(完整版)武汉理工大学能动学院复试题目
武汉理工大学能动学院《工程热力学和传热学》试卷
武汉理工大学教务处试题标准答案及评分标准用纸课程名称 :工程热力学和传热学 (A 卷)一、选择题、填空题(每题2分,共30分,)1C 2 A 3D 4C 5B 6A 7 29℃,16℃ 8升高压缩 9流量大,气体能无间歇地连续流进流出 10定压预热阶段 11C 12D 13C 14B 15惯性力与粘性力之比二、简答题(每题5分,共30分)1.答:可以是可逆的,也可以是不可逆的,取决于热源温度与空气温度是否随时相等或随时保持无限小的温差。
2.答:3.答:不能。
因为喷水冷却湿空气的过程近似一定焓过程,由焓湿图上可知,此时处理后湿空气的温度永远大于原先状态下的露点温度。
4.答:5.答:流体流经弯管时,由于离心力作用,在横截面上产生二次环流,增加了扰动,从而强化了换热。
6.答:由于地球表面有大气层(主要成分为co 2和水蒸气),白天大气层会吸收一部分来自太阳的辐射能量,而在夜间,因天空温度比太空温度(接近于绝对零度)高得多,由于大气层的辐射作用,故地球表面温度昼夜温差较小。
三、计算题(每题10分,共40分)1.解:①②③2.解:①②3.解:4.解:可见,逆流布置时△t m 比顺流时大44%,即在相同的条件下,只要将顺流改成逆流布置,就可以减少44%的换热面积。
()()()1213112131121T T T T k T T V C T T p C q q t---=---=-=η11/1//////,/=+===∆∆=q q Rd R R R q q ,t R t q d d d d d 代入计算得而故不变由于λδλδλδkgkJ u q ,/19614650-=--=∆-=ω由闭口系能量方程得系取气缸中的气体为热力()()kgkJ pu u q h q ,t /5.251845.0101.0175.0108.01465033-=⨯⨯-⨯⨯---=∆-∆-=∆-=ω由开口系能量方程得的气体为热力系取气缸进出口和气缸中()。
参考武汉理工自动化复试题
参考武汉理工自动化复试题1、半导体材料制作电子器件与传统的真空电子器件相比有什么特点?答:频率特性好、体积小、功耗小,便于电路的集成化产品的袖珍化,此外在牢固抗震可靠等方面也专门突出;然而在失真度和稳固性等方面不及真空器件。
2、什么是本征半导体和杂质半导体?答:纯洁的半导体确实是本征半导体,在元素周期表中它们一样差不多上中价元素。
在本征半导体中按极小的比例掺入高一价或低一价的杂质元素之后便获得杂质半导体。
3、空穴是一种载流子吗?空穴导电时电子运动吗?答:不是,然而在它的运动中能够将其等效为载流子。
空穴导电时等电量的电子会沿其反方向运动。
4、制备杂质半导体时一样按什么比例在本征半导体中掺杂?答:按百万分之一数量级的比例掺入。
5、什么是N型半导体?什么是P型半导体?当两种半导体制作在一起时会产生什么现象?答:多数载子为自由电子的半导体叫N型半导体。
反之,多数载子为空穴的半导体叫P型半导体。
P型半导体与N型半导体接合后便会形成P -N结。
6、PN结最要紧的物理特性是什么?答:单向导电能力和较为敏锐的温度特性。
7、PN结还有那些名称?答:空间电荷区、阻挡层、耗尽层等。
8、PN结上所加端电压与电流是线性的吗?它什么缘故具有单向导电性?答:不是线性的,加上正向电压时,P区的空穴与N区的电子在正向电压所建立的电场下相互吸引产生复合现象,导致阻挡层变薄,正向电流随电压的增长按指数规律增长,宏观上出现导通状态,而加上反向电压时,情形与前述正好相反,阻挡层变厚,电流几乎完全为零,宏观上出现截止状态。
这确实是PN结的单向导电特性。
9、在PN结加反向电压时果真没有电流吗?答:并不是完全没有电流,少数载流子在反向电压的作用下产生极小的反向漏电流。
10、二极管最差不多的技术参数是什么?答:最大整流电流11、二极管要紧用途有哪些?答:整流、检波、稳压等。
12、晶体管是通过什么方式来操纵集电极电流的?答:通过电流分配关系。
13、能否用两只二极管相互反接来组成三极管?什么缘故?答:否;两只二极管相互反接是通过金属电极相接,并没有形成三极管所需要的基区。
(完整版)武汉理工大学能动学院复试题目
2012年有幸参加了武汉理工大学能动学院研究生招生复试下面是一些能够回忆起的考题希望会对大家有所帮助:一、专业课考试部分: 总分100测试技术考题1、什么是压电效应?应用实例?2、什么是光电效应?应用实例?3、什么是霍尔效应?应用实例?4、测量误差按其影响程度可分为哪三类?分别作简单的介绍?5、系统误差按产生的原因可分为哪几类, 产生的原因是什么?如何利用扭矩法测涡轮等的转速?关于测转速的方法好好了解一下。
柴油机考题1、柴油机的固定件与活动件的名称?画出柴油机的简图并标出运动件与固定件。
2、柴油机燃料的燃烧分为哪几个阶段?分别有什么特点?高置水箱的作用?辅机考题1、泵的分类?并举例?2、什么是液压传动?应用实例?喷油泵与喷油嘴的区别与作用?智能交通运输系统1、如何解决打的难?2、对道路建设的一些建议?3、如何利用智能交通解决交通拥堵?你赞同单双号限行吗?这样做的利与弊?能回忆的就这么多了, 总共有26题测试技术10题, 柴油机5题, 辅机5题, 智能交通运输系统6题考试要求任选20题解答, 考试时间120分钟二、英语测试听力总共30题, 8个短对话4个长对话(每个长对话有4个小题)短文一篇总共6小题4题单词2题句子翻译部分一篇中译英是与专业相关的大概也就5—6句话不长的然后一篇英译中也是专业相关的长度差不多时间60分钟总分100分三、面试部分首先自我介绍中英文都可以没有要求, 但是最好样英文自我介绍, 然后就是文献翻译从打印好的一篇文献里随便挑一段让你读完后就翻译, 之后就是一些老师提问什么都会问的, 这个只要对自己所学过的所有专业科目有一个概括性的认识就行了, 当然有些老师也会细问的, 因人而异。
武汉理工大学考研复试内容复试参考书目复试准备复试资料全
武汉理工大学考研复试内容、参考书目、复试准备、复试资料经济学院一、复试内容1.专业素质与能力考核(笔试):占复试总成绩的30%。
(1)报考学术型研究生、金融和国际商务专业型研究生,主要考核基本概念、经济理论和经济政策分析能力等。
(2)报考公共管理硕士专业研究生:主要考核基本概念、时事政治知识和分析能力。
2.英语听说能力测试(面试):占复试总成绩的30%。
3.综合素质与能力考核(面试):占复试总成绩的40%。
4.同等学力(高职高专、本科结业、成人应届本科毕业)的考生需加试本科课程《货币银行学》、《国际贸易概论》(MPA专业除外)。
加试成绩不计入复试成绩。
加试成绩不合格(满分100分,低于60分为不合格)者不予录取。
【注:专业素质与能力考核、英语听说能力测试和综合素质与能力考核等三项复试内容中任何一项复试成绩不合格(满分100分,低于60分为不合格)者不予录取。
】二、录取规则1. 学术型研究生和金融、国际商务专业型研究生复试结果按照考生“总成绩”排序,在各专业招生计划指标范围内录取。
总成绩计算公式为:总成绩=【初试统考科目成绩之和/3.5】×40% + 【初试自命题科目成绩/1.5】×20% + 复试成绩×40%2. 公共管理硕士(MPA)研究生复试后总成绩计算公式为:总成绩=【全国联考成绩/3】×60%+笔试成绩×20%+面试成绩×20%3、免试推荐研究生按提前录取对待,不参加复试及复试总成绩排序。
4.未参加复试者按自动放弃录取资格处理。
文法学院一、复试内容1、复试内容包括:外语听力和口语测试、专业基础理论和专业综合能力笔试和面试。
专业笔试(8:30-10:30),笔试内容参考入学考试大纲;外语测试(包括口语、听力)二、考生录取总成绩计算方法、录取总成绩=[(初试统考科目成绩之和)/2]×35%+[(初试自命题科目成绩之和) /3] ×25%+复试成绩×40%复试成绩=外语成绩*20%+专业素质和能力考核(笔试)*40%+综合素质与能力(面试)*40%一、复试分数线:专业总分单科(满分=100分)单科(满分>100分)法学344 42 63新闻传播学359 54 81报考法律硕士(法学)315 42 63报考法律硕士(非法学)315 42 63理学院一、复试方式及复试内容1、所有参加复试的考生(一志愿考生以我校研招办网站公布的一志愿复试名单为准,调剂考生以中国研究生招生信息网发出的复试通知为准)均需进行资格审查,资审不合格考生不予复试;2、复试内容(1)思想政治素质和道德品质考核(在专业面试中进行考核)。
武汉理工大学研究生综合面试(专业面试题库答案1‘)
13、电力系统电磁干扰源产生的渠道1、谐波对二次设备干扰谐波对继电保护装置干扰分两种情况:故障情况下:引起保护误动、拒动。
谐波影响较大的是距离保护,距离保护按基波计算阻抗,谐波引起计算误差。
非故障情况下:比较严重的情况是变压器空载合闸时励磁涌流的影响,可以引起保护误动。
2、开关操作对二次设备的干扰一般来讲,断路器断口之间有灭弧介质(油、真空、SF6),开关触头运动快、时间短,所以操作时电弧重燃概率小,产生的干扰较隔离开关操作时低,当断口间有抑制操作过电压的并联电阻时,对二次回路干扰更小。
GIS隔离开关操作:GIS隔离开关操作将产生前沿很陡的暂态过电压。
3、不同耦合方式产生的干扰一次回路中的暂态高频振荡通过不同耦合方式进入二次回路:阻性耦合、感性耦合、容性耦合。
具体表现为:对二次回路感性和容性耦合,通过电磁式电压互感器耦合;通过电容式电压互感器耦合;通过耦合电容耦合;通过电流互感器耦合。
4、阻性耦合产生干扰主要由于雷击、短路电流等原因引起的地电位升高,是二次回路干扰的主要来源之一。
因为当雷电直击变电所或发生单相短路时,大电流经接地点泄入地网,使接地点乃至整个地网的电位升高(U g=I g R g),如果二次回路和接地网的连接点,如二次电缆的外皮,互感器二次绕组的中性点靠近大电流入地点,则这些接地点的电位也随之升高,在二次回路中造成共模干扰过电压,当过电压的数值过大,会引起二次设备绝缘击穿。
二次电缆外皮电缆两端与地网相连。
由于两端的接地电位不等,将有电流流过电缆外皮,通过电容耦合在二次芯线上产生纵向电势,叠加在信号上造成干扰。
当大量电流流过电缆外皮时,还会烧毁二次电缆。
5、直流回路操作产生暂态干扰直流操作回路中具有大电感线圈,如开关分合闸线圈、电磁式继电器工作线圈等。
当直流回路断开时,由于电感内储存的能量释放,线圈两端可能产生几千伏的过电压,这种过电压可以直接或间接的影响由直流电源供电的二次设备(如微机保护装置、保护装置出口继电器等),直流回路电感元件操作过电压通过线间耦合和传导将在其他二次回路中激发频率更高的干扰电压。
武汉理工大学能源与动力工程学院2020年硕士研究生招生复试
