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单选题
同步发电机的自励恒压装置不具有()。
A
同步发电机起动后,转速接近额定转速时,建立额定空载电压的作用
B
当电网负载变化时,能按发电机容量按比例分配有功功率的作用
C
在负载大小变化时,能自动保持电压基本不变的作用
D
在负载性质发生变化时,能自动保持电压基本不变的作用
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更多 “单选题同步发电机的自励恒压装置不具有()。A 同步发电机起动后,转速接近额定转速时,建立额定空载电压的作用B 当电网负载变化时,能按发电机容量按比例分配有功功率的作用C 在负载大小变化时,能自动保持电压基本不变的作用D 在负载性质发生变化时,能自动保持电压基本不变的作用” 相关考题
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