Tata Elxsi

Company profile:
Tata Elxsi Limited (BSE: 500408, NSE: TATAELXSI) is a technology company of the Tata Group in India with a distinct focus on design. It delivers outsourced product design and R&D services and solutions to customers worldwide, while also providing solutions through four core practices: product design services, design and engineering, system integration services, and visual computing labs. The company has a team of more than 3600 engineers and designers. It is headquartered in Bangalore

Placement Pattern:
General test
Interview

General Test :
Two separate tests:

1. Technical (30 questions-30 minutes) - Separate questions for CS and EC.
Technical will be conducted first, followed by Analytical.
No Negative marking.
No Separate Question Booklets.
Everybody had the same one -Technical test (for computer science) consisted MAINLY 'C' .
2. Analytical (30 questions-20 minutes)
Questions from
Numbers/Simplification/Problems
Ages/Profit and Loss/
Ratio & Proportion/
Time & Work/Pipes & Cisterns/
Time & Distance/Problems on Trains
Problems on Boats & Streams
Area/Volume & Surface Area
Calendar/Clocks.

Technical Sample Paper

1) Graphics:- Painters algorithm is used for...........

2) Graphics:-Why is 'Lighting' operations done on World Coordinates?

3) A structure was given and it contained normal data as well as some bit-wise data. You had to find the total size taken up by the structure

4) Questions on C External Variables.

5) How can you call a function written in FORTRAN from a C program

6) Normal question on pointer addition

7) Another question on linked list

8) A question on 64 bit OS's and Virtual Memory

9) UNIX question on 'who' output and then doing some other operation and then asking you whats the output.

10) UNIX question on 'awd' operation.

11) A big code with lots of pointers. There was a struct which contained 2 arrays. Then an array of that structure was declared. The code used these structures and you had to find the values of a variable 'j' at various points inside the code.

12) A code which had some declarations of some data items. There were a couple of normal data items(char,int..) and some pointers as well and a malloc call. You have to find the total memory taken up in the stack (Hint: Pointers and all are allocated in heap, not in stack, so dont count them).Also in most of these questions, they were specifying that the OS was 32 bit.

13) A question on nesting of pointers. There was this pointer to a function which returned an array of char pointers.....You had to give the exact definition of the function

14) Value of 2 particular variables in C (MAXINT and some other constant)

15) What do you need to do to open more than 10 files simultaneously in Microsoft Operating System?

16) A question on Macro( consisted of something like CTRL&037)

17) Question on Macro expansion


Analytical Sample Paper

1) 101^100 -1 is divisible by.....

2) Question on boat (stream velocity given...)

3) Train Question ( Goods and Passenger train.. their speeds given..)

4) Pipe question (with leak at the bottom..)

5) Salary & Proportion problem

6) Another problem on Salary & Proportion

7) Age question-father and son

8) Another age question

9)Question on ratio (Sachin: Saurav= Saurav:Rahul=3:2....together they scored some runs,you had to find the runs scored by Sachin)

10) Angle between hands when time is 2:20

11) x^2 + 4 y^2 =4xy.Find x:y

12) A question on Arithmetic Progression (something like 5 times the 5th term is 8 times the 8th term. find 12th term...)

13) A and B's work units given. They were together given Rs.720.When C joined, they together completed the work in 5 days. Find C's wages

14) There was a circle. A square of max size was cut from it. From this square, a circle of max size was cut. What was the ratio of this final size w.r.t initial size?

15) A runs 3/4th faster than B. One of them was placed some metres ahead. How far should the finishing post be placed so that both of them finish at the same time?

16) Longest time one has to wait for next birthday?(366/365/4 years/8years)

17) Next no: in the sequence: 7,11,__,19,23

18) Some question on steps...it was 10 ft high...an ant travelled upwards .and total time taken ?

19) Cricket-some data on run-rate of the opposition being 15%....

20) Time & Distance: somebody was traveling along the circumference....

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MINDTREE CONSULTING LTD
-------------------------

Company profile
---------------------

MindTree Consulting Limited is an international IT consulting company that was started in 1999 by 10 industry professionals who came from Cambridge Technology Partners, Lucent Technologies and Wipro. Currently co-headquartered in Warren, New Jersey and Bangalore, India, it has 3 development centers in India and 15 offices spread across Asia, Europe and the United States. The founding team was led by Ashok Soota, who was at that time vice chairman and president of Wipro.
MindTree crossed USD 100 million in revenues in April 2006; the fastest Indian IT company to achieve the target. MindTree is also the world's youngest company to be assessed at both CMMi and P-CMM.
MindTree has been involved in the creation of Bluetooth technology and is an Associate Member of the Bluetooth Special Interest Group . Their Bluetooth protocol stack is licenced to NEC

MindTree Placement Papers and Sample Papers

1. What is not common among threads in a process.?
Code,
stack,
heap,
libraries,
none of the above

2. Process address space includes which of the following components?
Memory heap,
user stack ,
shared libraries,
all of the above

3. Some file transfer is in progress. The connection break s and then
later after some time is restored. then on the file transfer continues
from the point where it left off, which OSI layer handles this?
Presentation,
application,
TCP, IP,
Session

4. Sliding window protocol is best for
Transmission,
reception ,
error and flow control,
Duplication
detection, all

5. FTP works at which layer?
Presentation ,
application,
IP,
Data link,
none

6. Size of '0', "0", '\0',0(stored as an int)?
1,2,1,4;
2,8,1,2;
1,1,1,1;
2,2,0,4;
none

7. Virtual memory depends on
Address Lines,
Data bus,
disk space ,
all , none

8. Which of the following is the fastest IPC mechanism???
Pipes,
FIFO, Semaphores, Shared memories, None

9. Which of the followiun is the fastest IPC mechanism???
Pipes,
FIFO,
Semaphores,
Shared Message queues,
None

10. Semaphores are used for (Synchronisation among)
a. processes
b. threads.
c. Interrupt handlers
d. One more choice

11. if(n & (n-1))
return false;
else
return true;

what does the code snippet above do???
a. check if the no is divisible by 2
b. check if the no is not Divisible by 2
c. check if no is a multiple of 2
d. check if the no is a power of 2
e. none


12. Interrupt latency ==
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MindTree Placement Paper Conducted On 19-Sep-2003
-----------------------------------------------------------------------------


45 quesitons and 60 mins.
Every wrong answer carried -1 marking and every right question carried +3 marking.

