[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fcOB8INSWbrWbLdewQEWUuhZZud1D4BR4H_mYc7CBbWI":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",107474339,[8,9,10,11],"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",{"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","","交流绕组采用短距与分布后,基波电势与谐波电势( )",[21,33,42,50,59,68,77,80,89,96],{"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":41,"source":31,"type":32},[],107474331,[37,38,39,40],"20","50","40","1","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":43,"createTime":23,"id":44,"options":45,"question":49,"source":31,"type":32},[],107474333,[46,40,47,48],"0","0<kw<1","kw>1","4.双层长距绕组的绕组系数可能为()",{"answer":51,"createTime":23,"id":52,"options":53,"question":58,"source":31,"type":32},[],107474335,[54,55,56,57],"6","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":60,"createTime":23,"id":61,"options":62,"question":67,"source":31,"type":32},[],107474337,[63,64,65,66],"<1",">1","=1","上述皆可能","交流绕组的绕组系数通常为( )",{"answer":69,"createTime":5,"id":70,"options":71,"question":76,"source":31,"type":32},[],107474338,[72,73,74,75],"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":78,"createTime":5,"id":6,"options":79,"question":19,"source":31,"type":32},[],[8,9,10,11],{"answer":81,"createTime":5,"id":82,"options":83,"question":88,"source":31,"type":32},[],107474340,[84,85,86,87],"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":90,"createTime":5,"id":91,"options":92,"question":95,"source":31,"type":32},[],107474341,[93,54,94,40],"3","2","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",{"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( )"]