[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f5s7_50SWyfWV8vdnVN_N1vzpslRUTMsDgLg44D_S0Aw":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2023-07-03 08:56:48",91277542,[8,9,10,11],"整流","逆变","直流变交流","对发电机进行灭磁",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},10,"2b5a2378ba6ddc91557a68533b1f1139","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F4ba4883a807b6bb93f9d77d801f9c415.png","电力系统自动自动化（本科）","work_25709949","第2章","三相全控桥式整流电路在0°< a <90°时,工作在( )状态",[21,32,41,50,59,68,77,84,87,96],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],91277535,[25,26,27,28],"并列时的电压、电流不超过允许值","并列时的电压、频率不超过允许值","并列时的电流、频率不超过允许值","并列瞬间的冲击电流不超过允许值,并列后能迅速进入同步运行","同步发电机并列操作的基本要求是","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],91277536,[36,37,38,39],"未加励磁,当发电机电压与并列点系统侧电压的幅值、频率、相位接近相等时","未加励磁,当发电机转速接近同步转速时","已加励磁,当发电机电压与并列点系统侧电压的幅值、频率、相位接近相等时","已加励磁,当发电机转速接近同步转速时","准同步并列的方法是,发电机并列合闸前( ),将发电机断路器合闸,完成并列操作",{"answer":42,"createTime":5,"id":43,"options":44,"question":49,"source":30,"type":31},[],91277537,[45,46,47,48],"电压和无功功率","电压和有功功率","频率和无功功率","频率和有功功率","同步发电机并网稳态运行时,调节励磁电流的大小将影响发电机输出的",{"answer":51,"createTime":5,"id":52,"options":53,"question":58,"source":30,"type":31},[],91277538,[54,55,56,57],"余弦函数关系","正比关系","反比关系","正弦函数关系","同步发电机的空载电动势Eq与励磁电流IEF成",{"answer":60,"createTime":5,"id":61,"options":62,"question":67,"source":30,"type":31},[],91277539,[63,64,65,66],"不变","增大","都有可能","减小","具有正调差特性的同步发电机,当输出的无功电流增大时,机端电压",{"answer":69,"createTime":5,"id":70,"options":71,"question":76,"source":30,"type":31},[],91277540,[72,73,74,75],"调差系数的大小","调差系数的正负","发电机基准电压","强励倍数","欲平移同步发电机的外特性曲线,需改变",{"answer":78,"createTime":5,"id":79,"options":80,"question":83,"source":30,"type":31},[],91277541,[64,81,63,82],"减少","不确定","三相全控桥式整流电路的输出电压平均值随控制角a增大而",{"answer":85,"createTime":5,"id":6,"options":86,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":88,"createTime":5,"id":89,"options":90,"question":95,"source":30,"type":31},[],91277543,[91,92,93,94],"把发电机转子绕组中的磁场储能迅速减弱到最小程度","把发电机定子绕组中的磁场储能迅速减弱到最小程度","把励磁机转子绕组中的磁场储能迅速减弱到最小程度","把励磁机定子绕组中的磁场储能迅速减弱到最小程度","同步发电机灭磁时是指",{"answer":97,"createTime":5,"id":98,"options":99,"question":104,"source":30,"type":31},[],91277544,[100,101,102,103],"机端电压","机端电流","机端频率","机端功率","同步发电机励磁调节装置在系统正常运行时,能按( )的变化自动调节励磁电流,维持系统电压值在给定水平"]