[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fF-WnvjnVofQoKwCxiyFAnRWsoqGakP2vpdBAECVVuTg":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":8,"question":15,"related":16,"source":23,"type":24},[],"2024-05-08 16:19:05",142110054,[],{"count":9,"courseId":10,"courseImg":11,"courseName":12,"workId":13,"workName":14},134,"43140bdc2eaaea9239b9f2201edb770a","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9c1e48361b00f3ee2086f4e259ed792b.jpg","题库1","work_34698749","新建作业20240429171413","直流发电机电磁转矩的方向和电枢旋转方向 ____ ,直流电动机电磁转矩的方向和电枢旋转方向 ____ . (填空题)",[17,25,31,37,42,47,52,57,62,67],{"answer":18,"createTime":19,"id":20,"options":21,"question":22,"source":23,"type":24},[],"2024-05-08 16:19:00",142110038,[],"直流发电机输出的额定功率是指 ____ . (填空题)","v1",2,{"answer":26,"createTime":27,"id":28,"options":29,"question":30,"source":23,"type":24},[],"2024-05-08 16:19:01",142110039,[],"直流电机主磁路未饱和时,励磁磁通势主要消耗在 ____ 部分. (填空题)",{"answer":32,"createTime":33,"id":34,"options":35,"question":36,"source":23,"type":24},[],"2024-05-08 16:19:04",142110042,[],"直流电动机调速时,在励磁回路中增加调节电阻,可使转速 ____ ,而在电枢回路中增加调节电阻,可使转速 ____ . (填空题)",{"answer":38,"createTime":33,"id":39,"options":40,"question":41,"source":23,"type":24},[],142110045,[],"电磁功率与输入功率之差,对于直流发电机包括 ____ 损耗;对于直流电动机包括 ____ 损耗. (填空题)",{"answer":43,"createTime":33,"id":44,"options":45,"question":46,"source":23,"type":24},[],142110048,[],"降低励磁时,直流电动机的速度也相应降低. ____ (填空题)",{"answer":48,"createTime":33,"id":49,"options":50,"question":51,"source":23,"type":24},[],142110050,[],"直流电动机一般采用 ____ 和 ____ 的方法,起动电流限制为额定电流的 ____ . (填空题)",{"answer":53,"createTime":5,"id":54,"options":55,"question":56,"source":23,"type":24},[],142110051,[],"直流电机的励磁方式有 ____ 、 ____ 、 ____ 和 ____ 四种形式. (填空题)",{"answer":58,"createTime":5,"id":59,"options":60,"question":61,"source":23,"type":24},[],142110052,[],"如何改变并励、串励、复励电动机的转向? 并励、串励、复励直流电动机要改变其转动方向必须是在保证励磁绕组 ____ 的接线不变,而把电枢绕组 ____ 的两端对调,即可改变电动机的转动方向. (填空题)",{"answer":63,"createTime":5,"id":64,"options":65,"question":66,"source":23,"type":24},[],142110053,[],"直流发电机中的电磁转矩方向与转子的旋转方向 ____ ,因此电磁转矩为 ____ 转矩;直流电动机中的电磁转矩方向与转子的旋转方向 ____ ,因此电磁转矩为 ____ 转矩. (填空题)",{"answer":68,"createTime":5,"id":6,"options":69,"question":15,"source":23,"type":24},[],[]]