L & T Aptiture Questions

Discussion in 'Latest Placement papers' started by Guest, Feb 19, 2007.

  1. Guest

    Guest Guest

    There are three question papers in the written test.

    I.Q-Test, which is on the basis of some figures. What will be the last figure? You have to find the answer
    from information of the other fig.
    Aptitude Test, which is on the basis of dipartmental
    subject (Mechanical). There are 60 questions on
    figure. Subject- Gear, Belt Pulley, Different type of
    vessel likes cylinder, cone, cube, sphere etc. You
    have to find the volume or surface area.
    Technical Test- 50 questions, some questions are here.

    (EKT)
    I.Q test and aptitude tests are same for all departments.
    1) Answer: T=W/2sin@
    2) In the cast iron, what is the type of carbon?
    Ans.: a) graphite b) solid solution etc.
    What is the vulcanization of rubber? (addition of sulphur to form cross sulphur bond to remove stickness)
    In which case the flywheel will be heavy?
    40kw 4 stroke SI engines with rpm 1400.
    40kw 2 stroke SI engines with rpm 750.
    40kw 4 stroke Diesel engines with rpm 1400.
    40kw 2 stroke Diesel engines with rpm 750.
    What is the dimension of Young modulus? M L^-1T^-2
    A spring has the stiffness of K. If the spring is cut into two parts, then what will be the spring stiffness OF EACH SPRING?
    In what case the work done will be zero?
    Ans. Constant volume process.
    In a vessel there is some gas. The pressure is 3 bar and temperature is 27oC. Now the temperature is increased to 177oC.
    What will be the pressure on the vessel if the volume remains constant?
    In what case the surface finish will be better?
    Honing b) lapping c) grinding d) Reaming
    What is the function of the no of the teeth of the milling cutter?
    Ans. To get better surface finish.
    In what case the speed reduction may be 50:1?
    Spur gear b) Worm wheel c) Bevel gear
    *Two shafts 1 solid and other hollow. Same outside dia..Hollow shaft inner dia=. 5*outside dia.ratio bet. Torque .......15/16
    *vulcanization of rubber is done to
    a>increase tensile strength
    b>change plasticity to elasticity
    *Non-parallel non-intersecting shaft axes what gears are used.
    worm gear
    *Manganese steel is used in tractor.....abrasive(cold rolling)
    *for same compression ratio arrange according to decreasing efficiency the following
    Otto dual diesel
    *What is the process for preparing blind hole?
    a) EDM wire b) leaser ...
    *Why pulley crowning is made?
    *Zeroth law define what?
    *What change occurs in microstructure of steel during Case hardening?
    *For which the spindle speed is slow........
    Thread cutting
    *total heat transfer for const volume process for ideal gas 20kj .the temp of source and sink are 100C and 30 C What is the work
    transfer....
    1.70kj, 2.0kj .3.40kj.... ans (probably) 0
    *Centrifugal pump when started delivery valve is .
    1.50%open 2.open 3closed.
    *What are the alloying elements of brass....
    Ans. Copper and zinc.
    *Mixture of water and cutting oil gives...
    1.colloid 2>emulsion 3suspention ...................
    *Tapper self locking device is used in...
    1.twist drill 2.reammer.......
    THE PROBABLE SEQUENCE IS
    1-A,2-B,4-C,5-C,7-C,8-D,10-E,13-C,14-B,15-B,18-D,19-D,
    25-D,34-B,32-D,33-D,17-B,26-A,30-D.
    .............................................................................................
    MCC 40minutes 60 easy questions
    ans are
    1-c,2-b,3-d,4-c,5-a,6-d,7-d,8-c,10-b,11-b,12-c,13-c,14-c16-d,
    17-e,18-d,21-b,23-d,24-a,25-b,27-d,28-c,29-b,30-a,31-c,34-c,35-c,37-a,38-b.

    .........................................................................................
    sat 40minutes 36 questions
    8-pictures for each qustions .8-options for answer
    1-5,2-1,3-7,4-4,5-3,6-7,7-6,8-7,9-6,10-4,11-5,12-6,13-2,14-1,15-1,16-4,17-6,18-7,20-8,21-8,22-7,23-6,25-7,38-8,31-8.



    second paper was as follows;
    1. technical 52 quest. simple, brush up ur technicals
    2. mechanical aptitude simple quest on physics, applied mech.
    need not to study. do not bother abt it.
    3. non verbal reasoning on figures.
    i am sending few ques.
    electrical.....
    1. transmision losses in india> (ans:20%)
    2. generating capacity of india> ( ans:1,00,000)
    3. motor used in traction> ( ans: dc series motor)
    4. numericals of changing delta to star & vice versa. resistance
    to be found.
    5. acsr conductors are used for------ reducing corona

    mechanical:


    SECTION ONE
    ---------------------------
    these are the questions which are asked in technical section .
    in total there were 46 questions and the given was 30 minutes.
    somebody was saying that they have given the last year paper.
    after the questions i am giving the options (the order of questions and as wel as options
    may not be the same)

    1 in diesel engine the comp. ratio is ______ then expansion ratio(more,equal,less,...)


