FirstRanker Logo

FirstRanker.com - FirstRanker's Choice is a hub of Question Papers & Study Materials for B-Tech, B.E, M-Tech, MCA, M.Sc, MBBS, BDS, MBA, B.Sc, Degree, B.Sc Nursing, B-Pharmacy, D-Pharmacy, MD, Medical, Dental, Engineering students. All services of FirstRanker.com are FREE

📱

Get the MBBS Question Bank Android App

Access previous years' papers, solved question papers, notes, and more on the go!

Install From Play Store

Download GATE 2016 ME02 Mechanical Engineering Question Paper With Solution And Answer Key

Download GATE (Graduate Aptitude Test in Engineering) Last 10 Years 2020, 2019, 2018, 2017, 2016, 2015, 2014, 2013, 2012, 2011 and 2010 ME02 Mechanical Engineering Question Papers With Solutions And Answer Keys

This post was last modified on 18 December 2019

GATE Previous Last 10 Years 2010-2020 Question Papers With Solutions And Answer Keys


Firstranker's choice FirstRanker.com

GATE 2016 FirstRanker.com

Q. 1 – Q. 5 carry one mark each.

--- Content provided by⁠ FirstRanker.com ---

Q.1

The volume of a sphere of diameter 1 unit is __________ than the volume of a cube of side 1 unit.

(A) least (B) less (C) lesser (D) low

Q.2

The unruly crowd demanded that the accused be __________ without trial.

--- Content provided by‍ FirstRanker.com ---

(A) hanged (B) hanging (C) hankering (D) hung

Q.3

Choose the statement(s) where the underlined word is used correctly:

(i) A prone is a dried plum.

(ii) He was lying prone on the floor.

--- Content provided by‍ FirstRanker.com ---

(iii) People who eat a lot of fat are prone to heart disease.

(A) (i) and (iii) only (B) (iii) only (C) (i) and (ii) only (D) (ii) and (iii) only

Q.4

Fact: If it rains, then the field is wet.

Read the following statements:

--- Content provided by​ FirstRanker.com ---

(i) It rains

(ii) The field is not wet

(iii) The field is wet

(iv) It did not rain

Which one of the options given below is NOT logically possible, based on the given fact?

--- Content provided by‌ FirstRanker.com ---

(A) If (iii), then (iv). (B) If (ii), then (iv).

(C) If (i), then (ii). (D) If (i), then (iii).

Q.5

A window is made up of a square portion and an equilateral triangle portion above it. The base of

the triangular portion coincides with the upper side of the square. If the perimeter of the window is

--- Content provided by FirstRanker.com ---

6 m, the area of the window in m2 is __________.

(A) 1.43 (B) 2.06 (C) 2.68 (D) 2.88

FirstRanker.com

Firstranker's choice FirstRanker.com

GATE 2016 FirstRanker.com

--- Content provided by‍ FirstRanker.com ---

Q. 6 – Q. 10 carry two marks each.

Q.6

Students taking an exam are divided into two groups, P and Q such that each group has the same

number of students. The performance of each of the students in a test was evaluated out of 200

marks. It was observed that the mean of group P was 105, while that of group Q was 85. The

--- Content provided by‍ FirstRanker.com ---

standard deviation of group P was 25, while that of group Q was 5. Assuming that the marks were

distributed on a normal distribution, which of the following statements will have the highest

probability of being TRUE?

(A) No student in group Q scored less marks than any student in group P.

(B) No student in group P scored less marks than any student in group Q.

--- Content provided by⁠ FirstRanker.com ---

(C) Most students of group Q scored marks in a narrower range than students in group P.

(D) The median of the marks of group P is 100.

Q.7

A smart city integrates all modes of transport, uses clean energy and promotes sustainable use of

resources. It also uses technology to ensure safety and security of the city, something which critics

--- Content provided by⁠ FirstRanker.com ---

argue, will lead to a surveillance state.

Which of the following can be logically inferred from the above paragraph?

(i) All smart cities encourage the formation of surveillance states.

(ii) Surveillance is an integral part of a smart city.

(iii) Sustainability and surveillance go hand in hand in a smart city.

--- Content provided by‍ FirstRanker.com ---

(iv) There is a perception that smart cities promote surveillance.

(A) (i) and (iv) only (B) (i) and (iii) only

(C) (iv) only (D) (ii) only

Q.8 Find the missing sequence in the letter series.

B, FH, LNP, ____ .

