1

Wipro Papers

1. if x= sin-1(t), y = log(1-t2), find d2y/dx2 / t=1/2 and -8/3.

2. Element having same atomic number and different mass number.

3. 1+1(1+1/n)+3(1+1/n)2+……=?

4. 17,21,25,……. And 16,21,26…. .. sum of the common hunderd common terms. Ans(101100).

5. X,y,z are senior engineers. A,B,C,D are junior engineers. Company wants to select 4 enginers. Two will be senior and two will be juniors. Y is not front to A, Z is not front to C, B is not front to A, B is selected then who will be 4 members ?

6. A speaks 70% of truth , B is speaking 80% truth .prob. that both are contradicting each other is ?

7. Integration of (2x-3)/((x^2 +x+1)^2 dx is ?

8. Ram is starting from north walking 2 km and turn right walk 4 km and turn right walking 4 km again, turn walked 4 km . Radha walking opposite to Ram .

a.) what will be the distance of Ram direction Radha ?

b.) D.B.T starting and finishing positions. ?

9. If dy= (sec x+ y tan x)dx , then solution is :

10. X^2 -3x +a , the roots (0,1) then value of a is ?

11. A and B's temp. 10 c and 20 c having same surface , then the ration of emmisions is ?

12. X>0, X^2-1 =0 , X^3 +1 =0 , condition for x>0 ?

13. 2 persons have to select from 1 to 25 then , the prob. For not selecting the same number ?

14. there are 10 ques divided into two groups each containing 5 ques. A and B select max of 4 numbers from their respective groups . num of ways to select 6 quiestions I s ?

15. A system P1,T1 is transferred to P2,T2 condition in two forces then which remain constant during the two process. ?

16. An atomic particle exists and particle decay rate . it is in a train , when the train moves a person observes for whether the decay rate a.) increases b.) decreases c.) depend on the directions of movement of train ?

17. C=40% , H=6.7%, O=53.6% . what is the emperical formula for this compoud …. CH2O (ans)

18. Which of the following exchanges positive ions …cl-, nh2- ? (ans nh2-*)

19. What is an ideal solution ?

20. if x -> infinity , integration e^x dx / int e^2x ?

21. cemeatite is represented by ?

22. dead zone in control system means ?

23. warping can be avoided by ?

24. to produce very precise drawing , you would use ?

25. after execution of CMP, a instruction in Intel 8085 microprocessor…

a.) ZF is set and CY is reset.

b.) ZF is set CY is unchanged

c.) Zf is reset, CY is set

d.) ZF is reset , CY is unchanged .

1.) two bodies changed from P1V1 to P2V2 states in two ways , the heat supplied is delta Q and work done is delta W . What is the constant in these two rocess.

a.)delta Q

c.) delta W

d.) Delta Q+delta W

e.) DeltaQ-deltaW

2.) When a free electron is placed in a plane of EM then it moves in a.) in the direction of Electriv field.

b.) in direction of magnetic field

c.) of propogative waves.

e.) of the plane containing magnetic field an propogation direction.

3.) which is not an ideal soln. ? ( Water + ethanol)

4.) the element which have same atomic mass and atomic number are called ….ans= isomers.

5.) Name the phenomean in wich 1 photon is jumped from 1 isomer to another to create two different elts. A.) functional isomers.

b.) stereo isomers c.) tauto isomers or d.) penta isomers ?

6.) in the below compounds which one has 40% C 6.7% H, 53.3% O . what is it'sperical formula ? Ch2O

7.) X rays are coming from a X ray tube . a.) wavelength is below the certain wavelength . b.) above c.) in between D.) out of ?

8.) In triod valve in order to increase the saturation current what has to be done? A.) increase plate voltage b.) reduce dist. Between grid and plate c.) increase cathode potential d.) reduce grid potential. ?

9.) Seven different toys are distriubuted among 3 children . how many ways ?

10.) A,B and C are three speakers . they have to speak along by another % speakers in a function. A has to speak before B, B has to speak before C How many ways ?

11.) Periods of sin( 2pi +3)6pi ?

12.) Series….. 16 , 21 , 25, and 17 , 21, 25 . what is the sum of first hundred common nos . ?

13.) There are two section in a paper, each contains five questions . student has to answer 6 ques. Max no. of questions that can be answered from one section is 4. How many ways ?

14.) A and B are two nos. selected randomly from (1,2,3,25) . what is the prob. That A and B are equal ?

15.) 1+2(1+1/n) +3(1+1/n)^2 . find sum of n nombers ?

16.) two circles of different radii intersect each other . what is the no. of max intersections ?