1. A person losses and gains 10% on selling a object for 20

2. Sum of 1 to 100 is divisible by 1. 1,2,4,8 2. 2 & 4 3. 2 4 none

3. 10 consonants and 4 vowels , how many words with 3 consonants and 2 vowels?
1) 720
2)7200 ... complete series

4. How many numbers start and end with 2 b/w 100 and 300?

5. If a sphere of diameter 3 cm is melted & formed into 3 spheres , the diameter of 1st is 1.5cm and that of second is 2.0 cm , what is the diameter of the third?

6. There are 4 novels like thriller , mystery , romance , fiction written by ,a,b,c,d not necessarily in the same order and published by e , f , g , h, not necessarily in the same order...and questions on this

7.. 6 people compete in a race a,b,c,d,e,f b is not in the 1st place there are 2 runners b/w d and e a is ahead of d ( one more condition ) and 2 quesitions
8. If prizes are increased by 25% , by how much should I reduce the consumption to keep the expenditure same??

13. How many factors divide 6400
1)24 ,
2) 25
3)32.

14. "COURTESY" - how many words can be constructed with C in the beginning and Y at the end

15. My mother's husband's father in laws son's child,what is the relation?

16. 3 glasses containing mixture of water and alcohol in ratio 2:3 , 3:4 , 5:9 when all 3 are mixed what is the new ratio?

GD topics.

1. If both husband and wife are working in the same organisation.
2. Co-ordination between educational institutions and companies.
3. Linux Vs Microsoft . Which will perish?.

Programming question

We have to write program(This program will be evaluated if you are qualified for Interview).you will be given choice(ie write one out of two given) both the programs are on files

1. We have to count the 3 letter,4 letter and 5letter words from a file and print the number of 3 letter,4letter and 5letter words. Delimiter is space,tab,hifen.Also we should not consider the line in the file after we encounter # in that line.(ie after # we should not consider the portion of line)

2. In file count the number of characters, number of words, number of line. Delimiter between words is given as command line argument. 1hour 15 min is given for the test. we have to answer both apptitue and program with in this time. some of the apptitue questions.

1. The is a meeting organized, every person shake hands with the other only once .If there are 60 shake hands, how many persons are there in the meeting?.

2. A father has 8 children ,he takes 3 at a time to a zoo.
What is the Probability of a child going to the zoo?

3. A father has six children .all the children are born at regular intervals. If the sum of their ages of all the children and father is 186. Calculate the age of the elder son, when the younger sons age is 3.

4. Count the numbers between 100 and 300, that starts with 2 and ends with 2.

5. Some reasoning questions

1. There are six steps,5 people a,b,c,d,e .
Conditions are , a is two steps below c,no two people are on same step, b is next to d. 4 Questions based on this 2. 5 people participating in the race .conditions are given about the positions.

6. A ball is dropped from a height of 10 feet. Every time it rebounces to half of the height. how many feet it traveled ?

7. There are 3 jars. The ratio of spirit to water in each of these jars is 3:2,4:5,5:7. the three jars are mixed into a single jar. What is the ration of spirit to water in single jar.

8. What is the relation with your mother's sister's brother's wife's child with you.?

9. What is the relation with your mother's husband's father-in-law's son's child with you?

10. Number series, alphabet series questions .

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Bharat Sanchar Nigam Limited-BSNL

Company profile
------------------------

Bharat Sanchar Nigam Limited (known as BSNL, India Communications Corporation Limited) is a public sector communications company in India. It is the India's largest telecommunication company with 25.14% market share as on December 31, 2007. Its headquarters are at Bharat Sanchar Bhawan, Harish Chandra Mathur Lane, Janpath, New Delhi. It has the status of Mini-ratna - a status assigned to reputed Public Sector companies in India.


BSNL –JTO Recruitment Exam
-----------------------------------------
Written Test duration (3 hours)

Sectional papers will be conducted:
A. Engineering Stream Paper - I
B. Engineering Stream Paper - II
C. General Ability Test Paper - III

1. The standard of paper in Engineering subjects will be that of Engineering Degree Examination of an Indian University.

2. In the general ability test, special attention will be paid to assess the candidate’s capacity for general awareness. The standard of paper in general ability test will be such as may be expected of an Engineering Graduate.

BSNL –JTO SAMPLE PAPER-1
--------------------------------------
1. Of the following bridges the one which can be used for the measurement of dielectric loss of a capacitor is –
a.) Schering bridge
b) Heaviside campbell equal ratio voltage
c) Owen bridge
d) Anderson bridge

2. LVDT is uses as a –
a). Displacement transducer
b) Pressure transducer
c) Temperature
d.) Any of the above

3. Polarization is a measure of -
a.) Dielectric constant per unit volume.
b.)Voltage gradient to produce electrical breakdown
c.) Product of charge and distance
d.)Excess charge density

4. Compared to the inductive type of transducer, capacitive transducer is superior for the measurement of displacement because of -
a.)Absence of non-linearity
b.) High frequency response
c.) Small size
d.) High accuracy

5. An incremental model of a solid state device is one which represents the –
a.) ac property of the device at the desired operating point
b) dc property of the device at all operating points
c) Complete ac and dc behaviour of the device at all operating points
d)ac property of the device at all operating points.

