转帖—udlk “电厂试题”

14、防直击雷的保护装置有 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;和 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;。<br/>15、对继电保护的基本要求是 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;、 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;、 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;、 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;。<br/>16、衡量电能质量的三个指标，通常是指 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;、 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;、和 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;。<br/>17、电力系统的过电压可分为以下四种类型 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;、 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;、 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;、 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;。<br/>18、电压调整的方式一般分为 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;、 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;、 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;。逆调压、恒调压、顺调压<br/>19、电力系统中的设备一般划分为 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;、 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;、 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;、 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;。<br/>20、“两票三制”中的“两票”是指 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;和 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;。“三制” &nbsp; &nbsp;是指 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;、 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;、 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;。<br/>二、选择题<br/>1、在发电厂使用的综合重合闸装置中，不启动重合闸的保护有（ &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;）。<br/>&nbsp;A、高频保护 &nbsp; &nbsp; &nbsp; &nbsp;B、阻抗保护 &nbsp; &nbsp; &nbsp; &nbsp;C、零序保护 &nbsp; &nbsp; &nbsp; &nbsp;D、母线保护<br/>2、雷电引起的过电压称为（ &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;）<br/>A、 &nbsp;内部过电压 &nbsp; &nbsp;B、工频过电压C、大气过电压 &nbsp; &nbsp; &nbsp; &nbsp;D、操作过电压<br/>&nbsp; &nbsp; &nbsp;3、距离保护Ⅰ段一般保护线路全长（ &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;）左右。<br/>&nbsp; &nbsp; &nbsp;A、40% &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;B、60% &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;C、80% &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;D、90%<br/>&nbsp; &nbsp; &nbsp;4、电气设备检修工作人员，在10KV配电装置上工作时，其正常活动范围与带电设备的安全距离是（ &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;）<br/>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;A、0.35m &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;B、0.4m &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;C、0.6m &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;D、0.7M &nbsp; &nbsp; &nbsp; &nbsp;<br/>5、我国规定发电机的额定入口风温是（A &nbsp; &nbsp;）<br/>&nbsp;A、40℃ &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;B、35℃ &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;C、30℃ &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;D、25℃<br/>6、线路发生非全相运行时，不能躲开非全相运行的保护将（ &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;）<br/>&nbsp; &nbsp; &nbsp;A、自动退出 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;B、不自动退出 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;C、将其手动退出 &nbsp; &nbsp;<br/>D、不自动退出也不起作用<br/>&nbsp; &nbsp; &nbsp;7、发电机横差保护的不平衡电流主要是由（ &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;）引起的。<br/>A、 &nbsp;基波 &nbsp; &nbsp; &nbsp; &nbsp;B、二次谐波 &nbsp; &nbsp; &nbsp; &nbsp;C、三次谐波 &nbsp; &nbsp; &nbsp; &nbsp;D、五次谐波<br/>&nbsp; &nbsp; &nbsp;8、发生接地时，一般情况下人体离接地体的距离（ &nbsp; &nbsp;C &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;）跨步电压变为零。<br/>A、 &nbsp;10m以外 &nbsp; &nbsp;B、15m以外 &nbsp; &nbsp;C、20m以外 &nbsp; &nbsp;D、30m以外<br/>&nbsp; &nbsp; &nbsp;9、发电机转子过电压是由于运行中（ &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;）引起的。<br/>A、灭磁开关突然合入 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;B、灭磁开关突然断开<br/>C、励磁回路一点接地 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;D、励磁回路两点接地<br/>&nbsp; &nbsp; &nbsp;10、表现断路器开断能力的参数是（ &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;）A、开断电流 &nbsp; &nbsp;B、额定电流 &nbsp; &nbsp;C、额定电压 &nbsp; &nbsp;D、额定容量]