可能有零序电流穿越变压器的接线形式是（）。 -题库考试答案搜索网

可能有零序电流穿越变压器的接线形式是（）。

单选题

2021-09-02 11:51

A、Yn，d
B、Yn，y
C、Yn，yn
D、Y，d

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正确答案

C

试题解析

标签：联大河南理工大学—电力概论

感兴趣题目

翻译：With Average or With Particular Average（WA or WPA）（）

电力系统发生单相接地故障时，有零序电流和零序电压产生，采用（）保护可自动切除单相接地故障。

主变压器零序过电压、零序过电流保护之间如何配合？

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

（）, or drum is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.

A salvor may be（）the whole or part of the payment due under Salvage Convention to the extent that the salvage operations have become necessary or more difficult because of fault or neglect on his part or if the salvor has been guilty of fraud or other dishonest conduct.

The （） is used for hauling in or letting out the wires or ropes.

Vessels must be（）valid certificate of nationality or certificated of registry or license.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

三相电力变压器有（）种接线级别。

三相电力变压器的零序阻抗大小与（）无关。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

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