6. The ac resistance of a forward biased p-n junction diode operating at a bias voltage 'V' and carrying current ‘I’ is –
a ) Zero
b) a constant value independent of Vand I
c) very high
d.) none of the above

7. A meter is shielded with a soft iron to –
a) Prevent damage from rough use
b) Keep moisture out of movement
c) Protect meter movement from stray magnetic fields
d) Achieve all of the above

8. A capacitor that has been connected across a battery for comparatively long time becomes–
a) Charged
b) Discharged
c) Short - circuited
d) Defective

9. The charge on the plates of a capacitor is given by the expression –
a.) Q = VI
b.) Q = IR
c.) Q = CV
d.) Q = IC

10. Silicon steel used for electrical purposes has silicon percentage of –
a.) 0.5
b.) 2.5
c.) 3.4
d). None

11. The feature of VTM is its –
a.) Low input impedance
b.) Low power consumbtion
c.) The ability to measure wider ranges of voltage and resistances
d) None

12. In an N-type semiconductor, the position of the fermi level –
a.) Is lower than the centre of the energy gap
b.) Is at the centre of the energy gap
c.) Is higher than the centre of the energy gap
d.) Can be anywhere depending upon the doping concentration

13. A JFET can operate in –
a.) depletion and enhancement model
b.) depletion mode only
c.) enhancement mode only
d.) neither enhancement nor depletion mode

14. Consider the following semiconductor diodes –
a.) Germanium diode
b.) Silicon diode
c.) Tunnel diode
d.) Schottky diode

15. A diode with a PIV of 50V is likely to break down when rectifying 50v ac supply because –
a.) it is made of defective material
b.) it is incorrectly connected to the supply
c.) peak value of ac supply exceeds the PIV value
d.) ac supply is of extremely high frequency.

16. The set of transistor characteristics that enables a to be determined directly from the slope is –
a.) CE transfer characteristics
b.) CE output characteristics
c.) CB transfer characteristics
d.) CB input characteristics

17. For an N-channel JFET, the drain voltage has to be –
a.) positive with respect to the source
b.) negative with respect to the source
c.) uncharged with respect to the source
d.) none

18. The SCR is often employed as a –
a.) Source-controlled switch
b.) Drain-controlled switch
c.) Gate-controlled switch
d ) None

19. An oscilloscope has an input impedance consisting of 1MW and 20pF in parallel. A high impedance probe connected to the input of this oscilloscope has a 10MW series resistance, this 10MW resistance –
a.) Need not be shunted
b.) Should be shunted by a 2pF capacitor
c.) Should be shunted by a 20pF capacitor
d.) Should be shunted by a 200pF capacitor

20. Compared to silicon, gallium arsenide (GaAs) has –
a.) Easier to grow crystals since the vapour- pressure of arsenic is high
b.) Higher optoelectronic conversion efficiency
c.) Both a and b
d). None

21. When the network shown in the fig draw a current I and if the ends ab are shorted, the current drawn would be –
a.) I
b.) I\ 4
c.) 4 I
d.) 2 I

22. When all the resistances in the circuit are of one ohm each, then the equivalent resistance across the points A and B will be –
a.) 1W
b.) 0.5W
c.) 2W
d )1.5W

23. Of the following periodic waveforms the one having only odd harmonics of sinusoidal waveform is-
a.) 1 and 2
b.) 1 and 3
c.) 1 and 4
d.) 2 and 4

24. When in the network shown in the given fig, the switch K is dosed at t = 0 with the capacitor uncharged then the value for at t = 0+ will be –
a.) 100 amp./sec.
b.) –100 amp./sec.
c.) 1000 amp./sec.
d.) –1000 amp./sec.

25. For the circuit shown in the given figure, the voltage VAB is –
a.) 6V
b.) 10V
c.) 25V
d.) 40V

26. In the network shown in the given fig. current i = 0 when E = 4V, I = 2A and I = 1A when E = 8V, I = 2A. The Thevenin voltage and the resistance into the terminals AB are –
a.) 4V, 2W
b.) 4V, 4W
c.) 8V, 2W
d.) 8V, 4W

27. The effective resistance between the terminals A and B in the circuit shown in the fig. is –
R
a.) R
b.) R-1
c.) R/2
d.) 6/11 R

28. When in a two terminal network, the open circuit voltage measured at the given terminals by an electronic voltmeter is 100V and a short circuit current measured at the same terminals by an ammeter of negligible resistance is 5A then if a resistor of 80W is connected at the same terminal, then the current in the load resistor will be –
a. 1A
b.) 1.25A
c). 6A
d. 6.25A

29. The electric potential due to an electric dipole of length L at point distance r away from it will be doubled if the -
a.) Length L of the dipole is doubled
b ) r is doubled
c) r is halved
d ) L is halved

30. When a particular mode is excited in a waveguide there appears an extra electric component in the direction of propagation . The resulting mode is
a. ) Longitudinal electric
b. ) Transverse electromagnetic
c. ) Transverse magnetic
d ). Transverse electric

31. When for a transmission line the open circuit and short circuit impedance are 20W and 5 W respectively then the characteristic impedance of the line is -
a. ) 100 Ohms
b ). 50 Ohms
c. ) 25 Ohms
d. ) 10 Ohms

32. In an ideal transmission line with matched load, the voltage standing wave ratio and reflection coefficient are respectively -
a. ) 1 and 1
b ). infinity and 1
c ) infinity and 0
d.) 1 and 0

33. When an electric charge of 100 coulombs is enclosed in sphere of radius 100 m then the electric displacement density ( in coulomb / m2) D is –
a. ) 0.0833
b ). 0.833
c. ) 1.666
d. ) 10

34. For the dominant mode in a rectangular wavelength with breadth 10 cm, the guide wavelength for a signal of 2.5 GHz will be -
a. ) 12 cm
b. ) 15 cm
c. ) 18 cm
d. ) 20 cm

35. When the phase velocity of an electromagnetic waves depends on frequency in any medium, the phenomenon is called-
a. ) Scattering
b. ) Polarization
c. ) Absorption
d. ) Dispersion

36.Antennas commonly used for microwave links are -
a. ) Loop antenna
b. ) Log-periodic antennas
c. ) Paraboloidal dishes
d ). Rhombic antennas

37. One of the following instrument which may be used to measure the optical activity of compounds is –
a. ) Infrared spectrometer
b. ) Atomic absorption spectrometer
c. ) Polarimeter
d. ) Flouroscope

38. Schering bridge measures –
a. ) Capacitance dielectric loss
b. ) Inductance
c. ) Resistance
d. ) Mutual inductance

39. When a square wave is fed to an RC circuit, then –
a. ) voltage across R is square and across C is not square
b. ) voltage across C is not square and across R is not square
c. ) voltage across both R and C are square
d. ) voltage across both R and C are not square

40. The time constant of the RC circuit is –
a. ) less than the time period of the input square wave.
b ). much larger than the time period of the input square wave.
c.) equal to the time period of the input square wave.
d ). none

41. Harmonic distortion for each frequency can be obtained by harmonic analyser of the –
a. ) heterodyne type
b. ) tuned circuit type
c. ) fundamental suppression type`
d. ) bridge circuit type.