--- Content provided by FirstRanker.com ---

(A) SUWY (B) TUVW (C) TVXZ (D) TWXZ

Q.9 The binary operation ? is defined as a ? b = a.b+(a+b), where a and b are any two real numbers.

The value of the identity element of this operation, defined as the number x such that a ? x = a, for

any a, is __________.

(A) 0 (B) 1 (C) 2 (D) 10

--- Content provided by FirstRanker.com ---

FirstRanker.com

Firstranker's choice FirstRanker.com

GATE 2016 FirstRanker.com

Q.10 Which of the following curves represents the function y = ln(|ei|sin (|x|)|]]) for |x| < 2p?

Here, x represents the abscissa and y represents the ordinate.

--- Content provided by FirstRanker.com ---

1.5

p

2p

1

0.5

--- Content provided by FirstRanker.com ---

-2p

-p

0

?

-0.5

--- Content provided by FirstRanker.com ---

-1-

(A)

-1.5

1.5

1

--- Content provided by FirstRanker.com ---

0.5

?~

-2p

-p

0

--- Content provided by‍ FirstRanker.com ---

-0.5

-1

-1.5

(B)

1.2

--- Content provided by‍ FirstRanker.com ---

1

0.8

0.6

p

MM

--- Content provided by‍ FirstRanker.com ---

0.4

0.2

0

-2p

-p

--- Content provided by FirstRanker.com ---

p

2p

(C)

1.2

1

--- Content provided by FirstRanker.com ---

0.8

0.6

WW

0.4

0.2

--- Content provided by​ FirstRanker.com ---

0

-2p

-p

p

2p

--- Content provided by⁠ FirstRanker.com ---

2p

(D)

END OF THE QUESTION PAPER

FirstRanker.com

Firstranker's choice FirstRanker.com

--- Content provided by⁠ FirstRanker.com ---

GATE 2016 FirstRanker.com

Q. 1 – Q. 25 carry one mark each.

Q.1 The condition for which the eigenvalues of the matrix

? = [2 1]

are positive, is

--- Content provided by⁠ FirstRanker.com ---

(A) k > 1/2 (B) k > -2 (C) k > 0 (D) k < -1/2

Q.2 The values of x for which the function

f(x) =

?² - 3? - 4

?² + 3? - 4

--- Content provided by FirstRanker.com ---

is NOT continuous are

(A) 4 and -1 (B) 4 and 1 (C) -4 and 1 (D) -4 and -1

Q.3 Laplace transform of cos(?t) is

(A)

?

--- Content provided by⁠ FirstRanker.com ---

?² + ?²

(B)

?

?² + ?²

(C)

--- Content provided by‍ FirstRanker.com ---

?

?² - ?²

(D)

?

?² - ?²

--- Content provided by​ FirstRanker.com ---

Q.4 A function ? of the complex variable z = ? + ? ?, is given as ?(?, ?) = ?(?, ?) + ? ?(?, ?), where

?(?, ?) = 2? and ?(?, ?) = ?² - ?². The value of ?, for which the function is analytic, is ________.

Q.5 Numerical integration using trapezoidal rule gives the best result for a single variable function,

which is

(A) linear (B) parabolic (C) logarithmic (D) hyperbolic

--- Content provided by FirstRanker.com ---

Q.6 A point mass having mass M is moving with a velocity V at an angle ? to the wall as shown in the

figure. The mass undergoes a perfectly elastic collision with the smooth wall and rebounds. The

total change (final minus initial) in the momentum of the mass is

V

y,î

--- Content provided by​ FirstRanker.com ---

?

x, î

(A) - 2MV cos ? î (B) 2MV sin ? j (C) 2MV cos ? j (D) -2MV sin ? j

ME (Set-2) FirstRanker.com

Firstranker's choice FirstRanker.com

--- Content provided by​ FirstRanker.com ---

GATE 2016 FirstRanker.com

Q.7 A shaft with a circular cross-section is subjected to pure twisting moment. The ratio of the

maximum shear stress to the largest principal stress is

(A) 2.0 (B) 1.0 (C) 0.5 (D) 0

Q.8 A thin cylindrical pressure vessel with closed-ends is subjected to internal pressure. The ratio of

--- Content provided by‍ FirstRanker.com ---

circumferential (hoop) stress to the longitudinal stress is

(A) 0.25 (B) 0.50 (C) 1.0 (D) 2.0

Q.9 The forces F1 and F2 in a brake band and the direction of rotation of the drum are as shown in the

figure. The coefficient of friction is 0.25. The angle of wrap is 3 p/2 radians. It is given that R = 1 m

and F2 = 1 N. The torque (in N-m) exerted on the drum is ________.

