一台三相6极电动机，每极每相槽数q=3，则定子总槽数Z1和极距<imgwidth="35"height="38"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTD.files/DJYTD38712.png">分别为（）

【单选题】【消耗次数：1】

① <imgwidth="328"height="59"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTD.files/DJYTD38829.png">

② <imgwidth="328"height="59"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTD.files/DJYTD38940.png">

③ <imgwidth="328"height="59"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTD.files/DJYTD39052.png">

参考答案：

复制

纠错

相关题目

【单选题】单相变压器磁路饱和时，主磁通<imgwidth="35"height="54"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTD.files/DJYTD28530.png">和励磁电流<imgwidth="38"height="60"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTD.files/DJYTD28643.png">的波形（）

① 同时为正弦波

② 同为尖顶波

③ 不会同时为正弦波

查看完整题目与答案

【单选题】一台他励直流发电机的输入功率<imgwidth="40"height="59"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTD.files/DJYTD39625.png">等于（）

① <imgwidth="148"height="60"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTD.files/DJYTD39741.png">

② <imgwidth="157"height="99"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTD.files/DJYTD39862.png">

③ <imgwidth="103"height="60"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTD.files/DJYTD39983.png">

查看完整题目与答案

【单选题】三相绕线式异步电机定子边电压降低时，最大转矩<imgwidth="50"height="60"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTD.files/DJYTD19805.png">和临界转差率<imgwidth="54"height="60"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTD.files/DJYTD19919.png">

① 增大、不变

② 增大、变小

③ 变小、不变

④ 变小、增大

查看完整题目与答案

【单选题】三相异步电动机的电流方程式<imgwidth="178"height="63"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTD.files/DJYTD9292.png">实质上表达的是定转子间的磁势平衡关系。当转子边电流<imgwidth="40"height="63"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTD.files/DJYTD9424.png">增大时，定子边电流<imgwidth="38"height="63"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTD.files/DJYTD9540.png">________

① 减小

② 增大

③ 不变

查看完整题目与答案

【单选题】变压器主磁通<imgwidth="50"height="60"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTD.files/DJYTD18138.png">的主要特征是：

① 一个幅值恒定的旋转磁场

② 一个幅值变化的旋转磁场

③ 一个幅值变化，位置不变的脉动磁场

④ 必须在自定义函数后面

查看完整题目与答案

【单选题】关于三相异步电动机转子边产生的磁动势<imgwidth="50"height="60"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTD.files/DJYTD30744.png">的旋转速度说法正确的是（）

① 相对定子边磁动势<imgwidth="44"height="60"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTD.files/DJYTD30878.png">静止

② 相对定子静止

③ 相对转子静止

查看完整题目与答案

【单选题】一台变单相压器在高压边做空载实验求得的励磁参数和在低压边做空载实验求得的参数应（）。假设<imgwidth="230"height="60"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTD.files/DJYTD36321.png">.

① 大<imgwidth="50"height="54"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTD.files/DJYTD36433.png">倍

② 小<imgwidth="50"height="54"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTD.files/DJYTD36556.png">

③ 一样大

查看完整题目与答案

【单选题】在采访中，记者既要"身入"，又要"心入"。"心入"，就是要有强烈的社会责任感，要对客观事物进行由表及里的分析，还要().

① A.广泛地接触群众

② B.多方面地挖掘材料

③ C.细心地掂量各种材料的价值

④ D.细心地掂量各种材料的价值

查看完整题目与答案

【多选题】 Whatdoestheword"steal"(thelastpara.)mean?<br/>

查看完整题目与答案

【单选题】并励直流发电机的电磁功率<imgwidth="49"height="50"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTFD.files/DJYTFD34413.png">与输出功率<imgwidth="40"height="50"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTFD.files/DJYTFD34526.png">之差等于（）

① 励磁铜耗<imgwidth="63"height="57"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTFD.files/DJYTFD34648.png">和转子铜耗<imgwidth="63"height="54"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTFD.files/DJYTFD34761.png">之和

② 铁耗<imgwidth="57"height="54"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTFD.files/DJYTFD34877.png">和附加损耗<imgwidth="47"height="50"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTFD.files/DJYTFD34990.png">之和

③ <imgwidth="54"height="54"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTFD.files/DJYTFD35103.png">+<imgwidth="57"height="54"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTFD.files/DJYTFD35212.png">

查看完整题目与答案

随机题目

【单选题】 Although he did not know London well, he made his way ______ to the airport.

① easy enough

② enough

③ easily enough

④ enough easily

查看完整题目与答案

【单选题】 The world is trying every means to _____the friendship between the two countries.

① raise

② promote

③ arise

④ protest

查看完整题目与答案

【单选题】 One rainy night the policeman had a chance _____ with a gang of smugglers.

① acquaintance

② encounter

③ account

④ interview

查看完整题目与答案

【单选题】 Let’s make it round 9 o’clock.____________

① No. I think so.

② I am proud of you!

③ It’s impossible.

④ Would some time later be convenient?

查看完整题目与答案

【单选题】 After driving for thirty miles, she suddenly realized that she （）in the wrong direction.

① was driving

② has been driving

③ had been driving

④ drove

查看完整题目与答案

【单选题】 I am not sure whether I can gain any profit from the investment, so I can’t make a(n) ____ tohelp you.

① exact

② defined

③ definite

④ sure

查看完整题目与答案

【单选题】 It was a(n) _______ achievement ― no one has ever won the championship five times before.

① single

② unique

③ only

④ sole

查看完整题目与答案

【单选题】 There are many children（）behaviour is generally unacceptable.

① who

② whom

③ whose

④ that

查看完整题目与答案

【单选题】 Happy New Year to you. ____________

① The same to you.

② Yes, I am happy.

③ What about you.

④ Very well, thanks.

查看完整题目与答案

【单选题】 She was so _____ in her job that she didn’t hear someone knocking at the door.

① attracted

② drawn

③ absorbed

④ concentrated

查看完整题目与答案