42. A three phase wattmeter requires –
a ). only two current coils and two pressure coils
b.) only one current coil and two pressure coil
c. ) only two current coils and one pressure coil
d. ) only current coil

43. A low pass filter circuit is basically –
a. ) a differentiating circuit with low time constant
b. ) a differentiating circuit with large time constant.
c. ) an integrating circuit with low time constant.
d. ) an integrating circuit with large time constant.

44. If the differential pressure in restriction type flow measuring devices is then the flow will be proportional to –

45. When a system is represented by the transfer function then the dc gain of this system is –
a.) 1
b.) 2
c.) 5
d.) 10

46. Silicon based semiconductor device called thyristor was first fabricated by –
a). Jell laboratories in U.S.A
b). Maxwell laboratories in U.S.A
c.) Bell laboratories in U.S.A
d). GEC laboratories in U.S.A

47. A semiconductor based temperature transducer has a temperature coefficient of –2500mV/0C. This transducer is indeed a –
a.) Thermistor
b.) Forward biased pn junction diode
c.)Reverse biased pn junction diode
d.) FET

49. Which of the followings pairs of Telemetry situations and Modulation techniques and conditions is correctly matched-
a.) Pulse amplitude modulation Low amplitude signals
b.) Pulse position modulation For short distance when power is enough
c.) Pulse width modulation Power to be spent in telemetry is required to be low
d.) Pulse code modulation, minimization of interference effects.

50. The SCR ratings di/dt in A/m sec and dv/dt in n/m sec, may vary, respectively between-
a.) 20 to 500, 10 to 100
b.) both 20 to 500
c.) both 10 to 100
d.) 50 to 300, 20 to 500

51. Match the given controlled rectifiers with 50 Hz supply
a.)1 phase full converter with source inductance
b.)3 phase full converter
c.)3 phase semiconductor
d.)3 phase halls wave converter

52. For natural or forced commutation the cyclo converters (CCs) requires as under.
a) natural commutation in both step up and step down CCs
b.) forced commutation in both step up and step down CCs
c.) forced commutation in step up CCs
d). forced commutation in step down CCs

53. The peak inverse voltage in ac to dc converter system is highest in-
a). single phase full wave mid point converter
b). single phase full converter
c) 3 phase bridge converter
d). 3 phase half wave converter.


54. A single phase full converter feeds power to RLE load with R = 6 W L = 6 MH and E = 60 V. The ac source voltage is 230 V, 50 Hz, For continuous conduction, the average value of load current for a firing angle delay of 50 is
a.) 12.181 A
b). 14.81 A
c). 16.76 A
d.) 32.40 A

55. What is 2’s complement of 00011100-
a.) 11100011
b.) 10001100
c.) 11100100
d.) 10000111

56. In C programming a expression contains relational operators, assignment operators and arithmetic operators if parentheses is absent then execution follows
a.) assignment, relational, arithmatic
b.) arithmatic, relational, assignment
c.) relational, arithmatic, assignment
d.) assignment, arithmatic, relational

57. In semiconductor memory information stored in form-
a.) binary
b.) hexadecimal
c.) octal
d.) ASCII

58. I\p to Not gate gives o/p as-
a ) inversion of some bits
b.) 2’s complement of i\p
c.) 1’s complement of i\p
d.) o/p is some as i\p

59. A negative logic means-
a ) logic 0 and 1 are represented by a +ve voltage respective
b). logic 0 and 1 are presented as –ve and +ve voltage
c.) logic 0 voltage is higher than logic 1 voltage level
d.) logic 0 voltage is lower than logic 1 voltage level

60. For designing D flip flop from SR FF a circuit is aloud at 01p of SR FF is-
a.) AND
b.) OR
c.) NOR
d.) NOT

61.A 20,000 Ohms per volt meter will deflect full-scale with a current of -
a.) 50 mA
b.) 50 mA
c.) 100 mA
d.) 1000 mA

62. A plate modulated class –CRF power amplifier produces 100 KW of radiated power at 100 % modulation. The modulating audio amplifier supplies approximately -------- kW of this power-
a.) 50
b) 33
c) 22
d) 11

63. An amplifier without feedback has a distortion of 15 % and gain of 40. When 10% negative feedback is applied the distortion will become-
a.) 50 %
b) -45 %
c) 3%
d) -5%

64. MODEM implies-
a.) Modulator at transmitting side and ditector at the receiving side
b.) Which deals with analog signals and shows digital information
c.) Analog to digital at transmitting side and digital to analog at a receiving side
d) A device which deals with digital signals only

65. Twisted ring and ring counters are examples of –
a.) Synchronous counters
b.) Asynchronous counters
c.) both a and b
d.) None of the above

66. Specify Non characteristic flip flop in the following –
a.) The outputs are complement of each other
b.) The flip flop has two input signals
c.) The flip flop has two output signals
d). The flip flop is a bistable devise with only two stable states

67. The voltage obtained when digital input is 001 is a 3 bit R-2R ladder DIA converter is-
a.) VR/22
b.) VR/21
c.) VR/23
d.) none of the above

68. Identify NOT an octal number-
a.) 19
b). 15
c.) 77
d.) 101

69. The set of binary digits 01000100 represents-
a.) number 6810 in a pure binary computer
b.) number 44 in 8421 BCD code
c) Both a and b
d.) None of the above

70. The system matrix of a continuous time system, described in the state variable form is
The system is stable for all values of x and y satisfying –
a.) x < 1/2, y < 1/2
b). x < 0, y < 2
c.) x > 1/2, y >0
d.) x < 0, y < 1/2

