前50个机械工新利18app官网备用程师访谈问题

1.简介

The Core Interview is one of the most challenging Interviews among all. It has various stages and good quality questions that one needed to answer to qualify the same. This article will be taking you through one of the most asked technical mechanical engineer interview Questions in the mechanical Engineering Interviews and how to answer them. We will also be telling you about how Interview is conducted and some of the demanding jobs for fresher’s and experienced professionals. So, let’s get started.

2.新生和经验丰富的专业人士的工作简介

A Mechanical Engineer has good scope in various domains. Talking about the Industrial requirements, it varies from Organization to Organization. Overall, a skilled Mechanical Engineer will find Job more quickly than one with only theoretical knowledge. Keeping pace with growing Industries is also very important. We are moving towards Industry 4.0, and the requirements of a Mechanical Engineer in Industrial Automation (Such as Robotics) are essential. Developing skills in this domain will give you a better edge than others.

下面的列表包含一些工作概况，并需要经验丰富的多年：

工作资料	经验丰富的年份*
操作	0-3 Years
供应链	0 - 5年
设计工程师	2-5 Years
Manufacturing Engineer	2-5 Years
Process Planning	5 - 10年
Technical Lead	5 - 10年

*通过查看不同公司的工作要求收集的数据，并且某些公司可能会有所不同。

还有其他各种核心工作，需要相同的经验，但这是一些苛刻的工作。总体而言，公司需要候选人来满足以下要求：

Bachelor’s and Master’s degree in Mechanical Engineering and related fields (Master’s preferred)
具有各种知识的卓越计算机技能卡德-CAM软件
能够运行和验证模拟以获取现场测试的数据和比较
能够编写出色而全面的技术文档
Highly analytical skills with the ability to observe minute detail of a component

3. Interview Rounds

不同的公司有不同的标准来选择给定职位的候选人。我们已经搜索了各种大型OEM，制造行业以及一些小规模工作的行业的招聘系统。在研究了这些组织的所有数据之后，我们对如何进行访谈进行了详细的解释。

步骤1：在成功获得基于简历的筛查或书面测试的资格之后，学生有资格接受面试。

第2步：Some of the Big companies (Where a large number of students have been shortlisted from step 1) conductDigital interviewsto shortlist a few of the highly skilled candidates.

步骤3:Candidates Qualified from第2步go througha Personal technical Interview与公司代表亲自或在线代表（最好是Skype）。

Step 4:Candidates Qualified from步骤3go through个人人力资源面试测试候选人对组织的行为和特征。

另请阅读：

4. Top 50 Mechanical Engineer Interview Questions

该标题包含机械工程访谈中提出的前50个技术问题。新利18app官网备用这些如下（没有特别的顺序）：

Q 1: What is the second law of thermodynamics?

ANS：It denotes that the Entropy of the System can never reduce with time.

Q 2:What is the difference between elastic centre and shear centre in a material?

ANS：身体的弹性中心位于重力中心，而剪切中心则位于没有扭曲的人体上的点。

问3：解释奥托周期？

ANS：Otto cycle is the air standard cycle, which defines the working of 4 Stroke Petrol Engines. It is based on a constant volume process, where volume remains constant during power stroke.

问4：哪种类型的合适类型？

ANS：拟合被归类为：清除拟合，过渡拟合和干扰拟合。

一种。清除合适：如果两个连接零件具有一定的间隙，则称为清除率拟合。

b。干扰拟合：大小是这样定义interference between the two mating parts.

c. Transition fit:It is the fit in which clearance and interference fit can be obtained with the specified Tolerances.

问5：定义通用耦合？

ANS：它用于将轴（并使它们旋转在一起）连接起来，使轴相互倾斜。

问6：制动器的主要类型是什么？

ANS：刹车的主要类型包括

一种。液压制动器

b。电刹车

c. Mechanical brakes

问7：什么是膝盖？

ANS：It is done on Lathe machine to create the pattern of the bar that has Handle

问8：定义工程图。

ANS：It is the technical documents that represent the final design of the components and is passed to the manufacturing unit for production.

Q 9：定义最少的计数。

ANS：它是可以正确测量不同仪器的最小值。（了解一些使用过的测量仪器的最少计数）

问10：什么是GD和T？

ANS：GD and T stands for Geometric Dimension and tolerancing. It is the dimension measuring system that is widely used in Industry following lean manufacturing to reduce the production of defective components.

问11：管道和管之间有什么区别？

ANS：Pipe is measured with its Outer diameter and Tube is measured with respect to its Inner diameter.

Q 12: Define Case hardening.

ANS：这是热处理过程，使外表面更难增加硬度。通常是对低碳钢进行的。

问13：过程流程图是什么？

ANS：它通常用于工程和化学工程，代表制造中的设备和工艺流。

问14：支撑杆和柱之间有什么区别？

回答：柱始终是垂直的，仅在轴向方向上承载压缩负荷，而不需要垂直柱，并且可以在任何方向上承受压缩载荷。

Q 15: What is the difference between Fatigue and creep?

ANS：疲劳是在波动和不均匀载荷下观察到的材料的趋势，而蠕变是在高温下恒定负载下观察到的物质的趋势。

Q 16: What is the definition of Mechanical refrigerator?

ANS：机械冰箱的工作是从所选位置去除热新利18app官网备用量。

问17：什么是P＆ID？

ANS：它来自管道和仪器图。它显示了工艺设备和管道以及详细的仪器和控制设备。

问18：氮在焊接中的作用是什么？

ANS：It is used to prevent porosity i.e., prevent Oxygen entering into the metal while welding.

Q 19: What is the cause of white smoke in a Two-stroke locomotive engine?

ANS：This happens when the engine is running out of fuel. It is very harmful and should not happen, as it can overheat the parts.

