rating of auto-transformer. (2.5%)
3. Find the efficiency at full load, cosθ=0.8.(2.5%)