A-A+ In an alternating current electrical system a low system power factor is a direct sign of.. 2020-09-18 20:31:30 资格考试 阅读 问题详情 A.wasted energyB.efficient operationC.a short in the exciter field windingsD.an excessive number of minor system grounds请帮忙给出正确答案和分析,谢谢! 参考答案 查看解答