--- Content provided by⁠ FirstRanker.com ---

F2

F1

R

Q.10 A single degree of freedom mass-spring-viscous damper system with mass m, spring constant k and

viscous damping coefficient q is critically damped. The correct relation among m, k, and q is

--- Content provided by‌ FirstRanker.com ---

(A) q = v2 ? ? (B) q = 2v? ? (C) q = 2 v

?

?

(D) q = 2 v

?

--- Content provided by⁠ FirstRanker.com ---

?

Q.11 A machine element XY, fixed at end X, is subjected to an axial load P, transverse load F, and a

twisting moment T at its free end Y. The most critical point from the strength point of view is

X

F

--- Content provided by⁠ FirstRanker.com ---

T

P

Y

(A) a point on the circumference at location Y

(B) a point at the center at location Y

--- Content provided by‍ FirstRanker.com ---

(C) a point on the circumference at location X

(D) a point at the center at location X

ME (Set-2) FirstRanker.com

Firstranker's choice FirstRanker.com

GATE 2016 FirstRanker.com

--- Content provided by⁠ FirstRanker.com ---

Q.12 For the brake shown in the figure, which one of the following is TRUE?

Brake shoe

Brake drum

F

(A) Self energizing for clockwise rotation of the drum

--- Content provided by‌ FirstRanker.com ---

(B) Self energizing for anti-clockwise rotation of the drum

(C) Self energizing for rotation in either direction of the drum

(D) Not of the self energizing type

Q.13 The volumetric flow rate (per unit depth) between two streamlines having stream functions ?1 and

?2 is

--- Content provided by FirstRanker.com ---

(A) | ?1+?2 | (B) ?1?2 (C) ?1/?2 (D) | ?1-?2 |

Q.14 Assuming constant temperature condition and air to be an ideal gas, the variation in atmospheric

pressure with height calculated from fluid statics is

(A) linear (B) exponential (C) quadratic (D) cubic

Q.15 A hollow cylinder has length L, inner radius r1, outer radius r2, and thermal conductivity k. The

--- Content provided by‌ FirstRanker.com ---

thermal resistance of the cylinder for radial conduction is

ln(?2/?1)

(A)

2?

ln(?1/?2)

--- Content provided by⁠ FirstRanker.com ---

(B)

2?

(C)

2?

ln(?2/?1)

--- Content provided by‌ FirstRanker.com ---

(D)

2?

ln(?1/?2)

Q.16 Consider the radiation heat exchange inside an annulus between two very long concentric cylinders.

The radius of the outer cylinder is Ro and that of the inner cylinder is Ri. The radiation view factor

--- Content provided by⁠ FirstRanker.com ---

of the outer cylinder onto itself is

Ri

(A) 1 -

?

Ri

--- Content provided by‍ FirstRanker.com ---

(B) 1 - v

?

1

(C) 1 - (?/? ) 3

Ri

--- Content provided by⁠ FirstRanker.com ---

(D) 1 -

?

Q.17 The internal energy of an ideal gas is a function of

(A) temperature and pressure

(B) volume and pressure

--- Content provided by⁠ FirstRanker.com ---

(C) entropy and pressure

(D) temperature only

Q.18 The heat removal rate from a refrigerated space and the power input to the compressor are 7.2 kW

and 1.8 kW, respectively. The coefficient of performance (COP) of the refrigerator is ______.

ME (Set-2) FirstRanker.com

--- Content provided by⁠ FirstRanker.com ---

Firstranker's choice FirstRanker.com

GATE 2016 FirstRanker.com

Q.19 Consider a simple gas turbine (Brayton) cycle and a gas turbine cycle with perfect regeneration. In

both the cycles, the pressure ratio is 6 and the ratio of the specific heats of the working medium is

1.4. The ratio of minimum to maximum temperatures is 0.3 (with temperatures expressed in K) in

--- Content provided by‌ FirstRanker.com ---

the regenerative cycle. The ratio of the thermal efficiency of the simple cycle to that of the

regenerative cycle is __________.

Q.20 In a single-channel queuing model, the customer arrival rate is 12 per hour and the serving rate is

24 per hour. The expected time that a customer is in queue is __________ minutes.

