A.kV和kVA B.kV和MVA C.V和VA D.V和kVA
A.-5%~+5% B.-7%~+7% C.-10%~+5% D.-10%~+10%
如圖13-3所示,簡單電力系統(tǒng),變壓器T1的變比應(yīng)為()。
A.242:121:10.5 B.220:121:10.5 C.220:121:11 D.220:110:10.5