面试成绩其他考核成绩复试成绩1胡家豪104870000100051080703动力机械及工程全日制37091.20084.00090.48078.9442侯小康104970200332228080703动力机械及工程全日制34691.40083.33390.59375.6183胡飞104870000132087080703动力机械及工程全日制33691.00080.00089.90074.0104程奇志104970400344629080703动力机械及工程全日制34388.00074.33386.63374.0105余金阳104970400348193080703动力机械及工程全日制34186.20079.00085.48073.3846仇星文106980371614135080703动力机械及工程全日制33585.00072.00083.70072.0107陶文武104870000100127080703动力机械及工程全日制3660.0000.0000.0000.000放弃8高原106130080200205080703动力机械及工程全日制3480.0000.0000.0000.000放弃9李明106990420417081080703动力机械及工程全日制3420.0000.0000.0000.000放弃10黄伟森105610200004428080703动力机械及工程全日制3350.0000.0000.0000.000放弃11司冠琛106100080220105080703动力机械及工程全日制3360.0000.0000.0000.000放弃12段振岩104970400338868080703动力机械及工程全日制3350.0000.0000.0000.000放弃13张泉106980611104982085500机械全日制35594.00084.00093.00077.60014毕钰106100085520459085500机械全日制34794.00082.33392.83376.43015吴萌萌104970400344860085500机械全日制34792.40086.66791.82776.12816刘冬106100085520110085500机械全日制35885.20083.00084.98075.61417刘渊之105330431515703085500机械全日制35984.80078.66784.18775.51618刘学良102130040001474085500机械全日制34092.80078.33391.35375.00619郑联爽104870000130360085500机械全日制35085.40081.00084.96074.48820王宇威104870000103623085500机械全日制3580.0000.0000.0000.000放弃备注武汉理工大学能源与动力工程学院2020年硕士研究生招生复试成绩公示复试成绩序号姓名考生编号专业代码专业名称学习形式(全日制/非全日制)初试总分总成绩21董浩102800210017106085500机械全日制3490.0000.0000.0000.000放弃22刘钦宇104870000104143085500机械全日制3440.0000.0000.0000.000放弃23蒲伟106100085520267085500机械全日制3530.0000.0000.0000.000放弃24张文轩102870210505707085500机械全日制3490.0000.0000.0000.000放弃25曾思博105320613300573085500机械全日制3480.0000.0000.0000.000放弃26钟日钊105610200000949085500机械全日制3420.0000.0000.0000.000放弃27乔润璞104870000104123086100交通运输全日制36592.00085.00091.30078.49028金洋106980411314801086100交通运输全日制3870.0000.0000.0000.000放弃29王向光106110532080140086100交通运输全日制3690.0000.0000.0000.000放弃30郑华康104870000103494086100交通运输非全日制32291.80077.66790.38772.19631杨沛艺104970400339343086100交通运输非全日制32686.40082.00085.96071.42832张耕104970400339043086100交通运输非全日制3260.0000.0000.0000.000放弃33相里海鹏107100613302508086100交通运输非全日制3100.0000.0000.0000.000放弃34朱显丰104970400347284086100交通运输非全日制3060.0000.0000.0000.000放弃35孟睿阳104970200332868086100交通运输非全日制3010.0000.0000.0000.000放弃36王嘉璇104970200334651086100交通运输非全日制2990.0000.0000.0000.000放弃37龚菁圆107100412109457086100交通运输非全日制2920.0000.0000.0000.000放弃38谢文104870000104185085800能源动力非全日制35585.60072.00084.24074.97239付旋坤104970200334391085800能源动力非全日制34287.00078.00086.10073.71040王显飞104970200332311085800能源动力非全日制32388.20084.66787.84771.57441刘喆104870000100494085800能源动力非全日制3180.0000.0000.0000.000放弃42李帅104970200334434085800能源动力非全日制3320.0000.0000.0000.000放弃43曾鑫104870000141761085800能源动力非全日制3280.0000.0000.0000.000放弃。
(完整word版)年武汉理工大学能动学院复试专业综合笔试大纲
附件各专业或领域专业素质考试大纲(请考生按初试报考专业或领域复习备考)测试技术复试(笔试)内容大纲一、基本要求要求学生掌握测试技术的基础理论和主要参数的测试方法,掌握测试技术在热能与动力机械中的具体运用,并能对各种参数进行测试。
二、考试内容1.掌握测量的基本知识,了解测试技术在科学研究和热能与动力机械制造、使用中的作用和意义。
2.熟悉测试信号处理的基础理论,掌握测试信号分析的一般方法。
3.熟悉测量误差的基础理论,掌握数据处理的一般方法。
4.掌握测试系统的数学描述,熟悉掌握测试系统的动、静态特性5.掌握传感器的基本概念,常用传感器的工作原理、特性及适用范围。
6. 掌握热能与动力机械温度、压力、流速、流量、液位、转速和功率,振动、噪声等常用参数的测试方法及仪器仪表的工作原理与特性,并能正确选用。
三、推荐参考书:1. 《工程测试技术(第2版)》,王伯雄主编,北京:机械工业出版社,2012.2. 《热能与动力工程测试技术(第2版)》,严兆大主编,北京:机械工业出版社,2006.3. 《热能与动力工程测试技术》,郑正泉主编,武汉:华中科技大学出版社,2001.船舶柴油机复试(笔试)内容大纲一、考试内容1.船舶柴油机概述柴油机的基本工作原理,柴油机的类型及其本特点。
2.燃烧室部件活塞、活塞环、活塞销等的功用、工作条件和结构型式。
活塞的冷却和冷却机构。
活塞的应力和可靠性。
气缸体和气缸套的功用、工作条件和结构型式。
气缸套的穴蚀和对策。
气缸盖的功用、工作条件和结构型式。
气缸盖的安装应力、热应力和热疲劳及其可靠性。
3.主要运动机件连杆、十字头等结构形式和功用,曲轴的功用、工作条件、曲轴各部分的构造,多缸机曲柄排列原则。
主轴承的型式、特点。
4.换气和增压换气机构的组成、功用和构造型式。
废气涡轮增压系统的各种形式及特点。
5.燃油喷射与燃烧燃油的喷射过程、喷射质量,异常喷射及消除。
喷油设备的组成、对喷油设备的要求,喷油泵和喷油器的动作原理、喷油定时和喷油量的检查和调整。
(NEW)武汉理工大学能源与动力工程学院《876工程热力学及传热学》(一)历年考研真题汇编
目 录
第1部分 武汉理工大学工程热力学与传热学考研真题2010年武汉理工大学876工程热力学与传热学考研真题2009年武汉理工大学876工程热力学与传热学考研真题2008年武汉理工大学876工程热力学与传热学考研真题2007年武汉理工大学853工程热力学及传热学考研真题2006年武汉理工大学853工程热力学与传热学考研真题第2部分 武汉理工大学工程热力学考研真题
2008年武汉理工大学862工程热力学考研真题
2007年武汉理工大学459工程热力学考研真题
2006年武汉理工大学459工程热力学考研真题
2005年武汉理工大学459工程热力学考研真题
2004年武汉理工大学459工程热力学考研真题
2003年武汉理工大学工程热力学考研真题
2002年武汉理工大学工程热力学考研真题
第3部分 武汉理工大学传热学考研真题
2007年武汉理工大学464传热学考研真题2006年武汉理工大学464传热学考研真题2005年武汉理工大学464传热学考研真题2004年武汉理工大学464传热学考研真题2003年武汉理工大学传热学考研真题
第1部分 武汉理工大学工程热力学与传热
学考研真题
2010年武汉理工大学876工程热力学与传热学考研真题。
武汉理工机电工程学院复试试题、注意事项及技巧(内部资料)
