[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fknH5ByVwHIDrl0wzey3HEtXK-yvTJ5ej3XKh-QWdFRU":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":8,"question":15,"related":16,"source":20,"type":21},[],"2025-11-10 21:24:47",231551888,[],{"count":9,"courseId":10,"courseImg":11,"courseName":12,"workId":13,"workName":14},10,"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","work_47381580","第11次作业","已知\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F83374954e6f9c4907f9826a576e4d6e7.webp\"> V, 则 \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F296328a18cbba3b94974b45a0117e9eb.webp\"> = V, U= V, &omega;= rad\u002Fs, f= Hz, T = ms , &phi;= 度",[17,22,27,32,37,42,47,52,57,62],{"answer":18,"createTime":5,"id":6,"options":19,"question":15,"source":20,"type":21},[],[],"v1",2,{"answer":23,"createTime":5,"id":24,"options":25,"question":26,"source":20,"type":21},[],231551889,[],"正弦交流电1秒内变化的次数叫作正弦交流电的 ,若某一正弦交流电在1秒内变化了60次,则该正弦交流电频率为 Hz",{"answer":28,"createTime":5,"id":29,"options":30,"question":31,"source":20,"type":21},[],231551890,[],"在正弦交流电完成一次周期性变化所用的时间叫",{"answer":33,"createTime":5,"id":34,"options":35,"question":36,"source":20,"type":21},[],231551891,[],"我国和世界大多数国家的电力工业的标准频率(简称工频)都是 Hz,也有少数国家如美国和日本的工频采有 Hz",{"answer":38,"createTime":5,"id":39,"options":40,"question":41,"source":20,"type":21},[],231551892,[],"两个同频率正弦电压的相位差为0度,则可得到这两个正弦电压相位",{"answer":43,"createTime":5,"id":44,"options":45,"question":46,"source":20,"type":21},[],231551893,[],"生活中各种交流电器设备铭牌所标的电压、电流额定值,均是它们的",{"answer":48,"createTime":5,"id":49,"options":50,"question":51,"source":20,"type":21},[],231551894,[],"两个同频率正弦电压的相位差为180度,则可得到这两个正弦电压相位",{"answer":53,"createTime":5,"id":54,"options":55,"question":56,"source":20,"type":21},[],231551895,[],"通常将某一瞬间交流电的值称为交流电的",{"answer":58,"createTime":5,"id":59,"options":60,"question":61,"source":20,"type":21},[],231551896,[],"我国的电力工频为50Hz,则周期为 s,角频率为 rad\u002Fs",{"answer":63,"createTime":5,"id":64,"options":65,"question":66,"source":20,"type":21},[],231551897,[],"用电压表测得正弦交流电路的电压为220V,其最大值为 V"]