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一台额定电压为220V的三相异步电动机定子绕组Δ接线，若起动时定子绕组改成Y接线，且接在380V的交流电源上，则电机的（）。
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一台额定电压为220V的三相异步电动机定子绕组Δ接线，若起动时定子绕组改成Y接线，且接在380V的交流电源上，则电机的（）。
A、起动转矩增大
B、起动转矩减少
C、起动转矩不变。
D、均可
时间：2021-09-01 20:46
关键词：
联大
河南理工大学
电气工程及其自动化
电机学
答案解析
C
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一台额定电压为220V的三相异步电动机定子绕组Δ接线，若起动时定子绕组改成Y接线，且接在380V的交流电源上，则电机的（）。
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