L & T Placement Paper Candidate Experiences NIT Jamshedpur-8 Dec 2010
I appeared for L&T (Heavy) interview on 8th October 2010. I am willing to share my interview experiences with you.
L&T (Heavy engineering division) shortlisted 7 candidates from Electrical Engineering department on the basis of a written test. The test was completely of aptitude type. There were three sections ? verbal, logical ability and numerical ability. Questions were easy. A few questions were a bit lengthy. You better leave them, because they are time consuming. There was sectional cut off, So you need to be careful about time management.
For the interview we were called to Kolkata on 8th of October 2010. Interview started from 9 am. I was on the 3rd number. The interview of the first guy went a bit too long(1 hour 20 minutes). We saw him coming out of the interview room uttering a few curse words. It was scary for me. Then another guy went inside and came out after about 45 minutes. This guy was a bit cool. Now it was my turn.
I am presenting to you the line by line actual conversation between me and the interviewer.
Interviewer: Have you prepared something?
Interviewer: That?s good. It makes things easy for us. We test you on your basic concepts. If you study just before the interview, you are flooded with complex equations. And we don?t want to hear that. We just want to test your basics.
Me: They asked a few questions that I could not answer. Though the questions were simple. Like what?s the efficiency of a generator etc. etc.
Me: Whatever you want.
Me: I like control system and circuit theory, but I like machines too.
Interviewer: So, you like circuit theory. Tell me, which bulb has a higher resistance a 40 W or 60 W?
Me:- Since, R is equal to V squared by P so more the P lesser the R.
Interviewer: But, R is also equal to P by I squared. Why not apply that?
Me: Because, bulbs are created with equal voltage rating not equal current rating.
Interviewer: Now, tell me the working principle of induction motors.
(I start explaining, the stator, the rotor, the rotating magnetic field and shorted rotor, I say something on which they raise a question. I say, the induction machines works on the same principle as that of a transformer.)
Me: The staring current is 5 to 6 times the full load current.
Interviewer: Why so?
Interviewer: Now, I start getting confused. First I tell them that the effective reactance of the machine goes on increasing with speed and then I tell them that the emf generated in the rotor decreases with time. (They give me 5 minutes to thing about it.)
(I repeated the same answer after thinking (that the emf generated in the rotor decreases with time.))
Me: Yes sir.
Then solve this: What can be the maximum speed of an induction motor in India?
Me: It will go beyond the synchronous speed.
Me: Because it can run at variable speeds.
Me: In the locomotives.
Me: I am not aware of any other use sir.
Interviewer: Ok, you can go.
Me: Thank you, sir.
2009-2016 downloadmela.com. All rights reserved.