[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$ffR-DSjEz4Sis0EUKVzETy7lAZEosvtLi6g5ejDcAUFM":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":18,"related":19,"source":27,"type":37},[],"2023-05-07 20:52:59",4256176,[8,9,10,11],"变大","变小","相等","基本不变",{"courseId":13,"courseImg":14,"courseName":15,"workId":16,"workName":17},"1000006767","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F3af323d9f3479de6f95c232e0f0505f0.png","电机学","2619741","电机学教程考试","变压器负载运行时与空载运行时相比,变比K( )",[20,29,38,47,56,59,64,73,82,90],{"answer":21,"createTime":5,"id":22,"options":23,"question":26,"source":27,"type":28},[],4256146,[24,25],"对","错","变压器油既作绝缘介质又作泠却介质","v2",3,{"answer":30,"createTime":5,"id":31,"options":32,"question":36,"source":27,"type":37},[],4256153,[33,34,35],"线性","非线性","所有的","磁路计算如果存在多个磁动势,则对()磁路可应用叠加原理",0,{"answer":39,"createTime":5,"id":40,"options":41,"question":46,"source":27,"type":37},[],4256154,[42,43,44,45],"原动机输入的机械功率","原动机输出的机械功率","电枢端口吸收的电功率","电枢端口输出的电功率","直流发电机的额定功率指()",{"answer":48,"createTime":5,"id":49,"options":50,"question":55,"source":27,"type":37},[],4256156,[51,52,53,54],"负载特性","调节特性","效率特性","空载特性","()是直流发电机的磁化曲线",{"answer":57,"createTime":5,"id":6,"options":58,"question":18,"source":27,"type":37},[],[8,9,10,11],{"answer":60,"createTime":5,"id":61,"options":62,"question":63,"source":27,"type":28},[],4256179,[24,25],"不管变压器饱和与否,其参数都是保持不变的",{"answer":65,"createTime":5,"id":66,"options":67,"question":72,"source":27,"type":37},[],4256180,[68,69,70,71],"减小","不变","增大","不确定","变压器制造时,硅钢片接缝变大,那么此台变压器的励磁电流将( )",{"answer":74,"createTime":5,"id":75,"options":76,"question":81,"source":27,"type":37},[],4256207,[77,78,79,80],"Ea下降30%","主磁通下降30%","Ea和主磁通都下降30%","端电压下降30%","一台直流发电机,由额定运行状态转速下降为原来的30℅,而励磁电流及电枢电流不变,则()",{"answer":83,"createTime":5,"id":84,"options":85,"question":89,"source":27,"type":37},[],4256211,[86,87,88],"与电枢回路同时接入","比电枢回路先接入","比电枢回路后接入","起动直流电动机时,磁路回路应()电源",{"answer":91,"createTime":5,"id":92,"options":93,"question":97,"source":27,"type":37},[],4256220,[94,95,96],"Ea&gt;U","Ea=0","Ea&lt;U","直流电机运行在电动机机状态时,其()"]