[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fjU1OB1KH4xMYDB7rWbpaF1EtOl0pzzq37mA3chASu3w":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":10,"question":17,"related":18,"source":24,"type":66},[],"2025-11-17 14:45:54",235708679,[8,9],"正确","错误",{"count":11,"courseId":12,"courseImg":13,"courseName":14,"workId":15,"workName":16},26,"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","work_46564826","作业2","磁导率μ越大,则表明在相同的磁动势作用下产生的磁场越强,因此在工程上人们总是采用磁导率 μ 尽量大的材料来组成电机、电器及各种磁铁的磁路",[19,26,31,36,41,46,51,56,61,67],{"answer":20,"createTime":5,"id":21,"options":22,"question":23,"source":24,"type":25},[],235708670,[],"如果流过导线或者线圈的电流发生变化,电流所产生的 也会发生变化,于是在导线或者线圈由于交链的磁通变化而产生","v1",2,{"answer":27,"createTime":5,"id":28,"options":29,"question":30,"source":24,"type":25},[],235708671,[],"铁心损耗包括 损耗、 损耗两部分损耗,二者合称 损耗",{"answer":32,"createTime":5,"id":33,"options":34,"question":35,"source":24,"type":25},[],235708672,[],"铁磁材料被磁化的外因是有 ,内因是有",{"answer":37,"createTime":5,"id":38,"options":39,"question":40,"source":24,"type":25},[],235708673,[],"根据磁滞回线的不同,铁磁材料一般可分为 磁性材料 . 磁性材料 和 磁性材料 三类",{"answer":42,"createTime":5,"id":43,"options":44,"question":45,"source":24,"type":25},[],235708674,[],"变压器的损耗包括 损耗和 损耗",{"answer":47,"createTime":5,"id":48,"options":49,"question":50,"source":24,"type":25},[],235708675,[],"一台单相变压器的容量为 SN=2000VA,一次绕组额定电压为 220V,二次绕组额定电压为 110V,则一次绕组与二次绕组的额定电流分别为 I1N= A,I2N= A",{"answer":52,"createTime":5,"id":53,"options":54,"question":55,"source":24,"type":25},[],235708676,[],"有一台单相变压器,已知 U1=220V,I2=10A,R=10Ω,则 U2= V,I1= A",{"answer":57,"createTime":5,"id":58,"options":59,"question":60,"source":24,"type":25},[],235708677,[],"一台多绕组变压器 ,原绕组额定电压为 220V ,副绕组额定电压分别为 110V、36V、12V,原绕组为 1500 匝,副绕组的匝数分别为 匝、 匝、 匝",{"answer":62,"createTime":5,"id":63,"options":64,"question":65,"source":24,"type":66},[],235708678,[8,9],"在相同条件下,铁心磁导率μ越大,其线圈产生的磁场就越强",3,{"answer":68,"createTime":5,"id":6,"options":69,"question":17,"source":24,"type":66},[],[8,9]]