Q.21 In the phase diagram shown in the figure, four samples of the same composition are heated to

--- Content provided by​ FirstRanker.com ---

temperatures marked by a, b, c and d.

700

650

L

a + L

--- Content provided by⁠ FirstRanker.com ---

600

c

a

Temperature (Arbitrary Units)

550

--- Content provided by‍ FirstRanker.com ---

b

a+ß

500

a

450

--- Content provided by‍ FirstRanker.com ---

0

5

10

15

Composition (Arbitrary Units)

--- Content provided by⁠ FirstRanker.com ---

At which temperature will a sample get solutionized the fastest?

(A) a (B) b (C) c (D) d

Q.22 The welding process which uses a blanket of fusible granular flux is

(A) tungsten inert gas welding (B) submerged arc welding

(C) electroslag welding (D) thermit welding

--- Content provided by‍ FirstRanker.com ---

Q.23 The value of true strain produced in compressing a cylinder to half its original length is

(A) 0.69 (B) -0.69 (C) 0.5 (D) -0.5

Q.24 The following data is applicable for a turning operation. The length of job is 900 mm, diameter of

job is 200 mm, feed rate is 0.25 mm/rev and optimum cutting speed is 300 m/min. The machining

time (in min) is __________.

--- Content provided by‌ FirstRanker.com ---

ME (Set-2) FirstRanker.com

Firstranker's choice FirstRanker.com

GATE 2016 FirstRanker.com

Q.25 In an ultrasonic machining (USM) process, the material removal rate (MRR) is plotted as a function

of the feed force of the USM tool. With increasing feed force, the MRR exhibits the following

--- Content provided by‍ FirstRanker.com ---

behavior:

(A) increases linearly

(B) decreases linearly

(C) does not change

(D) first increases and then decreases

--- Content provided by⁠ FirstRanker.com ---

Q. 26 – Q. 55 carry two marks each.

Q.26 A scalar potential f has the following gradient: ?f = yzî + xzj + xyk . Consider the integral

?C ?f. dr on the curve r = xî + yj + zk.

The curve C is parameterized as follows:

{? = t

--- Content provided by‍ FirstRanker.com ---

? = t² and 1 = t = 3.

? = 3t²

The value of the integral is _______.

Q.27 The value of ?G

3 ?-5

--- Content provided by‍ FirstRanker.com ---

(?-1) (?-2)