机电学院复试内部资料◆机械原理[1]三心定理[2]斜齿轮比直齿轮的优越性(直齿轮、斜齿轮各有何特点)[3]高副、低副、约束问题[4]压力角对凸轮的影响[5]如何减小凸轮的基圆半径[6]棘轮的特性[7]连杆的急回特性,什么是急回特性?有什么意义?[8]虚约束的作用[9]连杆机构的连接方式[10]连杆问题中回程速度不同问题,回程系数,死点[11]机械原理中K代表什么?有什么意义?如何计算?[12]机械原理简单自由度的判断[13]变位齿轮问题[14]飞轮的作用是什么?(机械原理问题)[15]怎样减小转动的不平衡性[16]为什么说三种回旋机构[17]齿顶圆、分度圆之间的关系(齿顶圆半径、齿根圆半径、分度圆半径之间的关系,齿顶高、齿根高、及其各自的系数值)(本人所抽题目,括号内为老师追加提问)◆机械设计[1]机械零件的主要失效形式[2]机械零件的设计准则[3]摩擦的有哪几种分类[4]螺纹连接的基本类型及其应用场合[5]键的分类,如何选择键的直径(注意键是标准件)[6]平带、V带传动能力比较,带传动的主要失效形式,其设计准则是什么?[7]为什么V带传动速度一般为5—25m/s?带传动的带速选择问题[8]带传动选择时的主要参数有哪些[9]链传动过程中的多边形效应,为何链节数一般为偶数?[10]链传动与带传动的区别[11]链传动布置时所注意的问题[12]螺栓连接的几种主要形式[13]涡轮蜗杆的热平衡问题[14]流体动压油膜的形成条件是什么?[15]滚动轴承寿命、轴承寿命的概念问题[16]轴有哪几种分类?各受何种力?(机械设计本人所抽题目)[17]根切的成因、如何避免根切?[18]轴瓦的失效形式,齿轮的失效形式[19]蜗杆传动正常运转的条件[20]小齿轮和大齿轮啮合时,对大小齿轮的设计上要注意什么?[21]常用螺纹是右旋还是左旋?为什么?[22]细牙螺纹的特点及作用,当量系数◆控制工程[1]二阶性能指标[2]线性系统稳定的主要条件[3]PI的定义,用于何种控制(何种场合)[4]控制系统的校正方法[5]PID校正有哪几种方式(此处与校正有关的东西很容易被考到,但是不会太难,要认真准备)[6]乃奎斯特曲线上关键点在图上是如何标注的[7]传递函数的概念[8]开环和闭环传递函数的问题[9]给出几幅图,判断其稳定性[10]积分微分控制的超前滞后问题[11]给出几幅图,判断其正负反馈(本人复试时所抽题目)◆液压[1]相同孔径、容积、液面高度情况下,油和水哪个流得更快?为什么?[2]排量的概念[3]给定某个系统介绍其原理◆其他科目[1]在搬运过程中应该怎样运用IE的思想[2]设施布置概念[3]节点概念[4]企业长中短期计划的区别[5]物流方程式的含义[6]专用机床与通用机床的区别[7]焊接后需要注意什么问题[8]随即信号特征描述数电基础计算题[9]SLP的输入条件有哪些[10]IO接口的作用[11]与电容公式相关的选择题[12]自动控制原理的关于系统稳定求K值的问题[13]PID中P/I/D各代表什么?各用于何种场合?[14]汽车离合器有什么作用[15]切削热的来源复试安排及注意事项◆复试安排:[1]复试前一天领取复试相关资料,熟悉流程,进行体检。
武汉理工大学自动化学院研究生复试面试150题答案doc资料
武汉理工大学自动化学院研究生复试面试150题答案微机原理1、串行通信有几种方式?它们的特点分别是什么?6、什么叫同步通信方式?异步通信方式?它们各有什么优缺点?答:串行通信有两种工作方式:异步通信和同步通信。
异步通信的数据格式:1个起始位,7~8位数据位,1个奇偶校验位,1、1.5或2个停止位。
不需要同步信号,硬件连接简单,被广泛采用。
同步通信在发送端和接收端之间要用时钟来实现同步,在相同波特率的前提下,同步通信所传输的数据量要大于异步通信所传输的数据量。
同步通信方式和异步通信方式。
同步通信方式要求通信双方以相同的时钟频率进行,而且准确协调,通过共享一个单个时钟或定时脉冲源保证发送方和接收方的准确同步,效率较高;异步通信方式不要求双方同步,收发方可采用各自的时钟源,双方遵循异步的通信协议,以字符为数据传输单位,发送方传送字符的时间间隔不确定,发送效率比同步传送效率低。
3、若某个微处理器有20条地址总线和16条数据总线,问存储器空间有多大?经由数据总线可传送的带符号数的范围是多少?答:总存储空间为2的20次方,即1M。
范围为 -32767~+32768。
4、简述8086CPU的最小方式和最大方式,并说明它们之间有什么不同?答:最小模式中,系统所需要的控制信号全部由8086CPU本身提供最大模式中,系统所需要的控制信号由总线控制器8288提供。
CPU的管脚MN/MX管脚接高电平时,构成最小模式;接低电平时,构成最大模式。
5、 CPU和接口之间有哪几种传送信息的方式?在CPU与外设交换信息的过程中,这些方式各自的适用范围是什么?答:有两种通信方式:程序控制方式和直接存储器存取,即DMA方式。
程序控制方式又分为三种:同步传输方式,异步传输方式和中断方式。
同步传输方式特点是外设可以处于CPU的控制之下。
异步传输方式应用于慢速的外设与CPU传输数据,但是CPU的利用率不高。
中断方式提高CPU的利用率。
DMA方式应用于高速的外设或成块交换数据的情况。
武汉理工大学研究生综合面试(专业面试题库答案2‘)
184、191、传统的功率方向元件存在死区。
传统的功率方向元件,或称为功率方向继电器,利用线电压和相电流之间的相位关系来判断故障方向,而在保护出口发生三相金属性短路时,输入保护的线电压为0,无法进行相位比较,所以存在死区。
目前保护中的方向元件大多数为故障分量方向元件,不存在死区问题。
3、动作特性:当线路发生三相短路所以4、死区:当正方向出口短路时,,GJ不动——电压死区。
消除办法:采用90度接线方式,加记忆回路。
181、188、保证供电的安全可靠保证供电的安全可靠————减少事故率减少事故率保证电能质量保证电能质量————波形、频率、电压波形、频率、电压\随时调频、调压我国规定的电力系统的额定频率为50HZ,大容量系统允许频率偏差±0.2 HZ,中小容量系统允许频率偏差±0.5 HZ。
电压的允许变化范围。
线路额定电压正常运行电压允许变化范围35kv及以上± 5%Ue10kv及以下± 7%Ue低压照明及农业用电(+5%~ --10%)Ue电力系统的频率主要取决于有功功率的平衡,电压主要取决于无功功率的平衡,可通过调频、调压和无功补偿等措施来保证频率和电压的稳定。
电力系统的供电电压(或电流)的波形为严格的正弦形。
电压的允许变化范围线路额定电压正常运行电压允许变化范围35kv及以上±5%Ue 10kv及以下±7%Ue低压照明及农业用电、(+5%~ --10%)Ue完成足够的发生功率和发电量保证电力系统运行的经济性184、6.2 电力系统各元件的序电抗在三相短路分析和计算中,所涉及的都是正序参数。
6.2.1 各元件序电抗的关系*发电机(旋转元件)有相对运动的磁偶合现象,正序电流产生与转子旋转方向相同的旋转磁场,负序电流产生与转子旋转方向相反的旋转磁场,零序电流产生的磁场与转子位置无关,因此, X1=X2≠X*线路、变压器(静止磁偶合元件):—自电抗;Xs—互电抗。
最新武汉理工大学自动化学院研究生复试面试150题答案
微机原理1、串行通信有几种方式?它们的特点分别是什么?6、什么叫同步通信方式?异步通信方式?它们各有什么优缺点?答:串行通信有两种工作方式:异步通信和同步通信。
异步通信的数据格式:1个起始位,7~8位数据位,1个奇偶校验位,1、1.5或2个停止位。
不需要同步信号,硬件连接简单,被广泛采用。
同步通信在发送端和接收端之间要用时钟来实现同步,在相同波特率的前提下,同步通信所传输的数据量要大于异步通信所传输的数据量。
同步通信方式和异步通信方式。
同步通信方式要求通信双方以相同的时钟频率进行,而且准确协调,通过共享一个单个时钟或定时脉冲源保证发送方和接收方的准确同步,效率较高;异步通信方式不要求双方同步,收发方可采用各自的时钟源,双方遵循异步的通信协议,以字符为数据传输单位,发送方传送字符的时间间隔不确定,发送效率比同步传送效率低。
3、若某个微处理器有20条地址总线和16条数据总线,问存储器空间有多大?经由数据总线可传送的带符号数的范围是多少?答:总存储空间为2的20次方,即1M。
范围为-32767~+32768。
4、简述8086CPU的最小方式和最大方式,并说明它们之间有什么不同?答:最小模式中,系统所需要的控制信号全部由8086CPU本身提供最大模式中,系统所需要的控制信号由总线控制器8288提供。
CPU的管脚MN/MX管脚接高电平时,构成最小模式;接低电平时,构成最大模式。
5、CPU和接口之间有哪几种传送信息的方式?在CPU与外设交换信息的过程中,这些方式各自的适用范围是什么?答:有两种通信方式:程序控制方式和直接存储器存取,即DMA方式。
程序控制方式又分为三种:同步传输方式,异步传输方式和中断方式。
同步传输方式特点是外设可以处于CPU的控制之下。
异步传输方式应用于慢速的外设与CPU传输数据,但是CPU的利用率不高。
中断方式提高CPU的利用率。
DMA方式应用于高速的外设或成块交换数据的情况。
7、全双工和半双工通信的区别何在?在二线制电路上能否进行全双工通信?为什么?答:单工数据传输只支持数据在一个方向上传输;半双工数据传输允许数据在两个方向上传输,但是,在某一时刻,只允许数据在一个方向上传输,它实际上是一种切换方向的单工通信;全双工数据通信允许数据同时在两个方向上传输,因此,全双工通信是两个单工通信方式的结合,它要求发送设备和接收设备都有独立的接收和发送能力。
武汉理工大学研究生英语口语复试questions题库
研究生英语口语复式1、What can you tell me about yourself?(关于你自己,你能告诉我些什么?)2、What would you like to be doing five years after graduation?(在毕业以后5年内你想做些什么?)3. What is your greatest strength?(你最突出的优点是什么?)4. What is your greatest weakness?(你最大的弱点是什么?)I‘m such a perfectionist that I will not stop until a job is well done.5. How do you feel about your progress to date?“(对于你至今所取得的进步你是怎样看的?)二、其他常见问题6.Why did you choose Wuhan university of Technology?7.Why did you choose School of Automation?8.What would you like to be doing five years after graduation?9.What has been your greatest accomplishment?10.Describe your greatest strengths and weaknesses.11.What have you learned from the jobs you have held?三、行为面试问题(Sample Behavioral Interview Questions):12.Describe the best/worst team of which you have been a member.13Tell me about a time when your course load was heaviest. How did you get all of your work done?14.Give me a specific example of a time when you sold someone on an idea or concept.15.Tell me about a time when you were creative in solving a problem.16.Describe a time when you got co-workers or classmates who dislike each other to work together.17.Tell me about a time when you made a bad decision.