    2 carbon help in the improving __ of steel(ductility,malliability,hardness,machinability)

    3 max hardness in steel is due to
    a carbon b sulpher & phosphorus c alloy metal d none

    4 CI is used in heavy m/c beds due to(low cost,has high damping coefficient,its easier)
    5 spring in series,give relation for stiffness(ans:k1*k2/(k1+k2)
    6 two material of conductivity k & 2k are used in laggging the pipe,find the position of
    material w r to each other for minimum conduction[inner]
    7 cronining in pully is done to
    8 the shape of the b.m. diagram of cantilever carrying u d l is rectangular hyperbola
    9 hammer blow in pipe is due to
    10 for uniform st of beam.
    11 which beam will be uniformly loaded
    a] a simply suported beam carrying point load at center
    b]-------------------------------- u d l over whole length
    c]-------------------------------------------centraly half of length
    d] a cantilever beam carying u d l


    12 a petrol engine having carbon deposition over the piston will effect on
    13 fuel air ratio in engine having dirty oil filter as compared in carburator with clean oil
    filter is (ans more)
    14 areoplane wing are formed by
    a]casting
    b]forgiing
    c]wire edm
    d]stretch forming
    15 for butt welding of dissimilar metal of unequal thickness,which parameteer should have
    a]time of cureent
    b]pressure and time of current etc

    16 plastic are welded by
    a] e beam welding
    b]co2 welding
    c]gas weldinng
    d]ultrasonic weldind

    17 which of the followwinng is not fusion welding
    oxy-acetylene,co2 wel,submergedd welding

    18 effect of shear angle in punching
    19 dia. of the hole formed in shearing/blanking is given by

    20 effect of increasing the length of arc in arc welding

    21 if the condenser vaccum is lost suddenly,the steam turbine is hipped because
    22 worm gear & worm wheel are used in(high reduction ratio,low reduction ratio...)
    23 if the dia. of pully is increased ,width being kept constant,what should be done to the key
    24] thermosetting plastics are moulded by which moulding(investment moulding)
    25]what is rupture stress
    26]what is the range of pressure in industrial pneumatic pipe line
    27]two plates are joined by riveting(lap) which and how many rivets should be used
    a]4 rivets 10 mm dia
    b]1 rivets 12 mm dia.
    c]2 rivets 8 mm dia.
    ans c.(to avoid rotary motion)
    28]damper is
    a]energy producing device.
    b]energy absorbing device.
    c]energy dissipating device.
    d]vibration reducing device.
    ans b.
    29]there are six cylinder in line rotary engine.how many cranks does this engine has.

    SORRY! I COULDN'T REMEMBER THE REST OF THIS SECTION

    SECTION 2
    ----------------------------

    THIS SECTION CONTAINS VERY LOGICAL QUESTIONS BASED ON GEARS,PULLEY AND LIQUID PRESSURE.
    TOTAL 60 QUESTIONS TIME ALLOTTED IS 40 MIN THIS SECTION CONTAINS MANY FIGURES AND QUESTIONS
    ARE ASKED BASED ON THOSE FIGURES.FOR EXAMPLE

    1]7 or 8 gears or wheels are connected either directly or through belt drives.the direction
    of motion of one gear is specified.and asked which all other gear will rotate in the same
    direction.

    IT IS NOT POSSIBLE FOR TO GIVE FIGURES FOR THESE QUESTIONS.THIS WHOLE SECTION CONTAINS
    AT LEAST 10 QUESTIONS OF THIS TYPE.

    2]10 QUESTIONS ARE BASED ON WEIGHT LIFTING ARRANGEMENTS LIKE LEVER,CYLIDER WRAPPED WITH A ROPE
    OPERATED THROUGH HAND CRANK,3-4 PULLEY ARRANGEMENTS,THE MECHANISM USED TO LIFT THE ENGINES OF
    CARS.YOU HAVE TO FIND OUT IN WHICH MECHANISM LEAST STRENGTHIS NEEDED.

