有一台单相变压器,额定容量为 10 kV·A ,二次侧额定电压为 220 V ,要求变压器在额定负载下运行。二次侧能接 220 V/40 W ,功率因数为 0.44 的日光灯 支?设每灯镇流器的损耗为 8 W 。 得分/总分
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