四、压力面试问题(Sample Stress Interview Questions):18.What kinds of people do you find it difficult to work with?19.What are some of the things you find difficult to do?20.How would you evaluate me as an interviewer?21.What interests you least about MBA?22.How do you handle rejection?23.What is the worst thing you have heard about our school?24.See this pen I‘m holding. Sell it to me.五、案例面试问题(Sample Case Interview Questions):25.A chain of grocery stores currently receives its stock on a decentralized basis. Each store deals independently with its suppliers. The president of the chain is wondering whether the firm can benefit from a centralized warehouse. What are the key considerations in making this decision?六、非常规问题:26.It is the 15th Century. How do convince the Pope that the Earth is round?27. If I gave you an elephant,where would you hide it?28. Why are soda cans tapered on the top and bottom?29. How much RAM does a PC need to run Windows95?30. You are in a boat on a fresh water lake. In your hand is a rock. You throw the rock into the lake. How is the lake‘s water level affected?31. If it rained music,what would grow?32. Describe your best friend and what he or she does for a living.33. In what ways are you similar or different from your best friend?34.What are your career‘s strengths and how do you capitalize on them?35. Are you a happy person?36. According to JRM,Jr.,a fast growing software company asked this question……You have a wealthy aunt who weighs 300 pounds. Tell me how you would redesign her toilet.七、其他常见的英语面试问题:37.Would you please make a brief introduction about yourself?38.Why did you take the MBA examination?Would you please say something about the currently MBA program in China?39.Why do you choose RENMIN University to study MBA?Tell me a little about RENMIN University form your understanding.40.How do the people around you review MBA?41.What‘s the difference between MBA program at home and abroad?42.If you failed this time what will you do in the near future?43.Why do you want to be a part of MBA students?44.Why do you think you are qualified for MBA program?45.Do you have a career plan in 5 years?46.Do you have a study plan if you were accepted as a MBA student?47.What‘s your opinion about the requirement that a MBA student must have working experience?48.How do you define marketing or management?49.Do you think English is quite important in MBA study?Why?50.Do you think MBA training courses will help you a lot in your future life?Why?51.What do you want to do after your MBA study?52.What is the most important qualification that a MBA student should have?53.Say a little about teamwork.54.Say a little about management.55.How communication works in organizations?56.Tell me the relationship between the management and management theory.57.What will you do if you can‘t find a job?58.Do you think that the economy will get better?59.Who are you currently employed with?60.What kinds of opportunities are you looking for?61.What is your biggest accomplishment on the job?62.What joy did you enjoy the most and why?63.What would your former boss say about you?64.Why did you leave your last job?65.Please tell me a little about your working history?What kind of fields?66.Say a little about your educational background.67.What are your strengths and weakness?68.What do you do in your spare time?69.What is your impression of Beijing?70.What is CFO?If you were a CFO,what would you do?71.What is the difference between sales and marketing?72.What do you think is the most important as a manager?73.What changes do you anticipate in our school?(你希望我们学校会有些什么样的变化)74.Which is the best course in our school?(什么课程是我们院最好的课程)75.does our school provide some guidance of job to MBA?1.What’s your name?2.Does your name have any special meaning?3.Where were you come from?4.What kind of landscape surrounds your hometown?5.What is the climate like in your hometown?6.What is people’s favorite food in your region?7.What do you do during the Spring Festival?8.Can you describe one of the main festivals celebrated ?9.Tell me something about the customs of your hometown.10.How long have you lived in XXX?11.What place in XXX do you like best?Why?12.Which is the best place you’ve been to China?13.What is the biggest problem you will face?14.Could you tell me something about your family?15.When will you get married?16.What social responsibilities should a post-graduate take?17.What difficulties do your parents