【判断题】【消耗次数：1】
三相变压器的时钟表示法就是把高压绕组线电势作为时钟的长针，永远指向“12”点钟，低压绕组的线电势作为短针，根据高、低压绕组线电势之间的相位指向不同的钟点？
①
正确
②
错误
参考答案：
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相关题目
【单选题】
根据国家标准统一规定，三相变压器的高压绕组首端用（ ） 表示，末端用（ ）表示。
①
a、b、c和 x、y、z
②
A、B、C 和X、Y、Z
③
a、b、c和X、Y、Z
④
A、B、C 和x、y、z
【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°
【简答题】
三相变压器组的一次、二次绕组均采用[填空]连接。
随机题目
【单选题】
---I think we’ve met somewhere before.---No, _________.
①
it isn’t likely
②
it can’t be true
③
I would rather not
④
I don’t think I know you
【单选题】
A： How long have you been here?B： Not for long, only about five minutes. Alice and Monica ______ here with me.
①
have walked
②
had walked
③
were walking
④
walked
【单选题】
---I hear Faulen has taken up his business in London. ---Really? He has no business _________ and I’m sure he’ll fail.
①
feeling
②
idea
③
sense
④
opinion
【单选题】
Drive _____ until you come to the small town, which lies about 100 kilometers _____ London.
①
north; to the east
②
north; east of
③
to north; east of
④
to north; in the east
【单选题】
---Tony, go to pay for the supper bills. ---Why _________ I? All of you are richer than me!
①
should
②
must
③
can
④
shall
【单选题】
A group of American soldiers were walking along the road in Irap when a bomb was _____, three of whom were killed.
①
set about
②
set out
③
set up
④
set off
【单选题】
It’s quite different from _____ I read last month.
①
that
②
which
③
the one
④
the one what
【单选题】
As they are retired, the Smiths prefer a house in the country to spend the rest of their life _____ in a large city.
①
in this
②
to one
③
with that
④
about it