71. The break away and break in point in the root locus for open loop transfer function G(S) H(S) = are located respectively at –
a). –2 and -1
b). –2.47 and –3.77
c.) –4.27 and –7.73
d.) –7.73 and –4.27

72. The overall transfer function in a second order is given by-
Its resonant frequency is -

73. The detection of an AM waveform in an Envelope –
a.) One side band and full amplitude carrier are needed
b.) Both side bands and full amplitude carrier are needed
c) Only two side bands are needed
d). Upper side band and part of carriers are needed

74. Satellite used for intercontinental communication is known as –
a.) Comsat
b.) Dom sat
c.) Mari sat
d). Intelsat

75. Mark out non submarine cable –
a.) TAT – 7
b.) INTELSAT V
c.) ATLANTIS
d.) CANTAT 2

76. The capacity of an analog communication channel with 4kHz bandwidth and 15 dB SNR is approximately-
a). 20,000 bps
b). 16,000 bps
c.) 10,000 bps
d.) 8,000 bps

77. The blind speed of an MTl radar can be avoided by changing the-
a.) Carrier frequency
b.) Pulse repetition frequency
c.) Antenna rotation rate
d.) Transmitted power

78. The output voltage in a feedback series regulator circuit is regulated by controlling the-
a.) Magnitude of the input voltage
b.) Gain of the feedback transistor
c.) Reference voltage
d.) Voltage drop across the series pass transistor

79. Indicate the signal not transmitted in colour TV-
a.) Y
b.) Q
c.) R
d.) I

80. As frequency of signal increases-
a.) Directivity increases & beam width increases
b.) Directivity & beam width decreases
c.) Directivity increases & beam width decreases
d.) Directivity decreases & beam width increases

81. The number of hardware interrupts (which require an external signal to interrupt) present in on 8085 mP are
a). 1
b). 4
c.) 5
d.) 13

82. Highest priority interrupt is-
a.) INTR
b.) RST 7.5
c.) RST 6.5
d.) TRAP

83. One instruction cycle means-
a.)Time require to execute set of instructions
b.)Time require to execute one instruction
c.) Time require to complete one operation of accessing memory, or I/o
d.) None of above

84. If the clock freq. is 5 mH3 how much time is required to execute on instruction of 18 T-states-
a.)3.6 msec.
b.) 36 msec.
c.) 36 msec.
d.) 36 sec.

85. In data transfer operation which flog get affected-
a. ) zero flog
b. ) carry flog
c. ) sign flog.
d.) none

86. CMP instruction comes under group -
a.) Data transfer
b.) Brouching operations
c). Machine control operation
d.) logical operations

87. The logic operation-
a).can be performed directly with content of the register.
b.) are performed without content of a
c.)none of above.

88. What happen when PUSH instruction executed -
a.) data retrieved from stock to register
b.) data from register saved on the stock.
c.) 16 bit address of instruction saved on stock.
d.) 16 bit address from stock retrieved

89. SIM stands for-
a.) serial interface memory
b.) set interrupt mask
c.) set if minus
d.) set internal memory

90. Maximum clock frequency required to operate 8085-
a.) 2 MHz
b.) 3 MHz
c) 6 MHz
d.) 9 MHz

91. ASCII code is-
a). 7 bit
b). 8 bit
c)16 bit
d.) 32 bit.

92. In memory mapped I/O address lines are-
a.) 8
b) 16
c) 32
d) 64

93. The parity bit adding technique is used for -
a.) Indexing
b.) Coding
c.) Error detection
d.) Controlling

94. A demultiplexer-
a.) has multiple i/p and single o/p
b.) has single i/p and multiple o/p
c.) has multiple i/p and multiple o/p
d.) has single i/p and single o/p


95. Subroutines are useful-
a) to reduce storage requirements
b) to increase programming speed and reduce storage
c) most applications are same
d.) but increases expense

96. As daring goes with temerity same way clear-sighted with –
a.) Perspicacity
b.) Impulsiveness
c.) Energy
d.) Clemency

97. A man who visits his friend is a –
a.) Host
b.) Guest
c.) Master
d.) Owner

98. Zealot is –
a)beginner
b) Patron
c.) fanatic
d.) Murderer

99.ive the plural of ‘Mouse’ –
a.) Mouse’s
b). Mice
c). Mouse
d). None

100Find the part of speech of the underlined word –
Shama and Radha were playing together.
a.) reposition.
b.) Noun
c.) Conjunction.
d) Verb.

101. Which of the following is not one of the multiple names of ganesha?
a). Vinayaka
b). Lambodra
c.) Ekadanta
d.) Vighneshwara
e. ) all of the above

102. If a man weighs 60 Kilograms on earth, how much will be his weight on the moon?
a. ) 50 kg
b. ) 40 kg
c. ) 20 kg
d. ) 10 kg

103. The Indian star not selected for waxing at the famous Madame Tussaud’s wax is-
a. ) Salman Khan
b. ) Amitabh Bachan
c. ) ShahRukh Khan.
d. ) Raj Kapoor

104 Rate of growth of per capita income in India drops down to – percent in 2000-2001-.
a. )5.3 percent
b. )3.5 percent
c. )4.8 percent
d. )8.4 percent

105. Ascorbic acid is the chemical name of-
a.)Vitamin A
b.)Vitamin B
c.)Vitamin C
d.) Vitamin D

106. All India Muslim League was founded by-
a.) Nawab Slimullah Khan
b.) Sir Mohd Iqubal
c.) Sir syed Ahmed Khan
d.) Moulana Shaukat Ali

106. Red Blood corpuscles are formed in-
a.)Marrow
b) Kidney
c) Liver
d) Heart

107. The southern most tip of India is in-
a.) Lakshadweeep
b.) Kanya Kumari
c ) Andaman and Nicobar Islands
d.) Rameswaram

108 The first bowler in cricket history to take 500 test wickets is-
a.) Imran Khan
b).Courtney Walsh
c). Shane Warne
d.) Muttiah Murlidharan

109. President of the National Consumer Disputes Redressal Commission (NCDRC) is-
a.) Mr. D.C Wadhwa
b). Mr. A. P Wadhwa
c.) Mr. A. C Wadhwa
d.) Mr. D. P Wadhwa