问20：涡轮和泵有什么区别？

ANS：Turbine is used to transfer the energy of fluid to produce mechanical work, while the pump is used to transfer the energy developed from mechanical work to the fluid.

Q 21：门阀的不同类型是什么？

ANS：不同类型的栅极阀是平行磁盘门阀，楔形门阀和单盘门阀。

问22：什么是拼字图？

ANS：它是任何对象的3D表示，其中所有视图相对于彼此而言为90度。

问23：什么是挤压？

ANS：这是通过将工件穿过不同滚筒的工件延伸的过程。

问24：什么是牛顿液？

ANS：剪切应力和速度梯度线性关系后的流体分类为牛顿流体。该常数称为动态粘度。

Q 25: What are the conditions for a gas to be assumed as perfect gas?

ANS：Following are the conditions for a gas to be assumed as perfect gas:

[一种]。它应该满足状态方程（PV = NRT）

[b]。气体的比热应在温度下保持恒定

问26：气动系统比液压系统的优势是什么？

ANS：它们便宜，响应更快，没有漏油问题。

问27：什么是什么超临界锅炉?

ANS：他们缺少沉重的鼓无法将蒸汽与蒸汽的混合物分离。

Q 28: What is the difference between Cast Iron, Mild steel and High carbon Steel?

ANS：区别基于碳含量。碳钢具有0.1至0.45％的碳含量。高碳钢具有0.45-2.1％的碳含量，铸铁具有2.1％-6.67％的碳含量。

Q 29: What are the different types of compressors used in Gas Turbines?

ANS：所使用的不同类型的压缩机是轴向压缩机，离心压缩机和混合流压缩机。

问30：哪些不同类型的冷却塔是什么？

ANS：发电厂中使用的两种不同类型的冷却塔是：

一种。自然草稿

机械/新利18app官网备用诱导通风

Q 31: What is the Application of Zeroth Law of Thermodynamics?

ANS：Thermometer is the Instrument working on the Principle of Zeroth Law of thermodynamics.

Q 32：气动系统和液压系统之间有什么相似之处？

ANS：两者都使用流体（气动使用压缩空气和液压使用不可压缩的液体）在给定点繁殖力。

Q 33: What is the main difference between a 2-Stroke Engine and a 4-Stroke Engine?

ANS：2个中风引擎包含来自预先发射和点燃后电荷流的端口，而4个中风引擎为此目的带有阀门。

Q 34：解释飞轮在基于内燃烧的车辆中的作用？

ANS：内燃机在曲轴上产生非均匀扭矩。因此，为了赋予车轮均匀的力量，使用飞轮。

Q 35: Name the component in the Automobile that works on the Principle of Fluid coupling and in which type of vehicle is it used and what is its function?

ANS：Torque converter used in Automatic transmission-based vehicle works on the principle of Fluid coupling. Torque converter is the replacement of Mechanical Clutch in the Manual transmission-based vehicle, and is used for engagement and disengagement of Energy source from the gear train.

Q 36: What is the difference between first angle projection and third angle projection in Engineering drawing?

ANS：为了获得第一个角度投影，将对象放在投影平面和观察者之间的第一个象限中。在获得第三个角度投影时，将对象放在第三个象限中。

Q 37: What are the resistive forces acting on the vehicle during various driving conditions?

ANS：Different conditions are as follows:

一种。车辆启动时：Inertial force, rolling resistance force, and gradient force

b。When the vehicle is moving with constant velocity:空气动力阻力，梯度力，滚动力

c. When the vehicle is moving and accelerating:空气动力阻力，梯度力，滚动力, Inertial force.

Q 38：汽车中变速箱的用途是什么？

ANS：Gearbox are used to Multiply the torque at the starting (When the requirement of torque is High and speed is less). In short, Gearbox provides the vehicle with varying speed and torque at different conditions.

Q 39: What is C- Rate in an Electric vehicle?

ANS：c-费率是定义电池充电和放电的时间的速率。C率的倒数给电池充电或放电的时间（数小时）。

问40：煤炭发电厂的苍蝇垫圈是什么？

ANS：粉煤灰是燃烧过程中煤炭的副产品，它存在于锅炉顶部以进行收集。

Q 41：苍蝇和底灰之间有什么区别？

ANS：Fly Ash are lighter and are present at the top, while Bottom Ash are heavier and are present at the bottom of the Boiler.

Q 42: What is the difference between Petrol and diesel engine?

ANS：柴油发动机的点火因素是由于燃烧室中空气压缩引起的温度升高而引起的，而在汽油发动机中，点火开关是由火花塞引起的。

Q 43：什么是自动点击或自命不凡的温度？

ANS：它是该物质发生自发点火的最低温度称为其自动点火温度。

Q 44：节能和能源管理有什么区别？

ANS：Energy Management focuses on the minimum use of Energy for generating maximum power output, While Energy conservation is the first law of thermodynamics that states that Energy can neither be created nor be destroyed but can be changed from One form to another.

Q 45：什么是泵中的气蚀？

ANS：它是气泡的形成，可能导致由于叶轮周围相对较低的压力而产生的腐蚀。

Q 46：泵的NPSH是什么及其意义？

ANS：NPSH代表净正吸头。The value of NPSH Defines whether the Pressure at the Outlet will cause cavitation or not.

Q 47: Which furnace is used for heating Metals?

ANS：Induction furnaces are used for heating Metals.

Q 48：管道直径与压力损失之间的关系是什么？

ANS：在层流下，管道直径与管道中的压力损失成反比。

Q 49: What is Curie Temperature?

ANS：这是顺磁金属以上变为铁磁的温度。

Q 50：定义屈曲因子。

ANS：它被定义为在各种载荷和最小回旋半径下等效柱长度的比率。