[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fBerk9opsvrNlOIl6pM8220i5jVaAHIBFwcnVmaXpXsM":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":28,"type":29},[],"2025-11-30 16:58:12",246018027,[8,9,10,11],"电流超前电压 90°","电流滞后电压 90°","两者同相位","两者反相位",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},24,"7fb3dc032ac85bc04a5049c3266d0872","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0cb6c0c680e54a9d94c02370771cd96c.jpg","电工电子技术","work_47324857","20251018电工电子-交流电","纯电容元件在正弦交流电路中,其电流与电压的相位关系是( )",[21,30,38,46,55,64,69,77,86,89],{"answer":22,"createTime":5,"id":23,"options":24,"question":27,"source":28,"type":29},[],246018019,[25,26],"同大小","同频率","比较两个正弦量的相位关系, 必须满足( )","v1",0,{"answer":31,"createTime":5,"id":32,"options":33,"question":37,"source":28,"type":29},[],246018020,[34,35,36],"50V","141V","70.72V","如果正弦波的峰值电压为 100V,则其有效值为( )",{"answer":39,"createTime":5,"id":40,"options":41,"question":45,"source":28,"type":29},[],246018021,[42,43,44],"开路","电阻","短路\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fefe3de4e7e19e9c2715ff4e1653fccdc.jpg\">\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd8a6428329908437d3f11ddc7062105c.jpg\">4、已知正弦电压 , , ,则超前\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff3f7b63a0b9354b6f948758b46b4405b.png\">.( C)A.-90°B.210°C.-150°D.-120°","对于直流稳态电路, 电容相当于( )",{"answer":47,"createTime":5,"id":48,"options":49,"question":54,"source":28,"type":29},[],246018022,[50,51,52,53],"最大值","角频率","周期","初相位","正弦交流电的三要素不包括以下哪一项?( )",{"answer":56,"createTime":5,"id":57,"options":58,"question":63,"source":28,"type":29},[],246018023,[59,60,61,62],"220V","220√2 V","311V","314V","已知正弦交流电压 u = 220√2 sin (314t + 30°) V,其有效值为( )",{"answer":65,"createTime":5,"id":66,"options":67,"question":68,"source":28,"type":29},[],246018024,[8,9,10,11],"在纯电阻电路中,电流与电压的相位关系是( )",{"answer":70,"createTime":5,"id":71,"options":72,"question":76,"source":28,"type":29},[],246018025,[43,73,74,75],"容抗","感抗","阻抗","纯电感元件对正弦交流电的阻碍作用称为( )",{"answer":78,"createTime":5,"id":79,"options":80,"question":85,"source":28,"type":29},[],246018026,[81,82,83,84],"增大","减小","不变","先增大后减小","当正弦交流电的频率增大时,纯电感元件的感抗会( )",{"answer":87,"createTime":5,"id":6,"options":88,"question":19,"source":28,"type":29},[],[8,9,10,11],{"answer":90,"createTime":5,"id":91,"options":92,"question":97,"source":28,"type":29},[],246018028,[93,94,95,96],"318Ω","31.8Ω","3.18Ω","0.318Ω","已知某纯电容元件的电容 C = 10μF,接在频率 f = 50Hz 的正弦交流电路中,其容抗 Xc 约为( )"]