【判断题】【消耗次数：1】
两种磁路系统的三相变压器可看出，相同的额定容量下，三相变压器组更节省材料、效率更高、价格更便宜。
①
正确
②
错误
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相关题目
【单选题】
对于三个单相变压器组成的三相变压器组，不对称短路分析时，对励磁电抗的处理方法是（）。
①
负序和正序励磁电抗可以视为无限大，零序励磁电抗一般不能视为无限大
②
负序、正序和零序励磁电抗均可以视为无限大
③
负序、正序和零序励磁电抗都不可以视为无限大
【简答题】
三相变压器组的一次、二次绕组均采用[填空]连接。
【单选题】
一台三相变压器的联接组别为YN，d11，其中的“11”表示变压器的低压边( )电角度。
①
线电势相位超前高压边线电势相位330°
②
线电势相位滞后高压边线电势相位330°
③
相电势相位超前高压边相电势相位30°
④
相电势相位滞后高压边相电势相位30°
随机题目
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The reason why he didn’t take the exam was _____ he had an accident on his way to the school.
①
because
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because of
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that
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due to
【单选题】
Our Chinese tradition is quite different _____ we only want to defend our own country, not to invade other countries.
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because
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for
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in that
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that
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might well
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might as well
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might have to
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might
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the front cover of which
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the front cover of that
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that front cover
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of what front cover
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its
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whose
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their
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the
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①
was
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were
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has been
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had been
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_____ you work hard enough _____ you be able to get a PhD degree in three years.
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Only if, will
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If only, would
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Should, will
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Unless, would
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China hosted the Olympic Games in 2008, thus _____ her dream to be recognized as one of the greatest nations in the world.
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having realized
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realizing
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realized
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to realize
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Man is superior to animals ______ he uses language to convey his thoughts.
①
that
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in that
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when
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in which
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If it _____ for his help, I wouldn’t be a university student now.
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hasn’t been
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hadn’t been
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wasn’t
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weren’t