Doctors.....

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Today is the National Doctor's Day. On this day, we should honor our Doctors for their relentless service across the nation. I would like to express my heartfelt thanks to every Doctor in the world who help us to come/survive into this world as human beings. In the recent period, everyone in the world is going through a pandemic disease (COVID-19), which almost ruined the rhythm of anyone's life. As human beings we are told to stay in homes and animals can roam around to enjoy nature. Doctors are one of them who are providing their service without considering their own life and/or family. We should be kind/appreciate their service during these hard times and make them feel that they are not alone in this world we are next to them. This move/mind process will make them feel strong and more positive in these times. 

Especially, this blog is dedicated to two of my friends who are Dentists one in Australia and another one in India. I am really grateful to have them in my life as close friends and support system. I really want to thank God that I meet them as Doctors + Friends of my life. Now, let's talk about Doctor as a career me as an Engineer have a lot of friends as Doctors who are Surgeons, Physiotherapist, Dentist and Ayurvedic. Let's answer the most asked question whether a Doctor or an Engineer? I hear from so many people I don't want to be a Doctor as it is very hard; thus, I will go for Engineering which I would say you're lying to yourself. Everything in life that you do is not easy you have to go through a lot of hardships and hard work. What I believe in is "Everyone has the same capability the only thing which matters is how you use it". Never take granted statements from anyone do whatever you like to do; otherwise, in later days you will say (to a third person) because of you I did this, but the time will never come back for you. 

Referring to my friends I have seen their struggle life as Doctors and in present, they are in great positions. What I learned from them is never give up always try hard there is always a solution to the problem in life. It is a saying "If you have a problem that means you also have a solution". Thus, I want to convey that you will find a lot of problems/bridges as a student or a professional; however, stay positive and do your job honestly. God has given a precious life to you use it in a way to make other people learn from you, share experience with others, if you're in a good position be an influencer (not arrogant), so you can help a lot of aspirants coming up for future. 

What I always look for in my life is respect, compliments, to help anyone whom I can and a good human being. I want to end this blog with a quote "When there are tears, you're a backbone. When there is pain, you're medicine. Considering the recent situation when there is a tragedy, you're everyone's hope" Kindly respect the people who are working as live survivors for you to stay safe in homes.

On my behalf, all the front-line workers earn huge respect and a great salute to them for their services.

Thanks for reading it......

Tire Part II

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In the last blog, we discussed basics about the tires today lets discuss the forces and moments generated in the tire, as shown in the figure below. In tire dynamics, steady-state behavior is assumed which means the tire immediately responds to the change in the slip or tire load. The forces are given as Fx longitudinal force, Fy lateral force and Fz is the tire load respectively. Correspondingly you have moments which provide movements to the tire such as self-aligning moment Mz. From the figure, it can be seen that the tire is travelling at a horizontal speed of V with the components as Vx and Vy. The slip occurs while cornering of the tire or drive/brake torque; thus, you have slip speeds. 

The rolling speed of a tire is given as Vr = Omega*Re i.e., angular velocity*radius.

Re is the effective rolling radius of tire which changes based on the conditions such as driving or braking. During braking, the tire stops that means the Re is increased and vice versa for driving. In addition to it, when the tire is travelling with no acceleration or braking torque it is known as a free-rolling condition.

This blog is just the basics of tire dynamics if you are interested to know more about this topic kindly comment. 

Figure: Reference Vehicle Dynamics Book Joop.

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About Tire..

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The tire a deformable component which provides contact with the surface due to the information there is the loss of energy know as "Hysteresis losses". It is made up of rubber compounds, steel piles, beads, etc. The tire parameters have an effect on the tire properties; thus, result in compromise between the properties. Therefore, the manufactures/design engineer has to judge the tire properties based on the requirement of the vehicle performance. The tire is an intricate component of the vehicle and it affects the vehicle handling performance as it has contact between the vehicle and the road (effect of forces). Hence, the simulation model of the tire is developed and the results/performance is analysed before implementation. The tire transfer forces in the wheel plane under various conditions such as braking, driving. Fundamentally, the tire model used is based on the Magic Formula (Nonlinear) developed by Prof. Pacejka (Refer wiki: https://en.wikipedia.org/wiki/Hans_B._Pacejka). Basically, the tires are classified into two categories: Cross-ply and Radial. These tires are classified based on the movement of the piles and cord, i.e., structural differences,  flexibility, etc. Mostly, radial tires are preferred over the cross-ply tires due to their resistance towards the deformation during cornering, provides good ride comfort as posses higher flexibility and better fuel economy.  