17.) X=sin^-1 t and Y=log (1-t^2) then find d^2y/ Dx^2 ? (t=1/2)

18.) Fx= 1-cos(1-cosx) / x^4 …. Is continuos at f(0) . then what is X?

19.) In round robin scheduling if time quantam is too large , it becomes ? (FCFS …ans)

20.) the best tool for editing a graphic image is ?

21.) network scheme define a.)one to one b.) many to many c.) one to ,many ?

22.) based on optimal LRU page replacement algo ?

23.) in 8085 after CMP , a what happens ? ( ans….Z set and C reset.)

ELECTRONICS.

1.) questions on dopping effect…

2.) concentration and restivity . asked for conductivity ?

3.) given Ft , Cbe ask for Gm and Rbe, . when a stone bridge made by R and C, what is frequency ?

4.) T resistance C is given find F and Q on crystal ?

5.) Critical fequency and angle theta is given …find max useable frequency ?

6.) Two questions on parabolic reflector on anttena , half wave diocole design ?>

7.) Ramp signal is generated from integrator…whether it is l;ow or high RC.?

8.) Calculate FM bandwidth given max modulation fequency FM , max freq deviation , delta F and 8 pairs alllowable side band component ?

9.) In electronics devices circuits, communication , anttena , propogation of waves and EMI ?

10.) A line passes throgh (1,0) . what is line equations ?>

11.) A ques is like this a done work in 3 days a nd b can do in 2 days …

12.) one U-230 nucleus ois placed in a train moving by velocity emmitimg alpha rays . when the train is at rest the distance between nucleus and alpha particle is x . one passenger is observing the particle . whenthe train is moving what is the dist. Between particle and nucleus ? a.) x. b.) x+vt c.)x-vt ?

12.) what is the resulting soln. When benzene and toluene are mixed ?

13.) one ques on ordering the given chemicals based on their acidity ?>

14.) one ques on reaction of benzene ferric cloride and other chemicals ?

15.) one receiver is placed above the emmmiter and the emmiter is emmiting the electrons . if Elec field is applied in the direction opposite to follow then velocity of electron will increase . kinetic energy will increase ……….

16.) A question on photo multipliers ?

17.) A ques on motion of electrons in electro magnetic field ?

18.) A company requires 55 programmers and 25 system specilists . 10 must do both . how many programmers the company must recruit computer sc ?

19.) What sorting algos have their best and worst case times equal ?

20.) What page replacement algo . has minimumn no. of page faults ?

21.) What is the use of abstract base class ? in C+

Wipro paper(System software)

PART --A

------------------------------------------------------

1) abcD+abcd+aBCd+aBCD

then the simplified function is

( Capital letters are copliments of corresponding letters

A=compliment of a)

[a] a [b] ab [c] abc [d] a(bc)* [e] mone

(bc)*=compliment of bc

Ans: e

-------------------------------------

2) A 12 address lines maps to the memory of

[a] 1k bytes [b] 0.5k bytes [c] 2k bytes [d] none

Ans: b

----------------------------------------

3) In a processor these are 120 instructions . Bits needed to impliment

this instructions

[a] 6 [b] 7 [c] 10 [d] none

Ans: b

-----------------------------------------

4) In 8085 microprocessor READY signal does.which of the following

is incorrect statements

[a]It is input to the microprocessor

[b] It sequences the instructions

Ans : b

----------------------------------------

5) Return address will be returned by function to

[a] Pushes to the stack by call

Ans : a

------------------------------------------

n=7623

{

temp=n/10;

result=temp*10+ result;

n=n/10

}

Ans : 3267

----------------------------------------------

7) If A>B then

F=F(G);

else B>C then

F=G(G);

in this , for 75% times A>B and 25% times B>C then,is 10000 instructions

are there ,then the ratio of F to G

[a] 7500:2500 [b] 7500:625 [c] 7500:625 if a=b=c else

7500:2500

--------------------------------------------------

8) In a compiler there is 36 bit for a word and to store a character 8bits are

needed. IN this to store

a character two words are appended .Then for storing a K characters string,

How many words are needed.