110. C.V. Raman got Nobel Prize for-
a.) Thermodynamics
b.) Quantum theory
c.)Optics and spectroscopy
d.) Nuclear Physics

111. First governor general of Bengal-
a). Lord Clive
b.) Lord Warren Hastings
c.) Lord Lytton
d.) Lord Ripon

112. The slogan “Do or Die” is associated with-
a.) Subhash Chandra Bose
b.) Gandhiji
c.) Harijan
d.) Satyagraha

113. Champaran is in the state of-
a). Gujarat
b). Maharashtra
c.) Bihar
d). Madhya Pradesh

114. These tribes are found in central Asia-
a.) Garos
b) Kirghiz
c.) Lushai
d). Santhals

115.Join these sentences meaningfully by choosing the correct alternative from the following :
You can buy a book. You can read it.
a) and
b) nor
c) either
d) neither
116. What is the opposite of Asperity –
a) gentility
b) superiority
c) kindness
d) clarity

116. The Election Commission functions under-
a) Ministry of Home Affairs
b) Ministry of Law
c) Prime Minister's Secretariat
d) None of these

117. Article 352 of Indian Constitution needs to be revoked in case-
a) President's Rule is to be imposed
b) Emergency is declared
c) Services of a Government servant are to be terminated without any enquiry
d) A political party of national level is to be banned

118. Radio-activity was first discovered by-
a) Becquerel
b) Madam Curie
c) Rutherford
d) Jenner

119. Ninth Plan in India ranges from-
a) 1995-2000
b) 1996-2001
c) 1997-2002
d) 1998-2003

120. How much electricity does India propose to generate through nuclear power by the year 2000 AD?
a) 5,000 MW
b) 10,000 MW
c) 15,000 MW
d) 20,000 MW

121. In which year did the fall of Bastille take place?
a) 1769
b) 1789
c) 1889
d) 1869

122. How may countries are non-permanent members of the Security Council?
a) 6
b) 7
c) 9
d) 10

123. The International Date Line is represented by-
a) 1000 meridian
b) 2000 meridian
c) 1800 meridian
d) 900 meridian

124. India's first satellite was launched from-
a) Sriharikota
b) Cape Kennedy
c) Bangalore
d) A Soviet cosmodrome

125. Name the author of the famous book "Politics"-
a) Aristotle
b) Socrates
c) Plato
d) None of them

126. "Guernica" is Picasso's painting on-
a) The Spanish Civil War
b) The American Civil War
c) The French Revolution
d) The Russian Revolution

127. The object of the Supreme Court's Keshvanand Bharati ruling is -
a) To put a limit on Parliament's amendatory powers
b) To give unlimited powers to Parliament to amend the Constitution
c) To give precedence to Directive Principles over Fundamental Rights
d) None of these

128. Which country in July '99 officially announced mastering of indigenously developed neutron bomb technology?
a) N. Korea
b) France
c) India
d) China

129. Shifting cultivation is commonly used in which of the following states?
a) Tamil Nadu
b) Maharashtra
c) Jammu and Kashmir
d) Nagaland

BSNL JTO Sample Paper -2
--------------------------------------------


1.For a transmission line, the propogation constant, for a TEM wave travelling in it is given by (Where the symbols have the usual meanings ) -
a) [ (R+jwL) (G+jwc)]
b) [ R+jwL) (G+jwc)] ½
c) [ (R-jwL) (G + jwc) ] ½
d) [(R-jwL) ( G+jw2c)]1/3

2.The advantages of wave guides over co-axial lines would include which of the following features-
1. Easier to use
2. lower power losses
3. Higher operating frequencies possible
a) 1 and 2
b) 1 and 3
c) 2 and 3
d) 1, 2 and 3

3.When a 75 ohm transmission line is to be terminated in two resistive loads R1 and R2 such that the standing pattern in the two cases have the same SWR , then the values of R1 and R2 (in ohms) should be -
a) 250 and 200 respectively
b) 225 and 25 respectively
c) 100 and 150 respectively
d) 50 and 125 respectively

4.The degenerate modes in a wave guide are characterized by -
a) Same cut off frequencies but different field distribution
b) Same cut off frequencies and same field distributions
c) Different cut off frequencies but same field distributions
d) Different cut off frequencies and different field distributions

5.A TEM wave impinges obliquely on a dielectric-dielectric boundary with Er1=2 and Er2=1, the angle of incidence for total reflection is -
a) 30 0
b) 60 0
c) 45 0
d) 90 0

6.The radiation pattern of Hertzian dipole in the plane perpendicular to the dipole is a -
a) Null
b) Circle
c) Figure of eight
d) None of the above

7. Permeance is the -
a) square of reluctance
b) reluctance
c) reciprocal of the reluctance
d) cube of the reluctance.

8.One of the following which is an active transducer is -
a) Photoelectric
b) Photovoltaic
c) Photo-conductive
d) Photo emission

9.The wein bridge uses only -
a) Inductors
b) Capacitors
c) Resistors
d) Capacitors and Resistors.

10.The greater the value of Q -
a) higher will be the bandwidth of the resonant circuit.
b) smaller will be the bandwidth of the resonant circuit.
c) nothing can be said)
d) none.

11.The most serious source of error in a) c) bridge measurement is -
a) eddy currents
b) leakage currents
c) residual imperfectness
d) stray fields.

12.Moving iron instruments -
a) have a linear scale
b) do not have a linear scale
c) both a and b)
d) none.

13.If accuracy is the main consideration, which one of the following voltmeters should one select -
a) 100 v ; 2 mA
b) 100 v ; 100 ohm/volt
c) 100 v ; 1mA
d) 10,000 v ; 10 mA

14.In dc tacho generators used for measurement of speed of a shaft, frequent calibration has to be done because -
a) the contacts wear off
b) the strength of permanent magnet decreases with age
c) the armature current produces heating effect
d) there is back emf.