The outer part of the tire is cut into a specific tread pattern so-called a "tire profile" to guide the water away during wet conditions and to maintain good adherence to the contact surfaces. The tire manufactures have to meet certain requirements based on vehicle performance such as low rolling resistance, low hysteresis losses, good wear resistance, etc. As it is also responsible for the vehicle performance/handling characteristics and affects the response of the vehicle based on the type of the tire, i.e., tire properties. 

In the next blog, we will discuss the basics of tire dynamics.

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How to prepare for ESE Exam?

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Let’s today talk about what is ESE, Departments you can work in and how to prepare for it.

What is ESE? 

It is an exam conducted by UPSC for Engineering aspirants those who want to join Govt. sector as a first-class officers/class A officers 👮. The exam provides you with a great opportunity to join the high-class Govt. sectors. The selection of Departments depends upon the cut off marks of the specific year. In my previous blog “ESE or GATE” I explained that there are three milestones of the exam beginning with prelims which are categorized into two exams: the first one is of General studies and another one is Technical paper (specific to your domain, e.g. mechanical, electrical, etc). The general studies exam accounts for several topics such as material science, machine drawing, ethics, etc. The topics can be referred by the official website of UPSC. Marks for each G.S topic may range from 5% to 15% of the total marks in the paper. 

I receive so many queries about whether general studies exam is important or not. Firstly, it is an exam which, itself means it is important; however, you can make a weightage difference in both the papers, i.e., general studies and technical paper. More explicitly, the general studies paper provides you with an advantage if you score a higher mark, might it not go the same for the technical paper as compared to the general studies paper. Thus, if you try hard for G.S and score 100-120 marks out of 200 I can ensure that you will receive a good mark in total, i.e., way above cut off. But you also have to work hard for the technical paper. After you cleared prelims you have to prepare for the mains exam which is in total technical exam respective to your domain. To prepare for the mains exam you will have 3-4 months of time the paper would be subjective. Later to it, you will have an interview with the ministry members at UPSC Delhi. 

For assistance, refer to UPSC official website and/or made easy and/or contact me.

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How to prepare for GATE?

Welcome to today’s blog everyone,

Let's talk about how to effectively prepare for the GATE Examination => I will list down the preparation steps and strategy to prepare for the exam.

My opinion "Prepare for the GATE Exam only when you want to work as a hardcore engineer"; otherwise, there are several options such as AFCAT, CAT, XAT, MAT, GMAT, etc. Kindly, don't quote me on this its totally my perspective.

First of all, it's a good choice to start the preparation of the GATE Exam when you are in your third year of the Bachelors. It requires an extensive study/dedication towards the preparation. Predominantly, the exams require concepts, application of the topics, strong basics of maths & aptitude and plus smart thinking (lateral thinking). The exam posses more weightage in the following topics such as maths, production, theory of machines, strength of materials, etc. The preparation should be in such a way that you can complete the course once, until, you reach the fourth year. Imagine you own strong concepts and application then start with practising old papers of GATE this will increase the process in practice and you can visualize the level of questions. At least you should practice the old GATE papers two times this will also help you in building the confidence, how to solve the questions in a stipulated time and the questions you can expect. While solving the old papers you will encounter some questions which you will feel are difficult / you cannot solve them at once so please mark them; thus, next time you know that these were the questions/topic you couldn't solve at once. I can ensure you this will certainly help you in the final days of preparation. Next, if you don't understand any topic refers to the fundamental books. If you don't know which book to follow there is a list of book on the official website of IIT. In addition to it, you can also follow the NPTEL lecture if you still have doubt about it. So many people ask me whether to make short notes or not it totally depends on you; however, I would suggest you make notes for formulae because the formula sheet will certainly help you in the last minute of preparation. 

Therefore, if you follow the preparation steps mentioned by the year of engineering you have remarkably higher chance to crack the GATE with a good GATE score. The preparation of this exam will also help you in the exams such as ISRO, Technical entry of UES and State Exams. I have experienced a lot of competitive exams including GATE, ISRO, Ordnance factory and ESE, etc. One suggestion doesn't study on the last day give some rest to your mind listen to music and have mental peace. I hope this was helpful for future aspirants.

Thanks a lot, everyone for reading it...............

ESE or GATE?

Welcome to today’s blog everyone,

Today let’s talk about GATE or ESE  =>

First of all, I want to say both are great opportunities for an engineering career. It totally depends on a person what he/she wants from his engineering career. I will list down some differences which, will provide a clear mind map towards both the exams.

