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【单选题】
Transformer () without load, the voltage regulation when the primary side is disconnected from the power grid is called non-excitation voltage regulation.
A.
Secondary side
B.
The primary side
C.
High side
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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
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A.
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B.
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D.
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【单选题】Transformers can be divided into power transformers, instrument transformers and () according to their uses.
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B.
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A.
Iron loss
B.
Copper loss
C.
Mechanical loss
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A.
The Southern Silk Road
B.
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C.
The ancient Sino-India Road
D.
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【单选题】Voltage regulation under secondary side load of transformer is called ().
A.
Voltage regulation without excitation
B.
On-load voltage regulating
C.
No load voltage regulation