[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fTCEy47B_D3mx87RnxFP1kr3cqAkHKMNoSjaTyxizDAA":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":18,"related":19,"source":29,"type":30},[],"2023-05-10 00:32:04",86874948,[8,9,10,11],"晶闸管的触发角大于电路的功率因素角时,晶闸管的导通角小于180度","晶闸管的触发角小于电路的功率因素角时,必须加宽脉冲或脉冲列触发,电路才能正常工作","晶闸管的触发角小于电路的功率因素角正常工作并达到稳态时,晶闸管的导通角为180度","晶闸管的触发角等于电路的功率因素角时,晶闸管的导通角不为180度",{"courseId":13,"courseImg":14,"courseName":15,"workId":16,"workName":17},"1000064427","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fecd2514b9dd93be0df7d83fde3d224a6.jpg","电力电子技术","32246008","电力电子技术教程考试","对于单相交流调压电路,下面说法错误的是( )",[20,31,40,43,52,61,70,78,87,92],{"answer":21,"createTime":5,"id":22,"options":23,"question":28,"source":29,"type":30},[],86874877,[24,25,26,27],"大功率三极管","逆阻型晶闸管","双向晶闸管","可关断晶闸管","逆导晶闸管是将大功率二极管与何种器件集成在一个管芯上而成 ( )","v2",0,{"answer":32,"createTime":5,"id":33,"options":34,"question":39,"source":29,"type":30},[],86874881,[35,36,37,38],"VD1","V1","VD2","V2","如下图,\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Faaed2b5ac5eccd4d28f6ab0ef81a1bd5.jpeg\">指出单相半桥电压型逆变电路工作过程中时间段t1~t2电流流经的通路( )(用V1,VD1,V2,VD2表示)",{"answer":41,"createTime":5,"id":6,"options":42,"question":18,"source":29,"type":30},[],[8,9,10,11],{"answer":44,"createTime":5,"id":45,"options":46,"question":51,"source":29,"type":30},[],86874977,[47,48,49,50],"141.4A","100A","50A","70.7A","晶闸管和负载R串联,接在正弦交流电源上,晶闸管的额定电流为100A,如果导电角为90°,允许通过的最大电流平均值是( )",{"answer":53,"createTime":5,"id":54,"options":55,"question":60,"source":29,"type":30},[],86874989,[56,57,58,59],"π-α","π+α","π-δ-α","π+δ-α","单相全控桥反电动势负载电路中,当控制角α大于不导电角δ时,晶闸管的导通角θ= ( )",{"answer":62,"createTime":5,"id":63,"options":64,"question":69,"source":29,"type":30},[],86875004,[65,66,67,68],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F13d23149193b6d3d19c536d1fc4fcf08.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F4014f6623b2620696b61e0a12d1a468c.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fe037ed4b317b0ef98f18d41a3954f6c1.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F105b59d043c30f4358f389bc4fdeb535.png\">","单相全控桥电阻性负载电路中,晶闸管可能随的电大正向电压为 ( )",{"answer":71,"createTime":5,"id":72,"options":73,"question":76,"source":29,"type":77},[],86875012,[74,75],"对","错","晶闸管串联时,给每只管子并联相同阻值的电阻R是均压措施.( )",3,{"answer":79,"createTime":5,"id":80,"options":81,"question":86,"source":29,"type":30},[],86875031,[82,83,84,85],"可靠触发区","不可靠触发区","安全工作区","不触发区","在晶闸管应用电路中,为了防止误触发,应使干扰信号的幅值限制在( )",{"answer":88,"createTime":5,"id":89,"options":90,"question":91,"source":29,"type":77},[],86875072,[74,75],"当温度降低时,晶闸管的触发电流会增加、正反向漏电流会下降.( )",{"answer":93,"createTime":5,"id":94,"options":95,"question":96,"source":29,"type":77},[],86875074,[74,75],"常用的过电流保护措施有快速熔断器、串进线电抗器、接入直流快速开关、控制快速移相使输出电压下降 .( )"]