have concerning their old age?18.Which kind of professor do you like best?19.What does friendship mean to you?What kind of people do you make friend with?20.What is your major?21.How do you like your major?22. When and where did you graduate?What qualifications have you obtained?23.What impressed you most when you were at university?24.What is the best university in your opinion?25.Could you sum up your own study habits in a few points?26.Do you think the subjects you are studying today are relevant to present-day society?Why?27.What do you do for a living?28.What are your job prospects?29.If you had the opportunity to change your subject,what would you do with it?30.What are your spare time interests?31.How do you spend your weekends?32.What is your favorite sport?What are the rules?33.What kind of films do you like best?34.What kind of music do you enjoy?35.Where have you been traveling to?Which place interested you most?36.Do you enjoy traveling?If yes. Where and why?37.What kind of differences in the system of higher education between China and other countries?38.What problem do you think you will have in XXX?39.How will you overcome the difficulties?40.Do you think you will be able to cope with English-demands of your intended study program?41.What difficulties do you think you’ll encounter in your studies?42.What do you intend to study?43.Why did you choose our university?44.Would you want to be a volunteer during Olympic Games?45.If there were an opportunity of studying abroad, what would you do?46.Should you study more theory or do more practice?Give your reasons,please.47.What do you intend to do after you finish studying?48.What do you think of the future of China keeps an open policy?49.What do you regard as the most significant events in recent history?50.What aspect of English do you find the most difficult?51.How aware do you think people are nowadays about environmental issues?52.How serious is unemployment among young people?53.In your opinion,what are the most serious problems associated with modern life?54.What do you think have been the most important changes in your study field over the past5years?55.As there are more and more private cars,what do you think the government should do in order to encourage citizens to use public transport?56.How do you see yourself in ten years’time?57.What business do you hope to have?58.What will do if you cannot find a job after graduation?59.How do you afford your tuition?60.Does your family support your decision on studying?What help do they offer?1. What made you decide to change your job?A: May I ask you why you left the former company ?Can you sell yourself in two minutes ?Go for it.Give me a summary of your current job descript_ion.Why did you leave your last job ?How do you rate yourself as a professional ?What contribution did you make to your current (previous) organization ?What do you think you are worth to us ?What make you think you would be a success in this position ?Are you a multi-tasked individual ?What is your strongest trait(s) ?How would your friends or colleagues describe you ?What personality traits do you admire ?What leadership qualities did you develop as an administrative personnel ?How do you normally handle criticism ?What do you find frustrating in a work situation ?How do you handle your conflict with your colleagues in your work?How do you handle your failure ?What provide you with a sense of accomplishment.If you had a lot of money to donate, where would you donate it to ?Why ?What is most important in your life right now ?What current issues concern you the most ?How long would you like to stay with this company ?Could you project what you would like to be doing five years from now ?1. What is important to you in a job?2. Why do you want to work for this organization?3. Why should we employ you?4. If we hire you, how long will you stay with us?5. Can we offer you a career path?6. What are your greatest strengths?7. What are you greatest weakness?8. What didn\'\'t you like of previous jobs you\'\'ve held?9. How do you spend your leisure time?10. Are there any weaknesses in your education or experience?11. Where do you want to be five years from now?12. What are your salary expectations?13. What would you do if……?14. What type of position are you interested in?15. Tell me something of yourself.16. Do you have any questions of the organization or the job?Third One: Why do you feel you are qualified for this job?Think back to your last review. What suggestions did your supervisor have for improvement?Describe a project you worked on that