Beginning with GATE (Graduate Aptitude Test in Engineering), it is a technical engineering exam based on your domain of engineering. It requires strong application of topics, concepts and critical mindset. This exam can provide you with two options: Job in PSU (Public Sector Unit) or M.Tech in IIT / any govt. institution. The options can be selected based on the GATE score you obtained; however, the problem arises when you want to join IIT for your M.Tech which, course/campus to choose. I would suggest select the campus-based on the domain you want to pursue, for instance, you want to do M.Tech in Thermal go for IIT Bombay, M.Tech in Computer Science join IIT Bombay or Delhi, M.Tech in Electronics/Optics join IIT Delhi and M.Tech in Electrical join IIT Kharagpur these are few examples and are the top-rated department of the specific campuses.

Next, the Engineering Services Examination (ESE) consists of the technical part of engineering + general studies which is different from the GATE exam in the syllabus as well as the pattern of the exam. Doing a preparation of ESE provides you with a great knowledge of concepts and social study which, is even helpful for various State exams. It consists of three milestones, i.e., prelims exam, mains exam, and then a personal interview. The exam provides you with the opportunity to join various reputed govt. departments, e.g. Ministry of Engineering Services, Indian Railways, Telecommunication and Broadcasting, etc. If you become an ESE officer that would be one of the proud moment of your life as you receive your joining letter by the President of India. I cannot express this moment of joy in words but would an unbelievable experience in your life. My preference would an ESE officer for our nation rather than PSU.

Thanks in advance for reading it...

Why not Master’s in Mechanical Engineering?

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Hello everyone,

Let’s talk today about why not masters in mechanical;

To start this topic let’s start with Bachelors in mechanical engineering. In my last blog I mentioned that doing a Bachelors is same like a foundation of the house. In which you study about various domains such as Machine Design, Fluid Dynamics, Thermodynamics, etc. Within the journey of your Bachelors (4years) you start focusing/adoring on a particular subject, for example, Thermodynamics. Furthermore, if you plan to do a Masters in Mechanical Engineering than again you will find a big domain to study; thus, you get apart from the field you adore, e.g., Thermodynamics.

Therefore, after you’re done with your Bachelors most of the people wants to get specialized in one filed because there are 1000’s of domain which you can’t grasp so you want to master one of them. That’s the reason everyone in Masters choose one domain which they like; however, that doesn’t mean they do not know what are the other topics. Doing a Masters in one specialized field opens a gateway to master one domain with full potential and criticality. I know switching from a Mechanical background to a Masters course in Robotics and Control, Artificial Intelligence within Robots, etc can be challenging but you will prepare your career for upcoming years and would receive a good exposure. 

I hope you find my blogs valuable any question kindly comment and share with your friends and everyone who need some help in the domain of Engineering.

Thanks in advance.

Master’s or no?

Welcome to today’s blog everyone,

Today let’s talk about the difference in between the Bachelors and Master’s in Engineering =>

Bachelors in engineering is a platform which makes you an engineer so called as “foundation” of an engineer whereas, Masters course shape you as an engineer with advanced application and concepts. I get lot of queries about which Masters course to choose further as I have done Mechanical in Bachelors. Ask this question to yourself first in which, field you’re comfortable in such as robotics, control, etc. After you have answer to it go for research and check the future application/technological aspects. If you ask me I would suggest you to do Robotics & Control, Artificial Intelligence within Robots, Cooperate Intelligence and Driver Behavior these topic would be the key research’s within the industries in coming years, but it doesn’t mean these are not research nowadays it does; however, limited. 

Expectation from a Masters course: You learn application of concepts in more depth as compared to the Bachelors course. Doing a masters opens many opportunities within a industry such as in R/D dept., control & automation but very specific to the course which, is about your specialization. However, in Bachelors you have unbounded opportunities which makes it hard to choose where to go? Thus, if you don’t want to have a specific domain you have to comprise with your knowledge as many of us do after Bachelors sad but it’s reality. 

Don’t quote me on this it’s my opinion towards the difference in courses. Any suggestions about the course or universities you can post a comment I can help you with it.

Thanks everyone, for providing me support and taking sometime of yours to read it... I hope in coming days the content will be more interesting.

Intro about me...

Hello Everyone,

It's me Lalit Grover an Automotive Engineer. I joined this platform today to share my experiences and knowledge I have in the field of Engineering. I am undergraduate in Mechanical Engineer and love to read to the books about mechanical core, automotive vehicle, mobile robots and every basic aspect of Engineering. I also have experience of competitive exams such as Gate and ESE during which I got a great exposure to learn and apply them in exams. 

Languages I know: English, German, Dutch and Hindi......

I am ready to help anyone related to the field experience I own. 

Will certainly try to post new content about Engineering...