15.Ideal transformer cannot be described by -
a) h parameters
b) ABCD parameters
c) G parameters
d) parameters

16.Consider the following statements -
A3- phase balanced supply system is connected to a 3 phase unbalanced load) Power supplied to this load can be measured using
1. Two wattmeters
2. One wattmeter
3. Three wattmeters
Which of these statements is/are correct?
a) 1 and 2
b) 1 and 3
c) 2 and 3
d) 3 alone

17.The function of the reference electrode in a pH meter is to -
a) Produce a constant voltage
b) Provide temperature compensation
c) Provide a constant current
d) Measure average pH value

18.Match the column A (Devices) with column B (Characteristics) and select the correct answer by using the codes given below the column -
Column A Column B
A) BJT 1. Voltage controlled negative resistance
B) MOSFET 2. High current gain
C) Tunnel diode 3. Voltage regulation
D) Zener diode 4. High input impedance
Codes :
A B C D
a) 1 4 2 3
b) 2 4 1 3
c) 2 3 1 4
d) 1 3 2 4

19.A thyristor during forward blocking state is associated with.-
a) large current , low voltage.
b) low current , large voltage.
c) medium current , large voltage
d) low current, medium voltage.

20.In controlled rectifiers, the nature of load current i.e. whether load current is continuous or discontinuous -
a) does not depend on type of load and firing angle delay
b) depends both on the type of load and firing angle delay
c) depends only on the type of load)
d) depends only on the firing angle delay.

21A single phase voltage controller feeds power to a resistance of 10 W . The source voltage is 200 V rms. For a firing angle of 900 , the rms value of thyristor current in amperes is -
a) 20
b) 15
c) 10
d) 5

22.In the performance of single phase and three phase full converters the effect of source inductance is to
a) reduce the ripples in the load current -
b) make discontinuous current as continuous
c) reduce the output voltage
d) increase the load voltage.

23.The cycloconverters (CCs) require natural or forced commutation as under -
a) natural commutation in both step up and step down CCs
b) forced commutation in both step up and step down CCs
c) forced commutation in step up CCs
d) forced commutation in step down CCs

24.Power transistors are more commonly of -
a) silicon npn type.
b) silicon pnp type.
c) silicon nnp type.
d) silicon npp type.

25.C is a -
a) Middle level language
b) High level language
c) Low level language
d) None of above

26.What will be output of program
main ( )
{ int i ;
print f ("Enter value of i");
scant ("%d", & i);
if ( i = 5 )
print f ("you entered 5");
else
print f ("you entered %d", i ); }
if user entered 100 then
a) 5
b) 100
c) 1005
d) None

27.(7F)16 + (BA)16 = (?)16-
a) 481
b) 139
c) –481 d) –139

28.Two’s complement of 3 bit nonzero linory number is some or original number is all bits accepts- a) MSB are zeros
b) LSB are zeros
c) MSB are ones
d) LSB are ones.

29.Transistors with high frequency have -
a) Thick base
b) Thin base
c) Some other feature
d) None of the above

30.Telephone traffic is specified in terms of -
a) Average waiting time
b) Grade of service
c) Peak waiting time
d) Erlangs

31.In a Hartley oscillator -
a) Necessary phase relation is obtained by connecting grid and plate electrodes to the opposite ends of the tuned circuit.
b) The mutual inductance must have the appropriate polarity.
c) Both grid circuit and plate tuned circuit offer inductive reactance
d) None of the above

32.The condenser C is charged in a bootstrap sweep generator -
a) Linearly but the discharge is non linear
b) Non linearly but the discharge is linear
c) Linearly and the discharge is linear
d) Non linearly and the discharge is non linear

JTO SAMPLE PAPER 2

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ARICENT : Company Profile
---------------------------
ARICENT is a communications software company, offering a portfolio of software services and products for the communications industry (wireline, wireless, cable and satellite). Aricent designs, develops and maintains software that enables communications equipment manufacturers, device manufacturers and service providers to create new products or services.

PLACEMENT PATTERN
-------------------------------
1.WRITTEN TEST(TECHNICAL+APTITUDE+VERBAL)
2.TWO ROUNDS OF TECHNICAL INTERVIEWS.
3.HR INTERVIEW.

WRITTEN TEST
---------------------------
The written test has 7 sections:

1. Verbal Ability 10ques
2. Mental Ability 10ques
3. Analytical Section 10ques
4. Data Structure,Operating System 20 ques
5. C or C++ 20ques
6. Reading Comprehension
7. E-mail Writing

SAMPLE TECHNICAL QUESTIONS FOR WRITTEN TEST
--------------------------------------------------------

1. Write a programme to reverse a singly linked list?
2.Explain Normalization from (1NF - 4NF)?
3.Which is the best algorithm to sort student table, on the basis of marks?
4.Question based on Join query?
5.How semaphores are implemented?
6.Program to implement quick sort, right from the beginning including
stack?
7.Sparse matrices concept, prog and what is the need of it?
8.What is zombie process?
9.Complexity of quick sort and bubble sort?
10.What are the Protocols used at data link layer?
11.Ways of handshakes in TCP/IP?
12.Explain a case in which fcfs is the best algorithm?
13.Write programme to remove a node from a doubly linked list?
14.What are the devices used in each layer of OS model?
15.Multilevel feedback queue concept?
16.Scheduling algorithmss in OS?

TECHNICAL TOPICS for ARICENT
------------------------------
1.C or C++
----------
Pointers
Functions
Structures and unions
Bitwise Operation
Classes
OOP Concepts

2.Data Structures
-----------------
Stacks
Queues
Trees
Linked lists
Sorting Algorithims
Program to insert,delete a particular node.

3.Operating System
------------------
Memory management(virtual memory)
Paging
Segmentation
Semaphores
Real Time Operating Systems
Deadlock.

4.Computer Networks
-------------------
OSI,TCP IP Model
Basic idea of bridges
Hubs,Switches,Gateways,Routers
Packet/Circuit/Message Switching.
GPRS
GSM
CDMA
Digital electronics
Half adder,Full adder, X mod counter (X=5,10,20 etc)
K maps,MUX,DEMUX

TYPICAL ARICENT HR INTERVIEW
--------------------------------
Introduction
Family background
Hobbies
Interest (development/ testing) and why?
Why do you want to join ARICENT?
Have you ever worked in a team? and if yes what have you learned from it?
Can give you an Extempore
Will ask you to ask some questions?

