GATE Mechanical Solved question papers

#21 January 12th, 2014, 06:23 PM

Can you please provide here the solved question Paper for GATE (Mechanical Engineering)?

Aakashd · #22 January 13th, 2014, 11:55 AM

The GATE (Mechanical Engineering) exam has questions from following topics:

Engineering Mathematics
Linear Algebra
Calculus
Differential Equations
Complex Variables
Probability and Statistics
Numerical Methods

Applied Mechanics and Design
Engineering Mechanics
strength of Materials
Theory of Machines
Vibrations
Design

Fluid Mechanics and Thermal Sciences
Fluid Mechanics
Heat-Transfer
Thermodynamics
Applications

Manufacturing and Industrial Engineering
Engineering Materials
Metal Casting
Forming
Joining
Machining and Machine Tool Operations
Metrology and Inspection
Computer Integrated Manufacturing
Production Planning and Control
Inventory Control
Operations Research

Question paper:
Here is the attachment of the GATE ME question paper:

#23 January 18th, 2014, 02:48 PM

Any buddy, please provide me the GATE Solved question papers of Mechanical Engineering……….

Aakashd · #24 January 18th, 2014, 03:35 PM

Yes sure, here I am uploading a pdf file having the GATE Solved question papers of Mechanical Engineering. There are objective types of the questions available and each question contains 1 mark. This is the content of attachment:

2. The eigen values of symmetric matrix are all
(A) Complex with non-zero positive imaginary part
(B) Complex with non-zero negative imaginary part
(C) Real
(D) Pure imaginary
Answer: (C)

14. In simple exponential smoothing forecasting, to give higher weightage to recent
demand information, the smoothing constant must be close to
(A) -1 (B) zero (C) 0.5 (D) 1
Answer: (D)
Explanations:- Value of a close to one have less of a smoothing effect and give greater
weight to recent changes in the data.

16. A cube shaped casting solidifies in 5 minutes. The solidification time in minutes
for a cube of the same material, which is 8 times heavier than the original casting
will be
(A) 10 (B) 20 (C) 24 (D) 40
Answer: (B)

17. For a ductile material, toughness is a measure of
(A) Resistance to scratching
(B) Ability to absorb energy up to fracture
(C) Ability to absorb energy till elastic limit
(D) Resistance to indentation
Answer: (B)

18. In order to have maximum power from a Pelton turbine, the bucket speed must
be
(A) Equal to the jet speed (B) Equal to half the jet speed
(C) Equal to twice the jet speed (D) Independent of the jet speed
Answer: (B)

Rests of the questions are in the attachment, please click on it…….

#25 January 24th, 2014, 09:44 AM

I want to get some Question papers of GATE Mechanical Engineering exam. So can you provide the Question papers?

#26 January 30th, 2014, 11:32 AM

Can you provide me the Mechanical Engineering question papers of GATE

Vinodt · #27 January 30th, 2014, 12:18 PM

The Mechanical Engineering question paper of GATE is as follows:
Q. 1 – Q. 25 carry one mark each.
Q.1 In abrasive jet machining, as the distance between the nozzle tip and the work surface increases, the
material removal rate
(A) increases continuously.
(B) decreases continuously.
(C) decreases, becomes stable and then increases.
(D) increases, becomes stable and then decreases.
Q.2 Match the following metal forming processes with their associated stresses in the workpiece.
Metal forming process Type of stress
1. Coining P. Tensile
2. Wire Drawing Q. Shear
3. Blanking R. Tensile and compressive
4. Deep Drawing S. Compressive
(A) 1-S, 2-P, 3-Q, 4-R (B) 1-S, 2-P, 3-R, 4-Q
(C) 1-P, 2-Q, 3-S, 4-R (D) 1-P, 2-R, 3-Q, 4-S

mm. The maximum interference (in microns) in the assembly is
(A) 40 (B) 30 (C) 20 (D) 10
Q.4 During normalizing process of steel, the specimen is heated
(A) between the upper and lower critical temperature and cooled in still air.
(B) above the upper critical temperature and cooled in furnace.
(C) above the upper critical temperature and cooled in still air.
(D) between the upper and lower critical temperature and cooled in furnace.
Q.5 Oil flows through a 200 mm diameter horizontal cast iron pipe (friction factor, f = 0.0225) of
length 500 m. The volumetric flow rate is 0.2 m3/s. The head loss (in m) due to friction is (assume
g = 9.81 m/s2)
(A) 116.18 (B) 0.116 (C) 18.22 (D) 232.36

