【单选题】
下列哪个部件属于高温水冷却部件。___
A. 增压器
B. 机油热交换器
C. 中冷器
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答案
A
解析
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东风7C型机车C5型联合调节器技术参数规定其转速波动率小于或等于___。
A. 0.5℅
B. 1℅
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12V240ZJ6型系列柴油机的几何压缩比为___。
A. 12:1
B. 11:1
C. 12.5:1
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当增压器进油压力降到一定值后,YK4和___油压继电器动作使柴油机停机。
A. YK1
B. YK8
C. YK2
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DYTQ电源是在合___后接通。
A. XK
B. AK1
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【单选题】
东风7C型机车使用固定发电运行遇风泵打风时,只有___能吸合。
A. YC1
B. YC2
C. YC1、YC2
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东风7C型机车运行中突然卸载,电器失电顺序是___。
A. LLC→LC→C1~C6
B.
C. 1~C6→LC→LLC C LC→C1~C6→LLC
【单选题】
东风7C型机车启机按下AN1,QC不吸合的原因有___。
A. FLC反联锁不良
B. QBC正联锁不良
C. QXC反联锁不良
【单选题】
东风7C型机车启机时,QD转动,柴油机不爆发的原因有___。
A. Rdls断路
B. YK4故障
C.
D. LS故障
【单选题】
东风7C型机车QD不发电的原因有___。
A. ZK1跳开
B. ZK2跳开
C. ZK12跳开
【单选题】
东风7C型机车电流表显示放电,电压表显示96V的原因是___。
A. RD1熔断
B. RD2熔断
C. RD3熔断
【单选题】
东风7C型机车加载运行中,牵引发电机电压应不超过___。
A. 600V
B. 770V
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东风7C型机车运用中抱轴瓦温度不得高于___。
A. 50℃
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东风7C型内燃机车辅助传动装置中共有___根万向轴。
A. 3
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C. 5
【单选题】
东风7C型机车机油系统有___种不同的循环回路。
A. 4
B. 5
C. 6
【单选题】
东风7C型机车转向架与车体之间的总横动量为___。
A. ±18mm
B. ±21mm
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【单选题】
东风7C型机车共装有8个砂箱。每个秒箱可储砂___。
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【单选题】
东风7C型机车车体的承载方式为___。
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【单选题】
燃油系统油压低的原因之一是___。
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B. 燃油压力表显示压力不正常
C. 燃油预热不够
【单选题】
甩缸处理不当,使供油拉杆卡在供油位时,会造成柴油机___。
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【单选题】
柴油机主机油泵故障时,会导致柴油机___
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【单选题】
JZ-7空气制动机分配阀副阀模板右侧为___压力空气。
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B. 列车管
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【单选题】
抱轴瓦润滑间隙太小或两侧间隙太大产生偏斜时,会引起___。
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【单选题】
单纯的联合调节器故障,可使柴油机超过额定最高转速,达到极限转速时,由于___的作用,柴油机自动停车不会引起“飞车”。
A. 电磁联锁
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C. 调速器动力活塞
【单选题】
当柴油机某缸发出刺耳的敲缸声,排气支管及总管发红冒黑烟___故障。
A. 排气阀横臂导杆折断
B. 进气阀横臂导杆折断
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【判断题】
运用中,只要机油和冷却水温度超过正常范围,要及时调整温度控制阀,防止机车故障发生
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【判断题】
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B. 错
【判断题】
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A. 对
B. 错
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盘车机构主要用于盘车检查柴油机运动部件的运动状态
A. 对
B. 错
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四冲程柴油机转速为1000r/min时,凸轮轴转速为2000r/min
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【判断题】
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A. 对
B. 错
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柴油机冷却水温过低时,将导致混合气体形成的条件恶化,燃烧不完全,破坏了柴油机的热力状态
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虽然柴油机的紧急停车不会影响柴油机使用寿命,也不宜无故按动紧急停车按钮
A. 对
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【判断题】
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致使机油乳化的原因,主要是机油内含水量较高
A. 对
B. 错
【判断题】
由于喷油器雾化不良,燃油系统有空气,活塞刮油环反装或刮油性能差,均会导致柴油机冒黑烟
A. 对
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【判断题】
高温水系统水管上的温度控制阀漏油,会造成油水互窜,导致膨胀水箱有油
A. 对
B. 错
【判断题】
柴油机一发电机组的功率输出端通过传动轴与静液压变速箱连接
A. 对
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