[a] 2k/9 [b] (2k+8)/9 [c] (k+8)/9 [d] 2*(k+8)/9 [e] none

Ans: a

---------------------------------------------------------

9) C program code

int zap(int n)

{

if(n<=1)then zap=1;

else zap=zap(n-3)+zap(n-1);

}

then the call zap(6) gives the values of zap

[a] 8 [b] 9 [c] 6 [d] 12 [e] 15

Ans: b

---------------------------------------------------------------

PART-B

-------

1) Virtual memory size depends on

[a] address lines [b] data bus

[c] disc space [d] a & c [e] none

Ans : a

-----------------------------------------------

2) Critical section is

[a]

[b] statements which are accessing shared resourses

Ans : b

-------------------------------------------------

3) load a

mul a

store t1

load b

mul b

store t2

mul t2

add t1

then the content in accumulator is

Ans : a**2+b**4

---------------------------------------------------

4) question (3) in old paper

5) q(4) in old paper

6) question (7) in old paper

7) q(9) in old paper

------------------------------

Wipro Questions:

1. An electron moving in an electromagnetic field moves in a

(a) In a straight path
(b) Along the same plane in the direction of its propagation
(c) Opposite to the original direction of propagation
(d) In a sine wave

Ans. (b)

2. The total work done on the particle is equal to the change in its kinetic energy

(a) Always
(b) Only if the forces acting on the body are conservative.
(c) Only if the forces acting on the body are gravitational.
(d) Only if the forces acting on the body are elastic.

Ans. (a)

3. The following unit measure energy:

(a) Kilo-watt hour.
(b) Volt*volt/sec*ohm.
(c) Pascal*foot*foot
(d) (Coulomb*coulomb)*farad

Ans. (a)

4. Astronauts in stable orbits around the earth are in a state of weightlessness because

(a) There is no gravitational force acting on them.
(b) The satellite and the air inside it have an acceleration equal to that of gravitational acceleration there.
(c) The gravitational force of the earth and the sun balance giving null resultant.
(d) There is no atmosphere at the height at which the satellites move.

Ans. (b)

5. An organ pipe, open at both ends and another organ pipe closed at one end, will resonate with each other, if their lengths are in the ratio of

(a) 1:1
(b) 1:4
(c) 2:1
(d) 1:2

Ans. (c)

6. During an isothermal expansion of an ideal gas

(a) Its internal energy increases.
(b) Its internal energy decreases.
(c) Its internal energy does not change.
(d) The work done by the gas is not equal to the quantity of heat absorbed by it.

Ans. (c)

7. A parallel plate capaciator is charged and the charging battery is then disconnected. If the plates of the capacitor are moved further apart by means of insulating handles

(a) The charge on the capacitor increases.
(b) The voltage across the plates increases.
(c) The capacitance increases.
(d) The electrostatic energy stored in the capacitor decreases.

Ans. (b)

8. Two equal negative charges q are fixed at point (0,a) and (0,-a) on the y-axis.A positive charge Q is released from rest at the point (2a,0) on the x-axis. The charge Q will

(a) Execute simple harmonic motion about the origin
(b) Move to the origin and remain at rest
(c) Move to infinity
(d) Execute oscillatory but not simple harmonic motion

Ans. (d)

9. A square conducting loop of length Lon a side carries a current I.
The magnetic field at the centre of the loop is

(a) Independant of L
(b) Proportional to L*L
(c) Inversely proportoinal to L
(d) Directly proportional to L

Ans. (c)

10. The focal length of a convex lens when placed in air and then in water will

(a) Increase in water with respect to air
(b) Increase in air with respect to water
(c) Decrease in water with respect to. air
(d) Remain the same

Ans. (a)

11. The maximum kinectic energy of the photoelectron emitted from the surface is dependant on

(a) The intensity of incident radiation
(b) The potential of the collector electrode
(c) The frequency of incident radiation
(d) The angle of incidence of radiation of the surface

Ans. (c)

12. An electron orbiting in a circular orbit around the nucleus of the atom

(a) Has a magnetic dipole moment
(b) Exerts an electric force on the nucleus equal to that on it by the nucleus
(c) Does not produce a magnetic induction at the nucleus
(d) All of the above

Ans. (d)

13. The X-rays beam coming from an X-ray tube will be:

(a) Monochromatic
(b) Having all wavelengths smaller than a certain minimum wavelength
(c) Having all wavelengths larger than a certain minimum wavelength
(d) Having all wavelengths lying between a minimum and a maximum wavelength

Ans. (c)

14. The mass number of a nucleus is

(a) Always less than its atomic number
(b) Always more than its atomic number
(c) Always equal to its atomic number
(d) Sometimes more and sometimes equal to its atomic number

Ans. (d)

15. Two successive elements belonging to the first transition series have the same number of electrons partially filling orbitals. They are

(a) V and Cr
(b) Ti and V
(c) Mn and Cr
(d) Fe and Co

Ans. (c)

16. When n+l has the same value for two or more orbitals,the new electron enters the orbital where

(a) n is maximum
(b) n is minimum
(c) l is maximum
(d) l is minimum

Ans. (b)

