【单选题】
(31067)运用客车质量鉴定条件中,发电车机房排气扇作用不良属___故障。
A. A类
B. B类
C. C类
D. D类
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答案
B
解析
暂无解析
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(31077)机械图样中,标准圆角R8max的表示意义是___。
A. 此圆角最大8mm,最小为Omm
B. 此圆角最大8mm,最小不限制
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(31083)在发电车中,可实现并车机组的负载平稳转移的控制器是___。
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(31084)关于康明斯发电车中并车电路中的PIG21模块叙述中,错误的是___。
A. PIG21就是自动同步器
B. PIG21又叫同步脉冲继电器
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(31092)康明斯发电车所使用的1FC5356发电机的励磁机的特点是___。
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C. 定子发电,转子为永久磁铁
D. 转子发电,定子为永久磁铁
【单选题】
(31100)康明斯发电车中,若超速保护板发生故障时仍需使用该机组时,可采取___的措施强行起机。
A. 直接拆除超速保护板
B. 拆除超速保护板后短接箱中5、7号端子
C. 拆除超速保护板后短接箱中7、9号端子
D. 拆除超速保护板后短接箱中9、11号端子
【单选题】
(31101)康明斯发电车中501K控制器中,对发动机的超速保护是通过___对发动机的转速检测。
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