【判断题】【消耗次数：1】
三相负载作星形连接时，无论负载对称与否，线电流必定等于相电流。
①
正确
②
错误
参考答案：
复制
纠错
相关题目
【单选题】
在负载为三角形连接的对称三相电路中，各线电流与相电流的关系是( )。
①
大小、相位都相等
②
大小相等、线电流超前相应的相电流30°
③
线电流大小为相电流大小的 倍、线电流超前相应的相电流30°
④
线电流大小为相电流大小的 倍、线电流滞后相应的相电流30°
【单选题】
在三相交流电路中，当负载为对称且三角型连接时，线电流与相电流的相位关系是
①
线电压超前相电压300
②
线电压滞后相电压300
③
线电流超前相电流300
④
线电流滞后相电流300
随机题目
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A: Thank you for your invitation. B: [填空].
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Its a pleasure
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It doesnt matter
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Its a small thing
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Ill appreciate it
【单选题】
A: Will the speech last long? B: [填空].
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Im afraid it will
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Yes, the speech lasts
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No, the speech doesnt last
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Not at all
【单选题】
—I want to have my CD player fixed, but I cant find a repair shop. —Oh, I know_____ . Come on, Ill take you there.
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one
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the one
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ones
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many
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Ive lost my pen. I cant find it anywhere, so I have to buy ____ after school.
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it
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one
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this
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that
【单选题】
—Can I help you?—Id like to buy a present for my fathers birthday, _____ at a proper price, but of great use.
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that
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anyone
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one
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everything
【单选题】
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What do you want
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What are you looking for
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What can I do for you
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Do you want to buy anything
【单选题】
—He has two brothers and three sisters. Do you know____ of them?—No, I know ____ of them.
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some; none
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some
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any; none
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either; some
【单选题】
A: Would you like to order now? B: [填空].
①
Im full now
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But the price is high
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Yes, Id like fish and soup
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Its very kind of you
【单选题】
A: Im sorry. Robert is not in his office. B: [填空]?
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Are you sure for that
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Would you like to leave a message
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Can you take a message for me
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Can he phone me
【单选题】
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①
Certainly
②
Certainly I was
③
Sure I was
④
O.K