? along a closed path G is equal to (4 pi), where z = x + iy and ? = v–1. The correct path G is (A) y (B) y 2 G X 2 G X 1 1 (C) y (D) y 2 G X 2 G X 1 1 Q.28 The probability that a screw manufactured by a company is defective is 0.1. The company sells screws in packets containing 5 screws and gives a guarantee of replacement if one or more screws in the packet are found to be defective. The probability that a packet would have to be replaced is _________. ME (Set-2) FirstRanker.com Firstranker's choice FirstRanker.com GATE 2016 FirstRanker.com Q.29 The error in numerically computing the integral 0 p 2 (sin ? + cos ?) dx using the trapezoidal rule with three intervals of equal length between 0 and p is __________. Q.30 A mass of 2000 kg is currently being lowered at a velocity of 2 m/s from the drum as shown in the figure. The mass moment of inertia of the drum is 150 kg-m². On applying the brake, the mass is brought to rest in a distance of 0.5 m. The energy absorbed by the brake (in kJ) is _________. 2 m 2 m/s 2000 kg Q.31 A system of particles in motion has mass center G as shown in the figure. The particle i has mass mi and its position with respect to a fixed point O is given by the position vector ri. The position of the particle with respect to G is given by the vector ?i. The time rate of change of the angular momentum of the system of particles about G is (The quantity ?i indicates second derivative of ?i with respect to time and likewise for ri). System boundary G mi Pi ri (A) Siri × mi?i (B) Si?i × mi?i (C) Siri × miri (D) Si?i × mi?i ME (Set-2) FirstRanker.com Firstranker's choice FirstRanker.com GATE 2016 FirstRanker.com Q.32 A rigid horizontal rod of length 2L is fixed to a circular cylinder of radius R as shown in the figure. Vertical forces of magnitude P are applied at the two ends as shown in the figure. The shear modulus for the cylinder is G and the Young's modulus is E. P L R L 1P * L A The vertical deflection at point A is (A) PL³/(pR4G) (B) PL³/(pR4E) (C) 2PL³/(pR4E) (D) 4PL3/(pR4G) Q.33 A simply supported beam of length 2L is subjected to a moment M at the mid-point x = 0 as shown in the figure. The deflection in the domain 0 = x = L is given by ? = -? 12 ? (? - ?)(? + ?), where E is the Young's modulus, I is the area moment of inertia and c is a constant (to be determined). ? L L X The slope at the center x = 0 is (A) ML/(2EI) (B) ML/(3EI) (C) ML/(6EI) (D) ML/(12EI) ME (Set-2) FirstRanker.com Firstranker's choice FirstRanker.com GATE 2016 FirstRanker.com Q.34 In the figure, the load P = 1 N, length L = 1 m, Young's modulus E = 70 GPa, and the cross-section of the links is a square with dimension 10 mm × 10 mm. All joints are pin joints. C L 45° B 45° P L A The stress (in Pa) in the link AB is __________. (Indicate compressive stress by a negative sign and tensile stress by a positive sign.) Q.35 A circular metallic rod of length 250 mm is placed between two rigid immovable walls as shown in the figure. The rod is in perfect contact with the wall on the left side and there is a gap of 0.2 mm between the rod and the wall on the right side. If the temperature of the rod is increased by 200° C, the axial stress developed in the rod is _________ MPa. Young's modulus of the material of the rod is 200 GPa and the coefficient of thermal expansion is 10-5 per °C. 250 mm -0.2 mm ME (Set-2) FirstRanker.com Firstranker's choice FirstRanker.com GATE 2016 FirstRanker.com Q.36 The rod AB, of length 1 m, shown in the figure is connected to two sliders at each end through pins. The sliders can slide along QP and QR. If the velocity VA of the slider at A is 2 m/s, the velocity of the midpoint of the rod at this instant is __________ m/s. VA A P 360° 60° R B Q Q.37 The system shown in the figure consists of block A of mass 5 kg connected to a spring through a massless rope passing over pulley B of radius r and mass 20 kg. The spring constant k is 1500 N/m. If there is no slipping of the rope over the pulley, the natural frequency of the system is __________ rad/s. k r B A Q.38 In a structural member under fatigue loading, the minimum and maximum stresses developed at the critical point are 50 MPa and 150 MPa, respectively. The endurance, yield, and the ultimate strengths of the material are 200 MPa, 300 MPa and 400 MPa, respectively. The factor of safety using modified Goodman criterion is (A) 3 2 (B) 8 5 (C) 12 7 (D) 2 ME (Set-2) FirstRanker.com FirstRanker.com GATE 2016 SET - 2 Mechanical Engineering (ME) ME (Set -2) 10 /14 Q.39 The large vessel shown in the figure contains oil and water. A body is submerged at the interface of oil and water such that 45 percent of its volume is in oil while the rest is in water. The density of the body is _________ kg/m 3 . The specific gravity of oil is 0.7 and density of water is 1000 kg/m 3 . Acceleration due to gravity g = 10 m/s 2 . Q.40 Consider fluid flow between two infinite horizontal plates which are parallel (the gap between them being 50 mm). The top plate is sliding parallel to the stationary bottom plate at a speed of 3 m/s. The flow between the plates is solely due to the motion of the top plate. The force per unit area (magnitude) required to maintain the bottom plate stationary is _________ N/m 2 . Viscosity of the fluid µ = 0.44 kg/m -s and density ? = 888 kg/m 3 . FirstRanker.com FirstRanker.com FirstRanker.com Firstranker's choice FirstRanker.com GATE 2016 FirstRanker.com Q.41 Consider a frictionless, massless and leak-proof plug blocking a rectangular hole of dimensions 2R × L at the bottom of an open tank as shown in the figure. The head of the plug has the shape of a semi-cylinder of radius R. The tank is filled with a liquid of density ? up to the tip of the plug. The gravitational acceleration is g. Neglect the effect of the atmospheric pressure. R R A F Sectional view A-A The force F required to hold the plug in its position is (A) 2?