Mechanical:

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,machinabilit y)

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.

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.

I.Q-Test, which is on the basis of some figures. What will be the last figure? You have to find the answer
l
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.

The second part is of 30 minutes and covers various (IMHO irrelevant)
topics. Some more questions. Remember all are multiple choice questions
with either 4 or 5 options so you have at least a 20-25% chance of
being right even if you are clueless. No negative marking.

1. what is an inode in unix?
2. small program in pascal to add a node to a linked list. (You have to
tell what the program does)
3. C strcmp program (You have to tell what the program does)
4. set of dos commands testing basic familiarity with dir, ren *.t?t,
cd etc.
5. what is the order of binary search?
6. what is the order of strassens matrix multiplication?
7. you have to maintain the sorted order of integers and insert
integers . which data structure would you use? (tree, list, queue,
array?)
8. There are two lists of integers to be merged. Which method would you
not use?
9. In an online database system when is data written to disk? (on
pressing enter, when commit or update is encountered, at end of data,
all of the above) (was clueless! )
10. Small prolog function which prints 2345true. You need to tell
output.
11. Convert this binary into octal. 010 100 101
12. Lisp program given. what does it do? (GCD, LCM, Multiplies mxn?)
13. What is paging?
14. what is segmentation?
15. 2/3 questions on equivalence class, associative and commutative
properties.
16. question on poset.
17. one figure given, give regular expression for it

1). Piggy backing is a technique for

a) Flow control b) sequence c) Acknowledgement d) retransmition

ans: c piggy backing

2). The layer in the OST model handles terminal emulation

a) session b) application c) presentation d) transport

ans: b application

3) there is an employer table with key feilds as employer no. data in every
n’th row are needed for a simple following queries will get required results.

a) select A employe no. from employe A , where exists from employe B
where A employe no. >= B employe having (count(*) mod n)=0
b) select employe no. from employe A, employe B where
A employe no. >= B employ no. grouply employe no. having (count(*) mod n=0 )
c) both a& b
d)none of the above

4) type duplicates of a row in a table customer with non uniform key feild
customer no. you can see

a) delete from costomer where customer no. exists ( select distinct customer no. from customer having count )
b) delete customer a where customer no. in (select customer b where custermer no. equal to b custemor no. ) and a rowid > b rowid
c) delete customer a where custermor no. in (select customer no. from customer a, customer b )
d) none of the above

SECTION-II

1) long int size
a) 4 bytes b) 2 bytes c) compiler dependent d) 8 bytes
ans: compiler dependent
note: order of a,b,c,d are doubt but answer is correct.

2) x=2,y=6,z=6
x=y==z;
printf(%d”,x) ?

3) one question on: -=+,*=-,/=* etc
then 10/5*45=?

4)

define max 10
main()
{int a,b;
int *p,*q;
a=10;b=19;
p=&(a+b);
q=&max;
}

a)error in p=&(a+b) b)error in p=&max c)error in both d) no error

SECTION-III

following are not in order:

1. M > D > Y ans: (a)

2. 10 in 4 seconds, ? in 6 minutes = 10×6x60/4 = 900 ans: (a)

3. 100(100000000+100000000)/10000 = 2×1000000 (ans).

4. Q is not equal to zero and k = (Q x n – s)/2 find n?
(a) (2 x k + s)/Q (b) (2 x s x k)/Q (c) (2 x k – s)/Q
(d) (2 x k + s x Q)/Q (e) (k + s)/Q

5. If A occurs which of the following must occurs
I. F & G
II. E and H
III. D
(a) I only (b) II only (c) III only (d) I,II, & III (e) I & II (or) II & III but not both ans: (e)

6. If B occurs which must occur
(a) D (b) D and G (c) G and H (d) F and G (e) J ans: (a)

13. If J occurs which must have occured
(a) E (b) either B or C (c) both E & F (d) B (e) both B & C ans: (b)

14. which may occurs as a result of cause not mentioned
(1) D (2) A (3) F
(a) 1 only (b) 2 only (c) 1 & 2 (d) 2 & 3 (e) 1,2,3 ans: (c)

15. E occurs which one cannot occurs
(a) A (b) F (c) D (d) C (e) J ans: (b)