L&T Infotech Placement Paper & Interview - 09 SEP 2006

L&T Infotech Placement Paper & Interview - 09 SEP 2006 - Tirupathi

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L&T Infotech Placement Paper & Interview - 09 SEP 2006 - Tirupathi..

Answer / srinivas

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Iam Srinivas of Sri Venkateswara Engg. College, Chittoor.

I recently attended L&T infotech campus recruitment held at Sri
Vidyanekethan Engg. College, Tirupathi on 9th -10th of September
(2006) .

Eligibilities:

Should have consistently scored atleast 60% in 10th, intermediate
and
BTECH all sems.

Should not have any history of fails in any class or semester.

Process of Selection:

1) Written test on quantitative aptitude, reasoning and English
each section consists of 30 questions => total 90 questions in 90
minutes.
No negative marks 90 marks.

There is sectional cutoff so you need to score in all sections
properly
The sectional cutoff was around 14-16.

Note: there are 3 sets of papers almost same standard.

2) Technical interview may or may not have group discussion
3) HR interview

Written Test:

Aptitude:

1. In a kilometer race between A and B, A beats B by 9 seconds or 36
meter. Then what is the time taken by B to finish the race.

Sol: When A has just completed the race it means B is behind by
36mts or
completed 966mts. And when a has taken T seconds to complete the
race B
needs another 9 secs to complete the race; that means B runs
another 36mts
in 4sec so his speed is 36/9 = 4mts/sec

So travels 1000mts or 1km in 1000/(36/9)=250secs(time=dist/speed)
So A completes race in 250-9sec=241secs .

2. If 4apples and 6oranges cost 13/- and 2apples & 4oranges cost
7/- find
cost of one apple and one orange.

Sol: subtract 2nd eqn from 1st then we have 2a-2o=6 =>1apple and
1orange
cost 3/-

3. If a person travels for P km in t hrs and then increases his
speed by x
km/hr find his new speed.

a) (p/t)+x b) pt+x c)p/x+t d)pt/x ans:a

4,5,6 questons based on statistics from a bar graph.

7. If a kite is at a height of 50mts from ground and the angle of
inclination from a point on ground is 60degree then find length
of the
kite sting.

Sol: based on trigonometry heights and distances: sin60=height of
kite/length of string(altitude/hypotenuse) .

ans:100/(root of 3).

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8. If avg. of 6 nos. is 8 and later 2 new nos. are added such
that the avg
of the present 8 nos is 6 then what is the avg of newly added
two nos.

Sol:

avg=total sum of values/ no of objects or observation
? 8 =total sum of values of 6 nos /6
? total sum of values of 6 nos=6*8=48
now when 2 new nos are added applying same formula 6= total sum
of values
of 8 nos/8
? total sum of values of 8 nos=48 so the value has not changed
which
means the sum of added 2 nos is zero so avg=zero/2=zero (ans)

9. What % of 4/7 is 4/5?

Sol: {(4/5)/(4/7)}*100= ans =140%

10. By what % should a person sell an article so as to gain a
profit of
24% even after giving a discount of 10 % ?

Sol)

the easiest way to solve such problems is by assuming the cost
price as
100rs
So to get a profit of 24% means to sell at 100+24=124/-
So suppose he sold it at 10% discount initially he sells
at 90rs
so ther is a difference of 34/-

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11. One problem on Arithematic progression

12. One on mean

13. Matrix addition:
If 1 2 3 1 1 1 0 1 2
5 7 9 = 3 4 7 + 2 3 2
2 3 4 1 1 1 1 2 ?
then what is the value of ?

ans: 4-1=3

14. Find the determinant of a 3*3 matrix?

15. A red light glows every 10sec, yellow every 15sec and red
every 18sec.
find the number of times all three glow together from 8:00AM to
9:00AM
(including both times)

Sol : LCM of 10,15,18 = 90
So every 90 seconds all three glow together so in one hour there
are 3600
secs
So 3600/90=40 times but answer is 41 because they glow at 0th
second that
is at 8 Am since both times are included.

16. If a man travels at 30km/hr is behind a car by 40mtrs. In
20sec if he
leads the car by 20mts then what is speed of car?

17. If age of a person is x and his mothers age is 34. then after
how many
years will the mothers age be twice of the son?

18. One more age problem

19. If a person takes 5 days and 8 hrs to dig a trench ; then
how many
persons will dig 3 trenches in 1 day (with each day of 8 hrs work)

20,21,22 questions based on arthematic calculation to check ur
speed in
calculating.

One question based on allegation and mixture go for error and
trial method

I don't remember other 7 questions

Verbal test:

30 questions

Meanings 3 questions:

Faux Pas : means a blunder (spelled as fau pa)
Don't remember other two

Arranging sentences in order(3 or 4 questions)

Finding errors in a sentence(3 Qs)

Reading passage (5 questions ): easy to score atleast 4 marks out
of 5 by
reading questions and coming to passage to search answer also
less time
consuming

Also anologies

Reasoning

Based on venn diagram 3 questions

1) Which diagram best represents musician, violinist and
instrumentalist?

Ans: three concentric circles the outermost circle being
musician the
inner circle instrumentalist and the innermost being violinist.
Because every violinist a musician and instrumentalist but not the
viceversa.
Every instrumentalist is a musician but not the viceversa

2) polygon, quadrilateral and rhombus ?

Ans : the same as above answer rhombus is the innermost then the
quadrilateral and outside is the polygon .

Explaination: a polygon is a 3 or more close sided figure so even a
triangle and pentagon are polygons so is a quadrialateral which
is a 4
sided fig and quad includes rombus, square, rectangle, kite,
trapezium etc
Not able to remember other one

Three questions on seating arrangement .

3 questions based on giving 3 figures and then we are required to
find the
4th fig which comes next in the logical sequence.

Other questions are also not that tough.

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Technical Interview questions:

As I belong to ECE they asked on
define modulation and types of modulation ?
Types of antenna and where is antenna placed in an aeroplane?

What is the antenna used in home for doordarshan chaneel ans is
broad
side array antenna ?
Data bus size of 8086 &8085 microprocessors ?
Ram size of 8085&86 ?
My favourite subjects I was also asked tell me about urself ?

On C:

How to read a string ?
what aboutlinked list ?
Also a puzzle was given to me .

q) if ur given 6 balls of all equal color and identity and 5 are
equalweight find the unequal heavier ball. you are also given a
common
weighing balance ? find the minimum iterations required.

Ans:

first divide the balls into two grops of 3 each and weigh them
then we get
the heavier side .

Next take two from the heavier section and weigh them with one on
each
side if they are equal then the 3rd one is the heaviest.
So 2 iterations are enough.

HR:

Asked on hobbies if ur hobby is collecting stamps then remember
it is
called as philately .

One who is Collecting coins is numismatist.

Be well prepared on questions 4m hobbies

What is ur father and why u didn't go to that field ?

Try making a good impression. Remember "well begun is half done"