    3]8-10 QUESTIONS WERE BASED ON LIQUID PRESSURE.4 JARS ARE FULL OF WATER UP TO THE SAME HEIGHT.
    THESE JARS ARE PROVIDED WITH TUBING OF DIFFERENT LENGTH AND SHAPE AND ASKED IN WHICH FIGURE
    WE WILL HAVE HIGHEST PRESSURE AT THE END OF THE TUBE.

    4]ONE QUESTION WAS : IN A CENTRIFUGE WATER OIL AND MERQUERY IS POURED AND ROTATED.THEN WHICH
    LIQUID WILL BE AT THE CENTERAND WHICH ONE WILL BE AT THE PERIFERI.

    5]ONE QUESTION WAS :A MAN IS STANDING ON A STAND GENERALLY USED BY ELECTRICIAN ( /\ TYPE) AT
    DIFFERENT POSITIONS AND DIFFERENT HEIGHT AND DRILLING A HOLE IN THE WALL.IN WHICH CASE HE IS
    LIKELY TO FALL.

    6]THERE ARE 5 SHAPES FOR A DAM
    1 >
    2 <
    3 )
    4 (
    5 |
    WHICH WILL BE THE SAFEST.

    7]TWO OR THREE QUESTIONS WERE ASKED ON BALANCING OF MASSES.LIKE ONE WEIGHT IS HUNG ON ONE SIDE
    OF A LEVER THEN WHAT WILL BE THE WEIGHT OF BALANCING ONE.


    SECTION 3
    --------------------------

    THIS SECTION IS OF FIGURATIVE APPTITUDE.
    IN A 3 BY 3 MATRIX ONLY THE LAST BOX IS EMPTY.
    FIGURES OF EACH ROW HAS SOME RELATION AMONG THEM.SO YOU HAVE TO FIND THE MISSING FIGURE
    FROM 7 OPTIONS.

    THIS SECTIONS COTNTAINS 36 SUCH QUESTIONS . IT WON TAKE MORE THAN 15 MINUTES TO SOLVE UPTO 20.
    BUT THEN IT BECOMES SOMEWHAT TOUGHER.THE TOTAL TIME ALOTTED IS 40 MIN.

    THERE IS A BOOK CALLED "HOW TO FACE INTERVIEWS".THIS BOOK CONTAINS THE SAME TYPE OF QUESTIONS.
    APPROX 15 QUESTIONS WERE ASKED DIRECTLY FROM THAT BOOK.



    THAT'S ALL. BEST OF LUCK
    -----------------------------------------------------------------------------------------------------------------------------
    third paper is as follows
    dearest friend,
    i m sending L&T questions which was asked there in our college on31st july,2004.......
    the pattern is like:
    1) branch related ques. 50(30 min)
    2) engg. aptitude test 60(40 min.)
    3) non verbal ques. 36 (40 min)
    mech. ques which i can recall is ...may not be as per the language stated there in paper but it would really help there a lot.....
    mech.
    1.what is the equivalent spring constant of two srings with k1 & k2 as sring constant connected in series? ans. k1.k2/(k1+k2)
    2.by which moulding we produce thermosetting plastics?
    3.when air is dirty what will be the injectility of the fuel .................more ?
    4.carbon deposits increase the comp. ratio.
    5.carbon increases the hardness.
    6.hot fluid passes thro the cylinder. by using two insulating material(k,2k)in which sequence may be more effective.......? ( firstk, then 2k matl.)

    7.wings of the plane can be made by stretching.
    8.what will be the metal removal ratio if the balancings r done at 3000&1500 rpm..
    ( cent. forces to be considered......ans 1:4)
    9.what is cylinder ratio? ans. arrangement of cylinders in which the centre line of crankshaft journal is per.to the plane containing the centrelines of the engine cylinders.
    10. In diesel cycle the compression ratio incereases more to expension ratio.
    11. In the shm of the ball inside a earth hole passing through the center ,velocity maximum at the center.
    12.viscosity of liquid increases with decrese in temprerature.
    13. Piezometer measures static pressure..
    14. Which iron is used for body construction of machines, gray or white iron ?( not sure)
    15.what is core print ?
    16. pig iron is manufacture in --------blast furness
    17. what is the effect of increase arc lenght in building
    18. m 62 indicates ------ 6mm outer diameter & 2 mm pitch
    19. what raputre failure.
    20 . 6 cylinders in a row , n0. of crancks = 1
    21. If in a steam power plant vaccum in condensor reduces what is the effect
    22. pressure in industrial pnumatic lines -------5 to 10 bar
    23. effect of low temp. ( -20 degree ) on carbon steel .
    24.method of hardening of machine guidesways
    25. method of joining plastic by welding
    26. safe method of loading on a cantileaver
    a) UDL b) center point load c) triangular load having zero at center
    27. BMD for UDL in cantilever
    Ans. parabolic
    28. Beams of uniform strenght can be made by
    a) varying width b) varying depth c) both d) none
    29. which of these not fusion welding process
    Ans: spot welding
    30. function of stroboscope is
    Ans: speed measurement of spur gear
    31.if diameter of pully is double how will the design of key way change
    32.gray cast iron used for machine parts
    33. use of worm gear
    34.what will be the diameter of punched hole in punching opereation
    a) same as punch b) punch dia + thichkness of sheet
    35. this is figure porblem
    described as :
    there is right anguler wadge with pully at vertex connecting
    two equal masses by string one on the sloping side and other
    on the vertical side
    Questin is what will happen to them
    Ans: mass will fall down


