[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fjiaBi-KuJ-japAEKngLBe5Tf3S3eC0qlFdf8gUWH7IM":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2023-05-25 20:21:53",29441447,[8,9,10,11],"副边电压变化率越大,效率越高","副边电压变化率越大,效率越低","副边电压变化率越小,效率越低","副边电压变化率越小,效率越高",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},17,"b5ebbd2e552e7cfbbb137f937dad9e61","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F48eba3395437dd881b1b9275a0ad1028.png","电机学","exam_69656991","变压器单元测试","某三相变压器带电阻电感性负载运行,负载电流相同的条件下,负载侧功率因数越高,则( )",[21,32,40,49,52,60,67,75,82,90],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],29441444,[25,26,27,28],"电感性负载","纯电阻负载","电容性负载","无法判断","一台三相电力变压器,二次侧带对称负载,且输出电压恰好等于其二次侧的空载电压,则该负载一定是( )","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":39,"source":30,"type":31},[],29441445,[36,37,38],"减小约10%","增加约10%","不变","变压器原边匝数增加5%,副边匝数下降5%,激磁电抗将( )",{"answer":41,"createTime":5,"id":42,"options":43,"question":48,"source":30,"type":31},[],29441446,[44,45,46,47],"空载环流太大","不同联接组号的变压器变比不同","负载时激磁电流太大","电压变化率太大","联接组号不同的变压器不能并联运行,是因为( )",{"answer":50,"createTime":5,"id":6,"options":51,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":53,"createTime":5,"id":54,"options":55,"question":59,"source":30,"type":31},[],29441448,[56,57,58],"小于","等于","大于","变压器铁耗与铜耗相等时效率最大,设计电力变压器时应使铁耗( )铜耗",{"answer":61,"createTime":5,"id":62,"options":63,"question":66,"source":30,"type":31},[],29441449,[38,64,65],"增加10%","减少10%. (分析时假设磁路不饱和)","变压器的其它条件不变,外加电压增加10%,则原边漏抗 ,副边漏抗 和励磁电抗 将( )",{"answer":68,"createTime":5,"id":69,"options":70,"question":74,"source":30,"type":31},[],29441450,[71,72,73],"原副边相电势","原副边线电压","原副边线电势","三相变压器的变比是指( )之比",{"answer":76,"createTime":5,"id":77,"options":78,"question":81,"source":30,"type":31},[],29441451,[79,80,38],"减小","增大","单相变压器铁心叠片接缝增大,其他条件不变,则空载电流( )",{"answer":83,"createTime":5,"id":84,"options":85,"question":89,"source":30,"type":31},[],29441452,[86,87,88],"标么值成正比","大小成反比","标么值成反比","两台变压器并联运行时,其负荷与短路阻抗( )分配",{"answer":91,"createTime":5,"id":92,"options":93,"question":96,"source":30,"type":31},[],29441453,[94,38,95],"增大一倍","增加很多倍","如将额定电压为220\u002F110V的变压器的低压边误接到220V电压,则激磁电流将( )"]