Q.7 Steam enters an adiabatic turbine operating at steady state with an enthalpy of 3251.0 kJ/kg and
leaves as a saturated mixture at 15 kPa with quality (dryness fraction) 0.9. The enthalpies of the
saturated liquid and vapor at 15 kPa are hf = 225.94 kJ/kg and hg = 2598.3 kJ/kg respectively. The
mass flow rate of steam is 10 kg/s. Kinetic and potential energy changes are negligible. The power
output of the turbine in MW is
(A) 6.5 (B) 8.9 (C) 9.1 (D) 27.0
2012 MECHANICAL ENGINEERING - ME
ME-A 3/16
Q.8 The following are the data for two crossed helical gears used for speed reduction:
Gear I : Pitch circle diameter in the plane of rotation 80 mm and helix angle 30º
Gear II : Pitch circle diameter in the plane of rotation 120 mm and helix angle 22.5º
If the input speed is 1440 rpm, the output speed in rpm is
(A) 1200 (B) 900 (C) 875 (D) 720

Q.10 A thin walled spherical shell is subjected to an internal pressure. If the radius of the shell is
increased by 1% and the thickness is reduced by 1%, with the internal pressure remaining the same,
the percentage change in the circumferential (hoop) stress is
(A) 0 (B) 1 (C) 1.08 (D) 2.02
Q.11 The area enclosed between the straight line y = x and the parabola y = x2 in the x-y plane is
(A) 1/6 (B) 1/4 (C) 1/3 (D) 1/2
Q.12 Consider the function ( ) f x x in the interval1 1 x . At the point x = 0, f(x) is
(A) continuous and differentiable.
(B) non-continuous and differentiable.
(C) continuous and non-differentiable.
(D) neither continuous nor differentiable.
Q.13 Which one of the following is NOT a decision taken during the aggregate production planning
stage?
(A) Scheduling of machines (B) Amount of labour to be committed
(C) Rate at which production should happen (D) Inventory to be carried forward

Q.15 A CNC vertical milling machine has to cut a straight slot of 10 mm width and 2 mm depth by a
cutter of 10 mm diameter between points (0, 0) and (100, 100) on the XY plane (dimensions in mm).
The feed rate used for milling is 50 mm/min. Milling time for the slot (in seconds) is
(A) 120 (B) 170 (C) 180 (D) 240
Q.16 A solid cylinder of diameter 100 mm and height 50 mm is forged between two frictionless flat dies
to a height of 25 mm. The percentage change in diameter is
(A) 0 (B) 2.07 (C) 20.7 (D) 41.4

The exam pattern of GATE 2014 is as follows:

GATE 2014 Pattern:
The GATE examination consists of a single paper of 3-hour duration that contains 65 questions carrying a maximum of 100 marks. GATE 2014 would contain questions of two different types in various papers:

1. Multiple Choice Questions (MCQ) carrying 1 or 2 marks each in all papers and sections. These questions are objective in nature, and each will have a choice of four answers, out of which the candidate has to mark the correct answer(s).

2. Numerical Answer Questions of 1 or 2 marks each in all papers and sections. For these questions the answer is a real number, to be entered by the candidate using the virtual keypad. No choices will be shown for this type of questions.

3. Marking Scheme: For 1-mark multiple-choice questions, 1/3 marks will be deducted for a wrong answer. Likewise, for 2-marks multiple-choice questions, 2/3 marks will be deducted for a wrong answer. There is no negative marking for numerical answer type questions.

4. Negative Marking: For a wrong answer chosen for the multiple choice questions, there would be negative marking. For 1-mark multiple choice questions, 1/3 mark will be deducted for a wrong answer. Likewise, for 2-mark multiple choice questions, 2/3 mark will be deducted for a wrong answer. However, there is no negative marking for a wrong answer in numerical answer type questions

#28 January 31st, 2014, 10:27 AM

Where can I get the study material for the Mechanical Engineering subject of GATE Examination?

#29 January 31st, 2014, 10:44 AM

Can any one here provide me the Solved Question Paper of GATE Mechanical Branch???

Sashwat · #30 February 4th, 2014, 12:29 PM

As you require the Solved Question Paper of GATE Mechanical Branch so here I am sharing the same with you

The eigen values of symmetric matrix are all
(A) Complex with non-zero positive imaginary part
(B) Complex with non-zero negative imaginary part
(C) Real
(D) Pure imaginary

Answer: (C)

The pressure, dry bulb temperature, and relative humidity of air in a room are
1bar, 30ºC and 70% respectively. If the saturated steam pressure at 30ºC is
4.25kPa, the specific humidity of the room air in kg water vapour / kg dry air is
(A) 0.0083
(B) 0.0101
(C) 0.0191
(D) 0.0232
Answer: (C)

In a rolling process, the state of stress of the material undergoing deformation is
(A) Pure compression
(B) Pure shear
(C) Compression and shear
(D) Tension and shear
Answer: (C)