    Fourth paperdearest friend,
    i m sending L&T questions which was asked there in our college on31st july,2004.......
    the pattern is like:
    1) branch related ques. 50(30 min)
    2) engg. aptitude test 60(40 min.)
    3) non verbal ques. 36 (40 min)
    mech. ques which i can recall is ...may not be as per the language stated there in paper but it would really help there a lot.....
    mech.
    1.what is the equivalent spring constant of two srings with k1 & k2 as sring constant connected in series? ans. k1.k2/(k1+k2)
    2.by which moulding we produce thermosetting plastics?
    3.when air is dirty what will be the injectility of the fuel .................more ?
    4.carbon deposits increase the comp. ratio.
    5.carbon increases the hardness.
    6.hot fluid passes thro the cylinder. by using two insulating material(k,2k)in which sequence may be more effective.......? ( firstk, then 2k matl.)

    7.wings of the plane can be made by stretching.
    8.what will be the metal removal ratio if the balancings r done at 3000&1500 rpm..
    ( cent. forces to be considered......ans 1:4)
    9.what is cylinder ratio? ans. arrangement of cylinders in which the centre line of crankshaft journal is per.to the plane containing the centrelines of the engine cylinders.
    10. In diesel cycle the compression ratio incereases more to expension ratio.
    11. In the SHM of the ball inside a earth hole passing through the center ,velocity maximum at the center.
    12. viscosity of liquid increases with decrese in temprerature.
    13. Piezometer measures static pressure..
    14. Which iron is used for body construction of machines, gray or white iron ?( gray )
    15. what is core print ? ans(impression formed by projection on pattern)
    16. pig iron is manufacture in --------blast furness
    17. what is the effect of increase arc lenght in welding?
    18. m 62 indicates ------ 6mm outer diameter & 2 mm pitch
    19. what rupture failure.(breaking of a specimen due to loading beyond uts)
    20. 6 cylinders in a row , n0. of crancks = 1
    21. If in a steam power plant vaccum in condensor reduces what is the effect
    22. pressure in industrial pneumatic lines -------5 to 10 bar
    23. effect of low temp. ( -20 degree ) on carbon steel .
    24. method of hardening of machine guidesways(cyaniding,nitriding,shotpeening)
    25. method of joining plastic by welding
    26. safe method of loading on a cantileaver
    a) UDL b) center point load c) triangular load having zero at center
    27. BMD for UDL in cantilever
    Ans. parabolic
    28. Beams of uniform strenght can be made by
    a) varying width b) varying depth c) both d) none(d)
    29. which of these not fusion welding process
    Ans: spot welding
    30. function of stroboscope is
    Ans: speed measurement of rotary device.
    31. if diameter of pulley is double how will the design of key way change(no chg).
    32. gray cast iron used for machine parts
    33. use of worm gear
    34. what will be the diameter of punched hole in punching opereation
    a) same as punch b) punch dia + thichkness of sheet
    35. this is figure porblem
    described as :
    there is right anguler wedge with pulley at vertex connecting
    two equal masses by string one on the sloping side and other
    on the vertical side
    Questin is what will happen to them
    Ans: right hand side mass will fall down
  2. Guest

    Guest Guest

    L & T aptitude

    Hey Poonam, it was very nice of you to put the L&T aptitude qs. I just wanted to ask that this aptitude test was concentrated more on the mechanical side. so was it for all branches including electronics and telecom or mainly for mech and instru??? pls reply soon... i have a L&T aptitude on 5th... so pls reply as soon as possible. u can also mail me at sforshailesh@yahoo.co.in.

    Thanks and regards,
    Shailesh

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