Interview Experience | DRDO| Mr. Vaibhav Rastogi | Scientist 'B' | DRDO Recruitment |

About this video:
This video will help you to prepare for the interview for the post of Scientist in DRDO.

Here is the facebook link of Mr. Vaibhav Profile   / vaibhav.rastogi.5836  

DRDO 2020 Interview Mechanical

The panel consisted of 5 members of which one was chairman. The interview duration was 40-45 min. A tab and electronic pen were given and whatever I wrote was getting displayed on the screen behind me.

I entered the room and greeted everyone. chairman sir said Vaibhav come and sit.
Chairman: Vaibhav you have passed BTech in 2016 what were u doing
Me: sir I have done MTech in mechanics of fluid and currently I am doing a Ph.D.
Chairman: So 1-year gap for preparation. when u have joined your Ph.D.?
Me: yes sir in July 2019

Chairman: Will u leave your Ph.D. if selected here. I replied I will join here but if got permission then will complete my Ph.D. part-time.
He told me good and asked from where I have done BTech was it a govt or private college. I told him privately. He then asked me what project are u working on. My project was related to aerodynamic issues related to training passing through a tunnel. He then asked me to explain my model and how I have done my project.
One of the interviewers asked me to show some practical examples related to my project and asked me how to model those.
The interviewers did not ask me about my favorite subjects. They asked questions from whatever field they wanted to.
Interviewer1: (engineering drawing) he asked me to assume a sphere which has two holes drilled perpendicular to each other. he asked me for front view and top view projections. He was going to ask some more ques but I told him that I have studied this subject a long time ago I cannot remember that. the chairman told me that happens. write Navier-stokes eq., how to do pressure-velocity coupling. have u done grid independence test in your project. what is it?. difference between solid and fluid is related to shear strain.

Interviewer 2: what types of forces u encountered in your model. mostly project-oriented questions. which model. He asked me to give some examples like assume a ship in the water and asked what forces will it encounter.

Interviewer 3: He then asked me to assume a rocket moving with some acceleration what are the forces. Take a section and explain. He told to leave it and recommend me a shape of missile nose based on your project findings( In my project I have three shapes of train head). I told some but not able to satisfy his ques.

Interviewer 4: Suppose u want to fit a hydraulic actuator in any device. what will be its shape have u heard of the hydraulic actuator? I explained to him. what are the other devices which are used with it. He asked me what is a hydraulic accumulator. I told him it is used to store pressurized fluid. Then asked what is the difference between the accumulator and the storage tank. are both the same? Somehow I was able to answer and told the exact difference. accumulator stores when in extra and supplies it in case of deficiency. He told yes this is the difference. then he shifted to MD and asked do you know flange joint. explain, draw and how will u design a bolt in a flange joint. I explained to him correctly. He then asked which dia will u take for analysis (core dia) and asked about core dia. Then asked me how to represent threaded bolt in ED (I draw something and told I cannot recall).

At last chairman, sir said good and asked me to leave.

All the senior scientists (interviewers and chairman) were very supportive they helped me when I got stuck in some ques. They gave hints. I was not able to answer some ques but overall it was a very nice experience. They are looking for a scientist who is interested in doing research not just doing the job. Overall they asked very practically and research-oriented questions (maybe as I was doing a Ph.D. and it may differ in other cases).

Result: recommended for selection as Scientist B
Time Slab:
0:00 Start
2:45 Post in DRDO
5:30 Procedure and criteria of selection
9:19 Written exam of DRDO
13:55 Specific approach to crack Written exam
14:22 Planning for preparation of DRDO
16:15 Feelings after Interview
17:32 Panel of Interview
19:00 How to handle nervousness
21:16 Questions of Interview
24:00 Advice for aspirants



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IIT Guwahati:    • Видео  
IIT Roorkee:    • Видео  
IIT Madras:    • Interview Experience |  IIT Madras | Mr. P...  
IIT ISM Dhanbad:    • Видео  
IIT Bhubaneswar:    • Видео  


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