17. A balloon filled with ethylene is pricked with a sharp pointed needle and quickly placed in a tank full of hydrogen at the same pressure. After a while the balloon would have

(a) Shrunk
(b) Enlarged
(c) Completely collapsed
(d) Remain unchanged in size

Ans. (b)

18. Which of the following statements is not true?

(a) The ratio of the mean speed to the rms speed is independant of temperature
(b) The square of the mean speed of the molecules is equal to the mean squared speed at a certain temperature
(c) Mean kinetic energy of the gas molecules at any given temperature is independant of the mean speed
(d) None

Ans. (b)

19. Which of the following statements represent Raoult's Law

(a) Mole fraction of solvent = ratio of vapour pressure of the solution to vapour pressure of the solvent
(b) Mole fraction of solute = ratio of vapour pressure of the solution to vapour pressure of the solvent
(c) Mole fraction of solute = lowering of vapour pressure of the solution
(d) Mole fraction of solvent = lowering of vapour pressure of the solution

Ans. (a)

20. Elements having the same atomic number and the same atomic mass are known as

(a) Isotopes
(b) Isotones
(c) Isomers
(d) None of the above

21.Which is the most acidic amongst

(a) Nitrophenol
(b) O-toulene
(c) Phenol
(d) Cresol

22. Pure water does not conduct electricity because it is

(a) Almost not ionised
(b) Low boiling
(c) Neutral
(d) Readily decomposed

Ans. (a)

23. In a salt bridge, KCl is used because

(a) It is an electrolyte
(b) The transference number of K+ and Cl¯ is nearly the same
(c) It is a good conductor of electricity
(d) All of the above

Ans. (d)

24. A depolarizer used in the dry cell batteries is

(a) KCl
(b) MnO2
(c) KOH
(d) None of the above

Ans. (b)

25. The hydrolysis of alkyl halides by aqueous NaOH is best termed as

(a) Electrophylic substitution reaction
(b) Electrophylic addition reaction
(c) Nnucleophylic addition reaction
(d) Nucleophylic substitution reaction

Ans. (d)

26. The hydrocarbon that gives a red precipitate with ammoniacal cuprous chloride is (where 'º' means a triple bond)

(a) CH3-CH2-CH2-CH3
(b) CH3-CºC-CH3
(c) CH2=CH-CH=CH2
(d) CH3-CH2-CºCH

Ans. (d)

27. Which of the following reagents is neither neutral nor basic

(a) Lucas' reagent
(b) Tollen's reagent
(c) Bayer's reagent
(d) Fehling's solution

Ans. (a)

28. The substance which is most easily nitrated

(a) Toluene
(b) Bbenzene
(c) Nitrobenzene
(d) Chlorobenzene

Ans. (a)

29. Carbylamine reaction is a test for

(a) Primary amine
(b) Secondary amine
(c) Tertiary amine
(d) Quarternary ammonium salt

Ans. (a)

30. Which of the following oxides cannot be reduced by carbon to obtain metal

(a) ZnO
(b) Al2O3
(c) Fe2O3
(d) PbO

Ans. (b)

31. Which of the following is not an oxide ore?

(a) Cassiterite
(b) Siderite
(c) Pyrolusite
(d) Bauxite

Ans. (b)

32. Which among the following is called philosopher's wool

(a) Cellulose
(b) Calamine
(c) Stellite
(d) Cerussite

Ans. (c)

33. Out of 10 white, 9 black and 7 red balls, in how many ways can we select one or more balls

(a) 234
(b) 52
(c) 630
(d) 879

Ans. (d)

34. A and B throw a dice. The probability that A's throw is not greater than B's is

(a) 5/12
(b) 7/12
(c) 11/12
(d) 5/36

Ans. (b)

35. Given two numbers a and b. Let A denote the single AM between these and S denote the sum of n AMs
between them. Then S/A depends upon

(a) n
(b) n,a
(c) n,b
(d) n,a,b

Ans. (a)

36. If the sum of the roots of the equation ax²+bx+c=0 is equal to the sum of the squares of their reciprocals,
then, a/c, b/a, c/b are in

(a) AP
(b) GP
(c) HP
(d) None of the these

Ans. (c)

In the following questions ~ represents the integral sign-for eg. 1~2[f(x)] means integration of
the function f(x) over the interval 1 to2.