2. The eigen values of symmetric matrix are all
(A) Complex with non-zero positive imaginary part
(B) Complex with non-zero negative imaginary part
(C) Real
(D) Pure imaginary
Answer: (C)
3. Match the CORRECT pairs:
Numerical Integration Scheme Order of Fitting Polynomial
P. Simpson’s 3/8 Rule 1. First
Q. Trapezoidal Rule 2. Second
R. Simpson’s 1/3 Rule 3. Third
(A) P-2; Q-1; R-3 (B) P-3; Q-2; R-1 (C) P-1; Q-2; R-3 (D) P-3; Q-1; R-2
Answer: (D)
5. The threaded bolts A and B of same material and length are subjected to identical
tensile load. If the elastic strain energy stored in bolt A is 4 times that of the bolt B
and the mean diameter of bolt A is 12mm, the mean diameter of bolt B in mm is
(A) 16 (B) 24 (C) 36 (D) 48
1 E 2 E
S
S
L /2
L
P P
6. A link OB is rotating with a constant angular velocity of 2 rad/s in counter
clockwise direction and a block is sliding radially outward on it with an uniform
velocity of 0.75 m/s with respect to the rod, as shown in the figure below. If
OA = 1m, the magnitude of the absolute acceleration of the block at location A in
2 m/ s is
(A) 3 (B) 4 (C) 5 (D) 6
Answer: (C)
8. The pressure, dry bulb temperature, and relative humidity of air in a room are
1bar, 30ºC and 70% respectively. If the saturated steam pressure at 30ºC is
4.25kPa, the specific humidity of the room air in kg water vapour / kg dry air is
(A) 0.0083 (B) 0.0101 (C) 0.0191 (D) 0.0232
Answer: (C)
9. Consider one-dimensional steady state heat conduction, without heat generation,
in a plane wall; with boundary conditions as shown in the figure below. The
conductivity of the wall is given by 0 k k bT ; where 0 k and b are positive
constants and T is temperature.
As x increases, the temperature gradient dT / dx will
(A) Remain constant (B) Be zero (C) Increase (D) Decrease
Answer: (D)
10. In a rolling process, the state of stress of the material undergoing deformation is
(A) Pure compression (B) Pure shear
(C) Compression and shear (D) Tension and shear
Answer: (C)
11. Match the CORRECT pairs.
Processes Characteristics / Application
P. Friction Welding 1. Non-consumable electrode
Q. Gas Metal Arc Welding 2. Joining of thick plates
R. Tungsten Inert Gas Welding 3. Consumable electrode wire
S. Electroslag Welding 4. Joining of cylindrical dissimilar materials
(A) P-4;Q-3;R-1;S-2 (B) P-4;Q-2;R-3;S-1
(C) P-2;Q-3;R-4;S-1 (D) P-2;Q-4;R-1;S-3
Answer: (A)
12. A metric thread of pitch 2mm and thread angle 60º is inspected for its pitch
diameter using 3-wire method. The diameter of the best size wire in mm is
(A) 0.866 (B) 1.000 (C) 1.154 (D) 2.000
Answer: (C)
13. Customers arrive at a ticket counter at a rate of 50 per hour and tickets are
issued in the order of their arrival. The average time taken for issuing a ticket is
1min. Assuming that customer arrivals form a Poisson process and service times
are exponentially distributed, the average waiting time in queue in minutes is:
(A) 3 (B) 4 (C) 5 (D) 6
Answer: (C)
14. In simple exponential smoothing forecasting, to give higher weightage to recent
demand information, the smoothing constant must be close to
(A) -1 (B) zero (C) 0.5 (D) 1
Answer: (D)
15. A steel bar 200 mm in diameter is turned at a feed of 0.25 mm/rev with a depth
of cut of 4 mm. The rotational speed of the workpiece is 160 rpm. The material
removal rate in 3 mm / s is
(A) 160 (B) 167.6 (C) 1600 (D) 1675.5
Answer: (D)
16. A cube shaped casting solidifies in 5 minutes. The solidification time in minutes
for a cube of the same material, which is 8 times heavier than the original casting
will be
(A) 10 (B) 20 (C) 24 (D) 40
Answer: (B)
5
17. For a ductile material, toughness is a measure of
(A) Resistance to scratching
(B) Ability to absorb energy up to fracture
(C) Ability to absorb energy till elastic limit
(D) Resistance to indentation
Answer: (B)
18. In order to have maximum power from a Pelton turbine, the bucket speed must
be
(A) Equal to the jet speed (B) Equal to half the jet speed
(C) Equal to twice the jet speed (D) Independent of the jet speed
Answer: (B)
19. Consider one-dimensional steady state heat conduction along x-axis 0 x L ,
through a plane wall with the boundary surfaces x 0 and x = L maintained at
