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37. 交流同步發電機的逆功率保護裝置需設延時的原因為何?(A) 均壓線在均衡無效功率,機組間會出現短時的環流(B) 在並聯時會出現允許範圍內的短時逆功(C) 完成調頻操作所必須的功能(D) 為完成兩
問題詳情
37. 交流同步發電機的逆功率保護裝置需設延時的原因為何?
(A) 均壓線在均衡無效功率,機組間會出現短時的環流
(B) 在並聯時會出現允許範圍內的短時逆功
(C) 完成調頻操作所必須的功能
(D) 為完成兩並聯電機相序相同
參考答案
答案:B
難度:適中0.54902
統計:A(14),B(28),C(1),D(6),E(0)
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