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.
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