L&T Infotech Technical Questions papers previous years

L&T Infotech Campus Selection Placement Paper,GD,Final Selection Rounds

qustion papers of previous years by the persons appearing in the L&T infotech  technical institute

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L&T Infotech Placement Papers | L&T Infotech  Interview Procedure | 
L&T Infotech Aptitude Questions | L&T Infotech Technical Questions | 
L&T Infotech Interview Questions
 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  ?