temperatures 0ºC and 100ºC. Heat is generated uniformly throughout the wall.
Choose the CORRECT statement.
(A) The direction of heat transfer will be from the surface at 100ºC to surface at
0ºC.
(B) The maximum temperature inside the wall must be greater than 100ºC
(C) The temperature distribution is linear within the wall
(D) The temperature distribution is symmetric about the mid-plane of the wall
Answer: (B)
20. A cylinder contains 3 5m of ideal gas at a pressure of 1 bar. This gas is
compressed in a reversible isothermal process till its pressure increases to 5 bar.
The work in kJ required for this process is
(A) 804.7 (B) 953.2 (C) 981.7 (D) 1012.2
Answer: (A)
21. A long thin walled cylindrical shell, closed at both ends, is subjected to an internal
pressure. The ratio of the hoop stress (circumferential stress) to longitudinal
stress developed in the shell is
(A) 0.5 (B) 1.0 (C) 2.0 (D) 4.0
22. If two nodes are observed at a frequency of 1800 rpm during whirling of a simply
supported long slender rotating shaft, the first critical speed of the shaft in rpm is
(A) 200 (B) 450 (C) 600 (D) 900
Answer: (D)
23. A planar closed kinematic chain is formed with rigid links PQ = 2.0m, QR = 3.0m,
RS = 2.5m and SP = 2.7m with all revolute joints. The link to be fixed to obtain a
double rocker (rocker-rocker) mechanism is
(A) PQ (B) QR (C) RS (D) SP
Answer: (C)
24. Let X be a nominal variable with mean 1 and variance 4. The probability P X 0 is
(A) 0.5
(B) Greater than zero and less than 0.5
(C) Greater than 0.5 and less than 1
(D) 1.0
25. Choose the CORRECT set of functions, which are linearly dependent.
(A) 2 2 sinx, sin x and cos x (B) cosx, sinx and tan x
(C) 2 2 cos2x, sin x and cos x (D) cos2x, sinx and cosx
Answer: (C)
28. Specific enthalpy and velocity of steam at inlet and exit of a steam turbine,
running under steady state, are as given below:
Specific enthalpy (kJ/kg) Velocity(m/s)
Inlet steam condition 3250 180
Exit steam condition 2360 5
The rate of heat loss from the turbine per kg of steam flow rate is 5 kW.
Neglecting changes in potential energy of steam, the power developed in kW by
the steam turbine per kg of steam flow rate, is
(A) 901.2 (B) 911.2 (C) 17072.5 (D) 17082.5
Answer: (C)
29. Water is coming out from a tap and falls vertically downwards. At the tap
opening, the stream diameter is 20mm with uniform velocity of 2 m/s.
Acceleration due to gravity is 9.81 2 m / s . Assuming steady, inviscid flow,
constant atmospheric pressure everywhere and neglecting curvature and surface
tension effects, the diameter is mm of the stream 0.5m below the tap is
approximately
(A) 10 (B) 15 (C) 20 (D) 25
Answer: (B)
30. A steel ball of diameter 60 mm is initially in thermal equilibrium at 1030 C in a
furnace. It is suddenly removed from the furnace and cooled in ambient air at
30 C , with convective heat transfer coefficient h=20 2 W /m K. The thermophysical
properties of steel are: density 3 7800 kg /m , conductivity
W
k 40
mK
and specific heat c=600 J/kgK. The time required in seconds to cool
the steel ball in air from 1030 C to 430 C is
(A) 519 (B) 931 (C) 1195 (D) 2144
Answer: (D)
31. A flywheel connected to a punching machine has to supply energy of 400 Nm
while running at a mean angular speed of 20 radians/s. If the total fluctuation of
speed is not to exceed 2% , the mass moment of inertia of the flywheel in
2 kg m −is
(A) 25 (B) 50 (C) 100 (D) 125
Answer: (A)
32. A compound gear train with gears P, Q, R and S has number of teeth 20, 40,
15 and 20, respectively. Gears Q and R are mounted on the same shaft as
shown in the figure below. The diameter of the gear Q is twice that of the gear
R. If the module of the gear R is 2 mm, the center distance in mm between
gears P and S is
(A) 40
(B) 80
(C) 120
(D) 160
Answer: (B)
33. A pin jointed uniform rigid rod of weight W and Length L is supported horizontally
by an external force F as shown in the figure below. The force F is suddenly
removed. At the instant of force removal, the magnitude of vertical reaction
developed at the support is
(A) zero (B)
W
4
(C)
W
2
(D) W
Answer: (B)

Rest of the Questions are attached in below pdf file