37. Value of -1~2[|2-x²|]dx, ie integration of the function |2-x²| over the interval -1 to 2.

(a) 0
(b) 1
(c) 2
(d) None of the above

Ans. (d)

38. If 0~P[log sinx]dx=k,then the value of 0~P/4[log(1 + tan x)]dx ,where P stands for pi,is

(a) -k/4
(b) k/4
(c) -k/8
(d) k/8

Ans. (c)

39. If a,b,c be in GP and p,q be respectively AM between a,b and b,c then

(a) 2/b=1/p+1/q
(b) 2/b=1/p-1/q
(c) 2=a/p-c/q
(d) None of the above

Ans. (a)

40. A solution of KMnO4 is reduced to MnO2 .The normality of solution is 0.6.The molarity is

(a) 1.8M
(b) 0.6M
(c) 0.1M
(d) 0.2M

Ans. (d)

The questions 41-46 are based on the following pattern.The problems below contain a question and two statements giving certain data. You have to decide whether the data given in the statements are sufficient for answering the questions.The correct answer is

(A) If statement (I) alone is sufficient but statement (II) alone is not sufficient.
(B) If statement(II) alone is sufficient but statement(I) alone is not sufficient.
(C) If both statements together are sufficient but neither of statements alone is sufficient.
(D) If both together are not sufficient.

41. What is John's age?

(I) In 15 years John will be twice as old as Dias would be
(II) Dias was born 5 years ago

Ans. (C)

42. What is the distance from city A to city C in kms?

(I) City A is 90 kms from City B
(II) City B is 30 kms from City C

Ans. (D)

43.Is A=C ? A,B,C are real numbers

(I) A-B=B-C
(II) A-2C = C-2B

Ans. (C)

44. What is the 30th term of a given sequence ?

(I) The first two terms of the sequence are 1,1/2
(II) The common difference is -1/2

Ans. (A)

45.Was Avinash early, on time or late for work?

(I) He thought his watch was 10 minutes fast
(II) Actually his watch was 5 minutes slow

Ans. (D)

46. What is the value of A if A is an integer?

(I) A⁴= 1
(II) A³ + 1 = 0

Ans. (B)

47. A person travels 12 km in the southward direction and then travels 5km to the right and then travels 15km toward the right and finally travels 5km towards the east, how far is he from his starting place?

(a) 5.5 kms
(b) 3 km
(c) 13 km
(d) 6.4 km

Ans. (b)

48. X's father's wife's father's granddaughter uncle will be related to X as

(a) Son
(b) Nephew
(c) Uncle
(d) Grandfather

Ans. (c)

49. Find the next number in the series 1, 3 ,7 ,13 ,21 ,31

(a) 43
(b) 33
(c) 41
(d) 45

Ans. (a)

50. If in a certain code "RANGE" is coded as 12345 and "RANDOM" is coded as 123678. Then the code for the word "MANGO" would be

(a) 82357
(b) 89343
(c) 84629
(d) 82347

Ans. (d)

51. If "PROMPT" is coded as QSPLOS ,then "PLAYER" should be

(a) QMBZFS
(b) QWMFDW
(c) QUREXM
(d) URESTI

Ans. (a)

The questions 52-53 are based on the following data

6 people A,B,C,D,E and F sit around a table for dinner.Since A does not like C, he doesn't sit either opposite or beside C.B and F always like to sit opposite each other.

52. If A is beside F then who is are the two neighbours of B?

(a) D and C
(b) E and C
(c) D and E
(d) Either (a) or (b)

Ans. (c)

53. If D is adjacent to F then who is adjacent to C?

(a) E and B
(b) D and A
(c) D and B
(d) either (a) or (c)

Ans.(d)

54. Complete the sequence A, E ,I ,M ,Q ,U , _ , _

(a) B, F
(b) Y, C
(c) G, I
(d) K, O

Ans.(b)

55. A person travels 6km towards west, then travels 5km towards north ,then finally travels 6km towards west. Where is he with respect to his starting position?

(a) 13km east
(b) 13km northeast
(c) 13km northwest
(d) 13km west

Ans. (c)

56. If A speaks the truth 80% of the times, B speaks the truth 60% of the times. What is the probability that they tell the truth at the same time

(a) 0.8
(b) 0.48
(c) 0.6
(d) 0.14

Ans.(b)

57. If the time quantum is too large, Round Robin scheduling degenerates to

(a) Shortest Job First Scheduling
(b) Multilevel Queue Scheduling
(c) FCFS
(d) None of the above

Ans. (c)

58. Transponders are used for which of the following purposes

(a) Uplinking
(b) Downlinking
(c) Both (a) and (b)
(d) None of the above

Ans. (c)

59. The format specifier "-%d" is used for which purpose in C

(a) Left justifying a string
(b) Right justifying a string
(c)Left justifying an intger
(d) Right justifying an intger

Ans. (c)