didn’t turn out as well as you expected.4. In what area of your work do you think you can be more effective?1. Would you please make a brief introduction about yourself?2. Why did you take the MBA examination?Would you please say something about the currently MBA program in China?3. Why do you choose RENMIN University to study MBA?Tell me a little about RENMIN University form your understanding.4. How do the people around you review MBA?5. What’s the difference between MBA program at home and abroad?6. If you failed this time what will you do in the near future?7. Why do you want to be a part of MBA students?8. Why do you think you are qualified for MBA program?9. Do you have a career plan in5years?10. Do you have a study plan if you were accepted as a MBA student?11. What’s your opinion about the requirement that a MBA student must have working experience?12. How do you define marketing or management?13. Do you think English is quite important in MBA study?Why?14. Do you think MBA training courses will help you a lot in your future life?Why?15. What do you want to do after your MBA study?16. What is the most important qualification that a MBA student should have?17. Say a little about teamwork.18. Say a little about management.19. How communication works in organizations?20. Tell me the relationship between the management and management theory.21. What will you do if you can’t find a job?22. Do you think that the economy will get better?23. Who are you currently employed with?24. What kinds of opportunities are you looking for?25. What is your biggest accomplishment on the job?26. What joy did you enjoy the most and why?27. What would your former boss say about you?28. Why did you leave your last job?29. Please tell me a little about your working history?What kind of fields?30. Say a little about your educational background.31. What are your strengths and weakness?32. What do you do in your spare time?33. What is your impression of Beijing?34. What is CFO?If you were a CFO,what would you do?35. What is the difference between sales and marketing?1.Where do you come from?2.What kind of landscape surrounds your hometown?3.What do you do during the Spring Festival?4.Tell me something about the customs of your hometown.5.Could you tell me something about your family?6.What social responsibilities should a post-graduate take?7.Which kind of professor do you like best?8.What does friendship mean to you and what kind of people do you make friend with?9.What is your major? How do you like your major?10. When and where did you graduate?What qualifications have you obtained?11.What impressed you most when you were at university?12.What is the best university in your opinion?13.Do you think the subjects you are studying today are relevant to present-day society?Why?14.What do you do for a living?15.What are your job prospects?16.If you had the opportunity to change your subject,what would you do with it?17.What are your spare time interests?18.Where have you been traveling to?Which place interested you most?19.What kind of differences in the system of higher education between China and other countries?20.Do you think you will be able to cope with English-demands of your intended study program?21.What difficulties do you think you'll encounter in your studies?22.Why did you choose our university?23.If there were an opportunity of studying abroad, what would you do?24.Should you study more theory or do more practice?Give your reasons,please.25.What do you intend to do after you finish studying?26.How serious is unemployment among young people and what will you do if you cannot find a job after graduation?27.In your opinion,what are the most serious problems associated with modern life?28.What do you think have been the most important changes in your study field over the past5years?29.How do you afford your tuition?30.Does your family support your decision on studying?What help do they offer?Q:What do you find frustrating in a work situation?(在工作中,什么事令你不高兴?) Q:How do you handle your conflict with your colleagues in your work?(你如何处理与同事在工作中的意见不和?)Q:How do you handle your failure?(你怎样对待自己的失敗?)Q:What provide you with a sense of accomplishment.(什么会让你有成就感?)Q:If you had a lot of money to donate, wh re would you donate it to?Why?(假如你有很多钱可以捐赠,你会捐给什么单位?为什么?)Q:What is most important in your life right now?(眼下你生活中最重要的是什么?) Q:What current issues concern you the most?(目前什么事是你最关心的?)Q:How long would you lik to stay with this company?(你会在本公司服务多久呢?) Q:Could you project what you would lik to be doing five years from now?(你能预料五年后你会做什么吗?)Q:What range of pay-scale are you interested in?