[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fmU4Jx5KF698g9bExqpW9xwu-XKsFWOevvhgUzhQVi-0":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":31,"type":32},[],"2023-11-21 16:03:40",107474341,[8,9,10,11],"3","6","2","1",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},24,"887ac2a913b887e558b9422e57d2922b","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd9eaef8ea2690faba12fec4caf2d0cf6.jpg","电机学","57e2101199f94653ae77536d5166e5ae","","三相双层短距分布交流绕组,极对数为3,则每相有( )个线圈组",[21,33,41,49,57,66,75,84,93,96],{"answer":22,"createTime":23,"id":24,"options":25,"question":30,"source":31,"type":32},[],"2023-11-21 16:03:39",107474328,[26,27,28,29],"0°","20°","60°","90°","1.三相绕组的相带可能是( )","v1",0,{"answer":34,"createTime":23,"id":35,"options":36,"question":40,"source":31,"type":32},[],107474331,[37,38,39,11],"20","50","40","2.一台4对极的三相交流电机,当磁场旋转速度为300r\u002Fmin时,其电流频率为( )Hz",{"answer":42,"createTime":23,"id":43,"options":44,"question":48,"source":31,"type":32},[],107474333,[45,11,46,47],"0","0<kw<1","kw>1","4.双层长距绕组的绕组系数可能为()",{"answer":50,"createTime":23,"id":51,"options":52,"question":56,"source":31,"type":32},[],107474335,[9,53,54,55],"7","8","9","三相四极36槽交流绕组,若希望尽可能削弱5次空间谐波磁势,绕组节距y1应取( )",{"answer":58,"createTime":23,"id":59,"options":60,"question":65,"source":31,"type":32},[],107474337,[61,62,63,64],"<1",">1","=1","上述皆可能","交流绕组的绕组系数通常为( )",{"answer":67,"createTime":5,"id":68,"options":69,"question":74,"source":31,"type":32},[],107474338,[70,71,72,73],"恒定磁势","脉振磁势","圆形旋转磁势","静止磁势","单相交流绕组的基波磁势是( )",{"answer":76,"createTime":5,"id":77,"options":78,"question":83,"source":31,"type":32},[],107474339,[79,80,81,82],"都减小","基波电势不变,谐波电势减小","都不变","基波电势减小,谐波电势不变","交流绕组采用短距与分布后,基波电势与谐波电势( )",{"answer":85,"createTime":5,"id":86,"options":87,"question":92,"source":31,"type":32},[],107474340,[88,89,90,91],"5倍","等于","1\u002F5倍","1\u002F2倍","三相合成磁动势中的5次谐波磁势,在气隙空间以基波磁势的转速旋转",{"answer":94,"createTime":5,"id":6,"options":95,"question":19,"source":31,"type":32},[],[8,9,10,11],{"answer":97,"createTime":5,"id":98,"options":99,"question":104,"source":31,"type":32},[],107474342,[100,101,102,103],"正弦波","矩形波","阶梯波","尖顶波","一个整距线圈产生的磁势波形为( )"]