相关试题
【判断题】
在 10kV 及以下的操作中，当无遮拦时，作业人体所携带的工具与带电体之间的距离应不小于（ 0.7 ）米。
【判断题】
（保护接地）是为了人身安全，将电气装置中平时不带电，但可能因绝缘损坏而带上危险的对地电压的外露导电部分，与大地可靠连接。
【判断题】
人体电击致死的主要原因是心室颤动电流引起（血液循环停止）而死。
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弹簧操作机构的分闸弹簧是在断路器（合闸）时储能的。
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可移动手车式高压开关柜断路器在合闸位置时（不能）移动手车。
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电压互感器的额定二次电压一般为（ 100） V。
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造成高压电容器组爆炸的主要原因之一是（内部发生极间短路）。
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在三相四线制中，当三相负荷不平衡时，三相电压相等，中性线电流（不等于零）。
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被测量交流电流如大于（ 5） A 时，一般需要配合电流互感器进行测量。
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用万用表测量电阻时，则需要将（表内电池）作为测量电源。
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手车式开关柜，小车已推入，开关合入。称之为（运行状态）
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并列运行的变压器，若短路电压不等，则（变压器负载分配不合理）
【判断题】
变压器型号第一项用字母 S 表示（三相）变压器
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电气安全管理人员应具备必要的（电气安全）知识，并要根据实际情况制定安全措施，有计划地组织安全管理生产
【判断题】
对于一类负荷的供电，应由至少（两个）独立的电源供电
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35kV 及以上用户受电端电压的波动幅度不应超过额定电压的（ +-5%）
【判断题】
为了考核电气设备的绝缘水平，我国决定， 10kV 的最高工作电压为（ 12） kV
【判断题】
过电压作用于电气设备时可引起设备（绝缘击穿）
【判断题】
10kV 及以下线路与 35kV 线路同杆架设时，导线间的垂直距离不就小于（ 2） m
【判断题】
新敷设的带中间接头的电缆线路，在投入运行（三个月）后，应进行预防性试验
【判断题】
我国电缆产品的型号由几个（大写汉语拼音字母）和阿拉伯数字组成
【判断题】
下列过程不易产生静电的是（液体冲刷金属）
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把电气设备正常情况下不带电的金属部分与电网的保护零线进行连接，称作（保护接零）
【判断题】
电气设备的绝缘是一个重要的技术指标，是安全检查的重要内容，电气绝缘检查主要是检查绝缘是否老化破损，受潮和（绝缘电阻）等
【判断题】
摆脱电流是人触电后能自行摆脱带电体的（最大电流）
【判断题】
C D10 中的 D 表示（电磁）操作机构
【判断题】
箱式变电站所在接地应共用一组接地装置，其接地电阻应小于（ 4） Ω
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高压断路器型号等一单元代表名称，如 L 表示（六氟化硫）断路器
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液压操作机构适用于（ 110~220） kV 等级的断路器
【判断题】
手动操作断路器跳闸时，自动重合闸继电保护处于（不动作）状态
【判断题】
定时限电流保护具有（动作时间不变）的特点
【判断题】
变压器差动保护器从原理上能够保证选择性，实现内部故障时（动作）
【判断题】
判断二极管的好坏应用万用表的（电阻档）档位
【判断题】
判断二极管的好坏应用万用表的（电阻档）档位
【判断题】
交流电的三要素是指最大值、频率及（初相角）
【判断题】
发现触电伤员呼吸、心跳停止时，应立即在现场用（心肺复苏法）就地抢救，以支持呼吸和循环
【判断题】
对于接地电阻测量仪探针位置说法正确的是（将电位探针插在离接地体 20m的地下，电流探针插在；离地体 40m的地下）
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