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ABB - Asea Brown Boveri
Operating mainly in the power and automation technology areas.
ABB is one of the largest engineering companies in the world

PATTERN OF RECRUITMENT:
--------------------------------
1. Written Test(Aptitude + Technical).
2. Personal Interview. (Tech + HR)

Pattern for campus placement
-----------------------------
1. Written Test in campus(Aptitude + Technical).
2. Personal Interview in ABB location

Personal Interview
------------------------
Both Technical and HR combination
HR mainly deals with your extra carricular activities.


Technical Topics
-------------------------

Electrical Machines
-------------------
Motors
DC Motors-Series,Shunt,Compound Motors
Induction Motors
Servomotors-AC,DC
Generators
DC Generators
Alternators
Transformers

Control Systems
-----------------
Control System Plots
Bode Plot
Nichols Plot
Nyquists Plot
Concepts of stability
Concepts of root-locus
Conccepts of frequency response

Programmable Logic Control
----------------------------
Programmable Logic Devices

Digital Electronics
----------------------------
Basic gates
Adder,Subtractor circuits implimentation using NAND,NOR..
Combinational Logic Circuits
MUX,DEMUX
Flip-Flops-JK,D,T,RS..
Flip-Flop Conversion
Number systems

TECHNICAL PAPER
------------------------
1.In a ckt. We are giving voltage of 50 Hz as well as 60.What will be the resultant frequency.
(a)less than 50
(b) more than 60
(c) between 50 & 60
(d) none

2.In a ckt a single resistor is connected across a d.c. source, what will be the effect on current in first resistor if we connect one more resistance in parallel?

3.Why we don't like flashover in transmission line (t-line)-
(a) It may create earth fault
(b) It reduces the life of insulator

4.Total no of strands in a acsr conductor is 81, then what is the no. of conductor in its outer layer?
(a)36
(b)18
(c)24
(d)none

5.Two questions based on percentage utilisation(p.u) calculation like , p.u. calculation is given with respect to some old base and to calculate it with reference to new base.

6.Which table is referred for sag calculation?

7.in a R-L ckt a ac voltage is applied , such that instantaneous power is negative for 2ms, what will be the power factor?
(a) 9 deg
(b) 18 deg
(c) 36 Deg
(d)none

8. In an incandescent lamp which is true?
(a)luminous intensity is more than non-luminous intensity
(b)luminous intensity is less than non-luminous intensity


9. In which motor no-load to full-load diff. is lowest
(a) series motor
(b) shunt motor
(c) Compound motor

10. In a 60Hz induction motor full load speed is 850 rpm then what is the Synchronous speed?
(a) 900 rpm
(b) 950 rpm
(c) 1600rpm
(d) none

11. A sync. Motor is running at synch. Speed, if D.C. excitation is removed, then
(a) it will rotate at slip speed
(b) it will stop
(c) it will continue to rotate at sync.Speed
(d) none of the above situations.

12. A transmission line is designed for 50Hz, 440KV. If we want to transfer power at 60Hz, 440 KV, then the power transfer capability will
(a) decrease
(b) Increase
(c) None

13. Increased rotor resistance in rotor ckt of induction motor is related with
(a) high starting torque
(b) more speed variation

14. In the formulae E = 4.44 f N Ô, Ô is
(a) Avg value
(b) Rms value
(c) Maximum value

15. Voltage & current in a ckt is given by V= V1+j V2 and I= I1 +j I2, then find rms power ?

16. Input impedence of MOSFET is
(a) more than BJT
(b) less than BJT

17. Half-Adder,full-Adder implimentation Using NAND gate

18. Truth table of AND, NOR, NAND, OR, EX-OR ETC

19. Conversion of Binary number into Equivalent decimal No.

20. Megger is used for the measurement of
(a) Insulation resistance
(b) Conductor resistance

21. Form factor for sinusoidal as well as DC

22. Formulae of Regulation (Vs- Vr)* 100/ Vr, then transmission line is
(a) short transmission line
(b) long transmission line
(c) medium transmission line

23. Improvement in power factor reduces
(a) power consumed by consumer
(b) power generation
(c) both a & b

24. Question related to field test of Series Motor

25. Question related to No-load test for Synchronous motor

26. An AC voltage of 50Hz is impressed in a resistive ckt, the oscillating power has a frequency
(a) 50 Hz
(b) 100 Hz
(c) no oscillating power is there in resistive ckt

27. Insulation used in transformer ___________leakage flux.
(a) increases
(b) decreases
(c) does not affect

28. After rain what happens to Insulator
(a) break-down strength of Insulator decreases
(b)Arch length reduces

29. Diversity factor helps to
(a)Read diversity factor
(b)load factor
(c)Reserve capacity factor

30. Why capacitance is shown as a Shunt element in analysis of transmission line?

31. B-R-Y sequence is followed in three phase system, if phase voltage in B-phase is Vm sin 100, then the phase voltage in R-phase would be

32. In a particular ckt I = Im Sin (wt -270) and V = Vm Sin wt, then type of ckt is
(a) pure resistive ckt
(b) pure capacitive ckt
(c) pure inductive ckt

33. In a L-R ckt energy lost = 2000 W, energy conserved = 500W,what is the time constant

34. In electro-dynamometer A,meter & wattmeter the type of scale is
(a)Uniform
(b)Non-uniform

35. For the same current carrying capacity corona loss of ACSR will be ________than copper conductor.
(a) more
(b) less
(c) equal

36. A R-C ckt , supplied with DC, a bulb is connected across the Capacitor,what happens to the illumination, if we change the capacitance.

37. Questions based on surge impendence of over-head and under-ground cable

38. Colour-coding of resistor with tolerance Red,Red,Yellow,Gold

39. Basic electricity and Magnetism questions based on
Biot-savart law, current carrying conductor properties

40. Question on Faraday's laws of electrolysis.

APTITUDE QUESTIONS
--------------------------

Questions based on

Ratio proportion
Time and Work
Time and distance
Profit-Loss
Geometry

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