[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fMOXaBr6ZXMiqr-8YfX_M9Vtvt84lCmKoAqesZDMowiE":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":18,"related":19,"source":29,"type":40},[],"2023-05-09 23:46:04",967840726,[8,9,10,11],"活动衔铁位于中间位置时,即无位移,输出电压为0","活动衔铁位于中间位置以上时,即位移大于0,输出电压与输入电压同频同相","活动衔铁位于中间位置以下时,即位移小于0,输出电压与输入电压同频反相","活动衔铁位于中间位置以下时,即位移小于0,输出电压与输入电压不同频且不同相",{"courseId":13,"courseImg":14,"courseName":15,"workId":16,"workName":17},"1000000801","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fe9a2880870573f15f83113270aea935f.png","传感器原理与应用","54530743","第五章单元测试","不考虑零点残余电压情况下,螺线管差动变压器电感式传感器的基本特性( )",[20,31,41,49,58,63,72,75,84,93],{"answer":21,"createTime":5,"id":22,"options":23,"question":28,"source":29,"type":30},[],967840720,[24,25,26,27],"磁路磁阻的变化","自感系数L或互感系数M的变化","线圈长度的变化","铁芯的移动量","电感式传感器把输入物理量(如位移、振动等)转为为( ),进而通过测量电路输出电压或电流变化量,实现对非电量的测量","v2",0,{"answer":32,"createTime":5,"id":33,"options":34,"question":39,"source":29,"type":40},[],967840721,[35,36,37,38],"差动式比单线圈式灵敏度提高一倍","差动式比单线圈式自感系数L更大","差动式比单线圈式线性度得到明显改善","差动式比单线圈式结构更简单","差动变气隙电感式传感器与单线圈变气隙厚度电感式传感器的优势体现在( )",1,{"answer":42,"createTime":5,"id":43,"options":44,"question":47,"source":29,"type":48},[],967840722,[45,46],"对","错","变气隙厚度电感式传感器测量电路输入电压来自直流电压源.( )",3,{"answer":50,"createTime":5,"id":51,"options":52,"question":57,"source":29,"type":40},[],967840723,[53,54,55,56],"衔铁上、下移动时,输出电压相位相反","衔铁上、下移动时,输出电压随衔铁的位移而变化","衔铁上、下移动时,输出电压能指示移动方向","衔铁上、下移动时,输出电压为交流电压","下列关于变磁阻电感式传感器,交流电桥和变压器式交流电桥测量电路描述正确的是( )",{"answer":59,"createTime":5,"id":60,"options":61,"question":62,"source":29,"type":48},[],967840724,[45,46],"对于变磁阻式传感器,谐振调频电路当电感L发生变化时,输出频率f随之线性变化,根据频率大小即可确定被测量的值.( )",{"answer":64,"createTime":5,"id":65,"options":66,"question":71,"source":29,"type":40},[],967840725,[67,68,69,70],"传感器两个二次绕组的电气参数与几何尺寸不对称,构成零点残余电压基波","磁性材料磁化曲线的非线性(磁饱和、磁滞),产生了零点残余电压高次谐波","励磁电压本身含高次谐波","输出负载的影响","差动变压器电感式传感器产生零点残余电压的原因有( )",{"answer":73,"createTime":5,"id":6,"options":74,"question":18,"source":29,"type":40},[],[8,9,10,11],{"answer":76,"createTime":5,"id":77,"options":78,"question":83,"source":29,"type":40},[],967840727,[79,80,81,82],"能消除零点残余电压","能反映衔铁移动的方向","能对差动变压器的电感式传感器的输出电压进行幅度解调","能反映衔铁位移大小","关于差动变压器电感式传感器测量电路之相敏检波电路( )",{"answer":85,"createTime":5,"id":86,"options":87,"question":92,"source":29,"type":40},[],967840728,[88,89,90,91],"是一种自感式传感器","是一种互感式传感器","是根据电涡流效应制成的传感器","是一种只能感应金属导体的传感器","下列对电涡流电感式传感器描述正确的是( )",{"answer":94,"createTime":5,"id":95,"options":96,"question":101,"source":29,"type":40},[],967840729,[97,98,99,100],"线圈复阻抗实部(等效电阻)增大,抗虚部(等效电感)减小","线圈复阻抗实部(等效电阻)减小,抗虚部(等效电感)增大","线圈的等效机械品质因数增大","线圈的等效机械品质因数减小","电涡流电感式传感器受电涡流效应的影响( )"]