首页/ 题库 / [单选题]Critical speed in di的答案

Critical speed in diesel engines occurs when engine torque pulsations become （）

单选题
2023-03-05 13:53
A、opposed to the crankshaft rocking couple
B、resonant with the crankshaft natural frequency
C、critical fore and aft crankshaft vibrations
D、horizontal whipping motions of the crankshaft
查看答案
正确答案
B
试题解析
标签： 船舶电气与船舶安全
感兴趣题目
An over-speed trip stops a diesel engine when the engine （）
Before shutting off the fuel supply to stop a medium or high–speed diesel engine, why is it necessary to allow the engine to idle for a few minutes?（）
Starting a large low-speed propulsion diesel engine on diesel fuel during cold weather conditions, will be made easier by （）
The main function of tie rods in the construction of large, low speed diesel engines is to（）.
In large, low-speed, main propulsion diesel engine, position ring groove wear usually occurs at the（）
保持安全值班的目的包括：（） Ⅰ、避免船舶发生碰撞事故Ⅱ、避免船舶发生火灾Ⅲ、避免船舶污染环境
A diesel engine experiences a sudden loss in speed, accompanied by black exhaust smoke, with the fuel rack at maximum, and speed remaining below normal the probable（）
船长应负责保管的船舶安全管理方面的证书有（）。 Ⅰ．符合证明； Ⅱ．符合证明的副本； Ⅲ．船舶安全管理证书； Ⅳ．船舶安全管理证书的副本。
Diesel engine mufflers or silencers reduce the engine exhaust noise by （）
The over-speed trip installed on most diesel engine will stop the engine by shutting off the （）
Critical speed in diesel engines occurs when engine torque pulsations become （）
相关题目

为了保证船舶航行安全，首先要确定船舶的航向与位置。船舶定位方法按照参照目标可分为（　）。
船舶防火控制图集中反映了船舶消防、救生设备的安全技术性能，是保障船舶营运安全的重要性图纸。
保持安全值班的目的包括：Ⅰ、避免船舶发生碰撞事故Ⅱ、避免船舶发生火灾Ⅲ、避免船舶污染环境（）
《中华人民共和国船舶安全检查规则》适用什么船舶？
为了保证船舶安全，船舶的适度稳性是（）。
根据我国现行船舶最低安全配员规则，下列叙述正确的是：（）I、船舶安全配员标准是船舶配备船员的最低要求；II、中外国籍船舶都应持有海事管理机构颁发的《船舶最低安全配员证书》；III、海事管理机构如认为配员减免后无法保证船舶安全时，可不予减免或者不予足额减免；IV、船舶在航行、停泊、作业时，必须将《船舶最低安全配员证书》妥善存放在船备查
下列哪些船舶应遵守我国现行船舶安全检查规则的要求？（）Ⅰ、任何海船；Ⅱ、任何内河船舶；Ⅲ、从事营业性运输的中国籍渔业船舶

下列关于船舶安全检查的说法中，正确的是（）。
Ⅰ、船舶接受安全检查时，陪同检查的船员引导检查人员即可
Ⅱ、船舶接受安全检查时，陪同检查的船员应按检查人员要求，调试、操纵有关设备
Ⅲ、中国籍船舶接受安全检查时出示船舶安全检查记录簿
Diesel engines obtain combustion air through turbo chargers，blowers，or（）.
On most diesel engines, the governor controls the output speed by （）.
The majority of medium speed and high speed marine diesel engines for main or auxiliary drive operate on the （） cycle.
One end of a cylinder for a medium or high-speed diesel engine is sealed by the piston and rings, the other end is sealed by the （）
An increase in the load on a turbocharged diesel engine operating at constant speed will result in an increase in （）
An increase in load on a diesel engine results in （） of speed of the crankshaft.
An increase in load on a diesel engine results in _____ of speed of the crankshaft.
Pistons of marine medium speed diesel engines may be made of （） in order to keep the weight down for balancing purpose at high speed.
The speed of the turbocharger for a four-stroke/cycle diesel engine driving a generator at constant speed depends on the （）
What is the best way of stopping an over-speeding diesel engine?（）
Worn main bearings in a diesel engine can result in （）
If a diesel engine starts firing, but is unable to come up normal speed, either without load or even under a small load, the cause may be （）
广告位招租WX:84302438
题库考试答案搜索网

免费的网站请分享给朋友吧

题库考试答案搜索网 2022 ©

关于我们网站声明合作共赢