[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fHZg9BVpGlJ7SyCW-x3vEy2cQCpJggqrcaIpdsiB8YZ4":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":21,"type":22},[],"2025-12-26 16:38:40",287907787,[8,9,10,11],"过载保护的电流","能够承受的浪涌电流","能够分断动作的最大电流","能够承受电机起动而不分断的电流",{"courseId":13,"courseImg":14,"courseName":15},"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","电机及其起动控制箱在使用中,主回路的空气断路器为基本配置,除额定电流外,还标有分断电流,这是指断路器",[18,23,32,41,47,56,65,74,83,92],{"answer":19,"createTime":5,"id":6,"options":20,"question":16,"source":21,"type":22},[],[8,9,10,11],"v1",0,{"answer":24,"createTime":5,"id":25,"options":26,"question":31,"source":21,"type":22},[],287907788,[27,28,29,30],"失压保护","欠压保护","缺相保护","过载保护","当电源电压由于某种原因消失时,三相异步电动机会自动停车.当电源电压恢复时,三相异 步电动机不会自动起动,只有在操作人员按下起动按钮后,三相异步电动机才可起动,这种保护称为",{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":21,"type":22},[],287907789,[36,37,38,39],"热继电器具有对电路进行短路和过载保护的功能","热继电器是利用过载时的热效应来使保护电器动作以实现短路保护的","自动空气开关具有对电路进行短路或过载保护的功能","过电流继电器是最常用的短路保护继电器","关于短路保护与过载保护的实现及保护器件的选择,叙述正确的是",{"answer":42,"createTime":5,"id":43,"options":44,"question":46,"source":21,"type":22},[],287907790,[45,28,29,30],"零压保护","当电源电压由于某种原因消失时,三相异步电动机会自动停车.当电源电压恢复时,三相异 步电动机不会自动起动,只有在操作人员按下起动按钮后,三相异步电动机才可起动,这种 保护称为",{"answer":48,"createTime":5,"id":49,"options":50,"question":55,"source":21,"type":22},[],287907791,[51,52,53,54],"1KM和2KM常开触点","1KM和2KM常闭触点","1SB 、2SB","3SB 、4SB","如图所示电路起互锁作用的是 .\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb4093d6ba6a1bba731000392491f038e.png\">",{"answer":57,"createTime":5,"id":58,"options":59,"question":64,"source":21,"type":22},[],287907792,[60,61,62,63],"常开;并联","常开;串联","常闭;并联","常闭;串联","电动机正、反转控制线路中,常把正转接触器的 触 点 _在反转接触器线圈的 线路中,实现互锁控制",{"answer":66,"createTime":5,"id":67,"options":68,"question":73,"source":21,"type":22},[],287907793,[69,70,71,72],"在接触器控制电路中,将接触器的辅助常闭触点并联到对方的线圈回路中,即可构成电气互锁控制","在接触器控制电路中,将接触器的辅助常开触点串联到对方的线圈回路中,即可构成电气互锁控制","要求两个电器不能同时工作,当一个工作时另一个不能工作,这种控制关系称为互锁控制","要求某一电器必须在另一电器运行后才能起动的控制关系称为互锁控制","关于互锁控制,下列叙述正确的是",{"answer":75,"createTime":5,"id":76,"options":77,"question":82,"source":21,"type":22},[],287907794,[78,79,80,81],"自锁控制","联锁控制","互锁控制","点动控制","船舶电动机的正、反转控制通常需采用",{"answer":84,"createTime":5,"id":85,"options":86,"question":91,"source":21,"type":22},[],287907795,[87,88,89,90],"两地起动","正、反转控制","点动与连续运转","联锁","如图所示电动机控制电路,该线路能实现 控 制.\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fdc3c90ef7a31652f6ebdae59d9bf96a0.png\">",{"answer":93,"createTime":5,"id":94,"options":95,"question":100,"source":21,"type":22},[],287907796,[96,97,98,99],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F782fa2a21a150eaeb57f04a481d7c504.png\">;点动","SB2;点动","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F214c4de85d80805f06ebaa17abdcd027.png\">;点动","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9401e579c7ecc9b0f9317eefef47d931.png\">;自锁连续","如图所示电路,为电动机自锁连续控制和点动控制局部电路,当按下 可实现控制.\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fdcd8c0393fbba2fd6bd4ce3684c055c8.png\">"]