(你喜欢那一种薪水层次标准?)(Ⅰ). Q:Can you sell yourself in two minutes?Go for it.Q:Why did you leave your last job?(你为什么离职呢?)Q:How do you rate yourself as a professional?(你如何评估自己是位专业人员呢?)Q:What contribution did you make to your current (previous) organization?(你对目前/从前的工作单位有何贡献?)Q:What do you think you are worth to us?(你怎么认为你对我们有价值呢?)Q:What make you think you would be a success in this position?(你如何知道你能胜任这份工作?)Q:Are you a multi-tasked individual?(你是一位可以同时承担数项工作的人吗?) orDo you work well under stress or pressure?(你能承受工作上的压力吗?)Q:What is your strongest trait(s)?(你个性上最大的特点是什么?)Q:How would your friends or colleagues describe you?(你的朋友或同事怎样形容你?)Q:What personality traits do you admire?(你欣赏哪种性格的人?)Q:What leadership qualities did you develop as an administrative personnel?(作为行政人员,你有什么样的领导才能?)Q:How do you normally handle criticism?(你通常如何处理別人的批评?)Q:What do you find frustrating in a work situation?(在工作中,什么事令你不高兴?)Q:How do you handle your conflict with your colleagues in your work? (你如何处理与同事在工作中的意见不和?)Q:How do you handle your failure?(你怎样对待自己的失敗?)Q:What provide you with a sense of accomplishment. (什么会让你有成就感?)Q:If you had a lot of money to donate, where would you donate it to?Why?(假如你有很多钱可以捐赠,你会捐给什么单位?为什么?)Q:What is most important in your life right now?(眼下你生活中最重要的是什么?)Q:What current issues concern you the most?(目前什么事是你最关心的?)Q:How long would you like to stay with this company?(你会在本公司服务多久呢?)Q:Could you project what you would like to be doing five years from now?(你能预料五年后你会做什么吗?)Q:What range of pay-scale are you interested in?(你喜欢那一种薪水层次标准?What's your greatest weakness?Why do you feel you are qualified for this job?What kind of salary did you have in mind?If hired, when could you start work?What kind of work does the posi-tion involve?1.Tell me about you!2. What do you know about our company?3. Why do you want to work for us?4. What would you do for us? What can you do for us that someone elsecan't?5. What about the job offered do you find the most attractive? Leastattractive?6. Why should we hire you?7. What do you look for in a job?8. Please give me your definition of a .... (the position for which youare being interviewed).Keep it brief -- give an action- and results-oriented definition.9. How long would it take you to make a meaningful contribution to ourfirm?10. How long would you stay with us?1.Y ou may be overqualified for the position we have to offer.2. What is yourmanagement style?3. Are you a goodmanager? Give an example. Why do you feel you have top managerial potential?4. What do youlook for when you hire people?5. Did you everfire anyone? If so, what were the reasons and how did you handle it?6. What do you seeas the most difficult task in being a manager?7. What do yoursubordinates think of you?8. What is yourbiggest weakness as a manager?1.Why are you leavingyour present job?2. How do you feel about leaving all of your benefits?3. Describe what you feel to be an ideal working environment.4. How would you evaluate your present firm?1.How have you helped increase sales? Profits?2. Have you helpedreduce costs? How?3. How much moneydid you account for?4. How many peopledid you supervise on your last job?5. Do you likeworking with figures more than words?6. In your currentor last position, what features did you like the most? Least?7. In your currentor last position, what are or were your five most significant accomplishments?1. Why haven't you found a newposition before now?2. Had you thought of leaving your present position before? If so, whatdo you think held you there?3. What do you think of your boss?4. Would you describe a situation in which your work was criticized?5. What other types of jobs or companies are you considering?1.If I spoke withyour previous boss, what would he say are your greatest strengths andweaknesses?2. Can you work under pressures, deadlines, etc.?3. How have you changed the nature of your job?4. Do you prefer staff or line work? Why?5. In your present position, what problems have you identified that hadpreviously been overlooked?6. Do you feel you might be better off in a different size company?Different type company?7. How do you resolve conflict on a project team?8. What was the most difficult decision you ever had to make?1.How much are youlooking for?2. How much do you expect if we offer this position to you?3. What kind of salary are you worth?1.Do you generallyspeak to people before they speak to you?2. What was the last book you read? Movie you saw? Sporting event youattended?3. What is the toughest part of a job for you?4. Are you creative?5. How would you describe your own personality?6. Are you a leader?7. What are your future goals?8. What are your strengths?9. What are your weaknesses?1.If you could startyour career again, what would you do differently?2. What career options do you have at the moment?3. How would you describe the essence of success? According to yourdefinition of success, how successful have you been so far?What are your weaknesses?Why did you leave your last job?How do you deal with criticism?Where do you see yourself in ten years?How do you deal with authority?What do you think of your previous manager?What is the riskiest thing you have ever done?What was the biggest setback in your college life ? How did it impact you ?How did you face this setback ?。
武汉理工大学硕士研究生复试题 武汉理工大学 车辆工程考研
武汉理工大学硕士研究生复试综合试题专业车辆工程一. 在装配载货汽车的三万向节传动轴时, 应如何装配才能满足使用要求?并说明为什么要这样装配? ( 10分)二. 请说明汽车用汽油发动机和柴油发动机在工作循环过程和结构组成方面有何异同?( 10分)三. 在汽车的前轮定位参数中,与主销有关的前轮定位参数有那些?各有什么作用? 并说明其道理?( 10分)四. 某汽车在泥泞道路上行驶时,只见左后轮快速转动,右后轮慢速转动,而汽车没有前进。
请分析说明发生该现象的原因?( 10分)五. 请用汽车功率平衡图来分析说明汽车变速器档位的多少. 档位的高低. 对汽车汽车动力性和燃油经济性的影响?( 10分)六. 为什么不少轻型汽车的制动系统设置有比例阀?如果将某轻型汽车制动系统的比例阀去掉,其它参数条件均不变,那么汽车的制动性能会发生怎样的变化?并请分析说明其道理?( 10分)七、汽车稳态转向特性的响应有哪三种类型? 汽车操纵稳定性对稳态转向特性的要求如何? 并请说明其道理? ( 10分 )八. 请说明用道路试验方法测定某汽车加速能力的方法(应说明测试的条件、测试的仪器、试验的步骤、测试结果的处理)? ( 10分 )九. 在评价一辆汽车的质量时,应该从那些方面去进行全面评价?( 10分 )十. 你在攻读学士学位期间学习了哪些技术基础课和专业课(含必修课和选修课)?谈谈你应用计算机的情况?你在攻读车辆工程专业硕士学位期间打算从事的研究方向是什么(1个或几个)?( 10 分)武汉理工大学硕士研究生复试同等学历考生加试试题专业车辆工程课程汽车构造一. 选择题(请将正确答案的序号写到题前括号内。
每小题2分,共20分)1.( )普通级轿车发动机的排量为A. 0.5—1.0升B. 1.0—1.6升C.1.6—2.5升D. 2.5—4.0升2. ()汽车正常行驶时, 发动机飞轮转速和离合器从动盘转速相比A..前者等于后者 B 前者小于后者 C..前者大于后者 D.前者大于或等于后者.3. ( ) 活塞裙部断面为A圆形. B. 椭圆形 C. 多边形 D. 圆形或椭圆形4. ()从发动机前面向后看时, 活塞裙部纵槽方向位于A.前面B.后面C.左面D..右面5. ()化油器的省油装置工作时, 混合气浓度为A. 浓混合气 B 稀混合气 C. 标准混合气 D浓混合气或稀混合气.6.()发动机在完成一次工作循环时,气门重叠现象发生次数为A..1次 B 2次 C. 3次 D.4次7. ()曲轴主轴承的润滑方式为A..压力润滑 B飞溅润滑 C. .浸泡润滑 D. .压力润滑或飞溅润滑8. ()气门顶置式配气机构的凸轮轴布置型式可以为A. 下置式B. 上置式C. 前置式D. 后置式9. ( ) 减振器压缩行程阻力和伸张行程阻力相比较A..前者等于后者 B 前者小于后者 C..前者大于后者 D.前者大于或等于后者10 ( ) 钢板弹簧在变形时, 各片之间有滑动. B 无滑动 C. 有滑动或无滑动 D.不产生摩擦二. 判断改错题(下列命题你认为正确的请在题前括内打“勾”,错误的打“叉”,并改正。
2016武汉理工大学能动学院船舶柴油机复试大纲
1.柴油机的基本知识理解柴油机的基本结构组成及系统。
理解船用柴油机特点、压缩比概念及其影响因素、气阀正时及正时圆图的概念。
理解二、四冲程柴油机的工作特点。
初步建立废气涡轮增压的概念。
了解二冲程柴油机扫气型式。
了解柴油机换气过程进行情况和特点。
理解充气系数的定义及其影响因素。
了解柴油机的分类。
2.柴油机的结构及主要部件掌握筒状活塞组和十字头式活塞组的结构型式与特点。
理解密封环的作用、工作原理、工作条件、断面形式、搭口形式及材料。
理解密封环的泵油原理和刮油环的作用、特点及工作原理。
了解承磨环的作用、材料及使用注意事项。
掌握活塞冷却方式及冷却液的输送方式和冷却机构的结构原理。
了解活塞销作用、连接方式、工作原理。
了解活塞杆填料函的作用和结构原理。
了解气缸套的工作条件及典型柴油机气缸套的结构特点。
了解气缸盖的工作条件、常用材料、结构型式、缸盖螺栓的上紧方法及与气缸的密封形式。
掌握气缸套磨损、腐蚀的机理、成因分析及解决措施。
了解连杆的类型和结构特点。
掌握连杆螺栓的特点及其紧固方法。
了解十字头和导板的作用、结构原理。
理解十字头轴承的工作特点及提高工作可靠性的措施。
了解曲轴的作用、结构特点、分类和曲轴内部输油孔开设方式及平衡重的作用。
重点掌握气缸发火间隔和发火顺序的决定原则。
重点掌握活塞裂纹、活塞顶烧蚀、活塞环常见故障、连杆螺栓折断的成因分析及柴油机磨合理论。
掌握曲轴疲劳损坏形式及其成因分析。
3.燃油喷射与燃烧了解燃油的梨花性能指标的含义和柴油机燃油的规格与选用原则。
了解燃油的喷射过程。
理解喷油规律及其影响因素。
了解喷射过程的压力波动。
掌握异常喷射的产生原因和喷油提前角、喷油持续角的概念。
了解对喷射设备的基本要求。
重点掌握回油孔式喷油泵的结构、工作原理、优良调节原理和方式、出油阀的功用与卸载方式。
了解回油阀式喷油泵的基本结构、工作原理及优良调节方式。
了解可变喷油正时机构的原理。
理解启阀压力的概念和多孔式喷油器的结构原理。
2012年能动学院03组面试题
以下是2012年能动学院03组面试题,我们组一共17人,我也没记全,回来问他们要的,你们看看吧,顺便把前几届的复试题一并贴出,做个参考2012能动面试题1号同学(专业)(1)真空度;(2)提高火电厂机组的经济性;(英语)(1)印象最深的一节课;(2)为什么选择华电;2号同学(专业)(1)经济危机对电厂的影响;(2)为什么用郎肯循环不用卡诺循环;(3)锅炉排污,连续排污,定期排污;(英语)(1)谈谈自己的大学和专业(2)最喜欢的一门课;4号同学(专业)(1)我国能源现状,用什么技术解决;(2)水的临界点温度和压力;(3)超临界锅炉的参数,我国的典型超临界锅炉电厂;(英语)(1)对华电的了解;(2)家乡家庭的介绍;5号同学(专业)(1)水的临界参数、压力、典型直流锅炉的锅炉参数;(2)我国能源现状、用什么方式解决;(3)相对误差和绝对误差的区别;(4)本科毕业设计、本科参加创新活动和竞赛;(英语)(1)介绍家乡、家庭情况;(2)考研后未来的计划;6号同学(专业)(1)冷却塔抽吸力;(2)中国能源分布现状;(英语)(1)介绍学校和专业、专业基础课(用英语);7号同学(专业)(1)工程热力学怎么用到生活和实践中;(2)提高电厂中锅炉运行效率;(3)什么叫可再生能源;(4)毕业设计做什么;(英语)(1)印象最深的一门课;8号同学(专业)(1)凝汽器真空、漏入空气怎么办;(2)热电联产定义;(3)结合自己专业说说专业发展方向及趋势;(英语)(1)最喜欢的电影;(2)为什么考华电、从哪些方面了解学校;17号同学(专业)(1)什么是不可压缩流体、水击现象中的水是不是不可压缩的流体;(2)封闭房间打开冰箱能不能降温;(3)什么是汽轮机的级;什么是汽轮机的反动度;(英语)(1)最喜欢的城市,为什么喜欢;(2)理论型研究和实践型研究哪个更重要;哪个需要更高的智商;2011及之前面试题动力工程系热能工程面试题:1、什么叫理想气体2、对流换热系数的影响因素3、什么叫质量力、表面力4、一次风二次风的作用,那个风速高5、什么叫临界热绝缘直径2011能动学院先进能量所考研面试汇总于结束了考研。
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2012年有幸参加了武汉理工大学能动学院研究生招生复试下面是一些能够回忆起的考题希望会对大家有所帮助:
一、专业课考试部分:总分100
测试技术考题
1、什么是压电效应?应用实例?
2、什么是光电效应?应用实例?
3、什么是霍尔效应?应用实例?
4、测量误差按其影响程度可分为哪三类?分别作简单的介绍?
5、系统误差按产生的原因可分为哪几类,产生的原因是什么?
6、如何利用扭矩法测涡轮等的转速?关于测转速的方法好好了解一下。
柴油机考题
1、柴油机的固定件与活动件的名称?画出柴油机的简图并标出运动件与固定件。
2、柴油机燃料的燃烧分为哪几个阶段?分别有什么特点?
3、高置水箱的作用?
辅机考题
1、泵的分类?并举例?
2、什么是液压传动?应用实例?
3、喷油泵与喷油嘴的区别与作用?
智能交通运输系统
1、如何解决打的难?
2、对道路建设的一些建议?
3、如何利用智能交通解决交通拥堵?
4、你赞同单双号限行吗?这样做的利与弊?
能回忆的就这么多了,总共有26题测试技术10题,柴油机5题,辅机5题,智能交通运输系统6题考试要求任选20题解答,考试时间120分钟
二、英语测试
听力总共30题,8个短对话4个长对话(每个长对话有4个小题)短文一篇总共6小题4题单词2题句子
翻译部分
一篇中译英是与专业相关的大概也就5—6句话不长的然后一篇英译中也是专业相关的长度差不多
时间60分钟总分100分
三、面试部分
首先自我介绍中英文都可以没有要求,但是最好样英文自我介绍,然后就是文献翻译从打印好的一篇文献里随便挑一段让你读完后就翻译,之后就是一些老师提问什么都会问的,这个只要对自己所学过的所有专业科目有一个概括性的认识就行了,当然有些老师也会细问的,因人而异。