²? (1 - p 4 ) (C) ?²? A: F (B) 2?²? (1 + p 4 ) (D) ?²? gl Q.42 Consider a parallel-flow heat exchanger with area ?p and a counter-flow heat exchanger with area ?c. In both the heat exchangers, the hot stream flowing at 1 kg/s cools from 80 °C to 50 °C. For the cold stream in both the heat exchangers, the flow rate and the inlet temperature are 2 kg/s and 10 °C, respectively. The hot and cold streams in both the heat exchangers are of the same fluid. Also, both the heat exchangers have the same overall heat transfer coefficient. The ratio ?c/?p is __________. Q.43 Two cylindrical shafts A and B at the same initial temperature are simultaneously placed in a furnace. The surfaces of the shafts remain at the furnace gas temperature at all times after they are introduced into the furnace. The temperature variation in the axial direction of the shafts can be assumed to be negligible. The data related to shafts A and B is given in the following Table. Quantity Diameter (m) Thermal conductivity (W/m-K) Volumetric heat capacity (J/m³-K) Shaft A 0.4 40 2×106 Shaft B 0.1 20 2×106 The temperature at the centerline of the shaft A reaches 400 °C after two hours. The time required (in hours) for the centerline of the shaft B to attain the temperature of 400 °C is __________. Q.44 A piston-cylinder device initially contains 0.4 m³ of air (to be treated as an ideal gas) at 100 kPa and 80 °C. The air is now isothermally compressed to 0.1 m³. The work done during this process is _________ kJ. (Take the sign convention such that work done on the system is negative) Q.45 A reversible cycle receives 40 kJ of heat from one heat source at a temperature of 127 °C and 37 kJ from another heat source at 97 °C. The heat rejected (in kJ) to the heat sink at 47 °C is __________. ME (Set-2) FirstRanker.com Firstranker's choice FirstRanker.com GATE 2016 FirstRanker.com Q.46 A refrigerator uses R-134a as its refrigerant and operates on an ideal vapour-compression refrigeration cycle between 0.14 MPa and 0.8 MPa. If the mass flow rate of the refrigerant is 0.05 kg/s, the rate of heat rejection to the environment is _________ kW. Given data: At P = 0.14 MPa, h = 236.04 kJ/kg, s=0.9322 kJ/kg-K At P = 0.8 MPa, h = 272.05kJ/kg (superheated vapour) At P = 0.8 MPa, h =93.42kJ/kg (saturated liquid) Q.47 The partial pressure of water vapour in a moist air sample of relative humidity 70% is 1.6 kPa, the total pressure being 101.325 kPa. Moist air may be treated as an ideal gas mixture of water vapour and dry air. The relation between saturation temperature (Ts in K) and saturation pressure (ps in kPa) for water is given by ln(ps /po) = 14.317 – 5304/Ts, where p? = 101.325 kPa. The dry bulb temperature of the moist air sample (in °C) is __________. Q.48 In a binary system of A and B, a liquid of 20% A (80% B) is coexisting with a solid of 70% A (30% B). For an overall composition having 40% A, the fraction of solid is (A) 0.40 (B) 0.50 (C) 0.60 (D) 0.75 Q.49 Gray cast iron blocks of size 100 mm × 50 mm × 10 mm with a central spherical cavity of diameter 4 mm are sand cast. The shrinkage allowance for the pattern is 3%. The ratio of the volume of the pattern to volume of the casting is __________. Q.50 The voltage-length characteristic of a direct current arc in an arc welding process is V = (100 + 40l), where l is the length of the arc in mm and V is arc voltage in volts. During a welding operation, the arc length varies between 1 and 2 mm and the welding current is in the range 200-250 A. Assuming a linear power source, the short circuit current is __________ A. Q.51 For a certain job, the cost of metal cutting is Rs. 18C/V and the cost of tooling is Rs. 270C/(TV), where C is a constant, V is the cutting speed in m/min and T is the tool life in minutes. The Taylor's tool life equation is VT0.25 = 150. The cutting speed (in m/min) for the minimum total cost is __________. ME (Set-2) FirstRanker.com Firstranker's choice FirstRanker.com GATE 2016 FirstRanker.com Q.52 The surface irregularities of electrodes used in an electrochemical machining (ECM) process are 3 µm and 6 µm as shown in the figure. If the work-piece is of pure iron and 12V DC is applied between the electrodes, the largest feed rate is __________ mm/min. Conductivity of the electrolyte 0.02 ohm-1mm-1 Over-potential voltage 1.5 V Density of iron 7860 kg/m3 Atomic weight of iron 55.85 gm Assume the iron to be dissolved as Fe+2 and the Faraday constant to be 96500 Coulomb. Tool 6 µm Nominal Gap Work-piece (Iron) 3 µm Q.53 For the situation shown in the figure below the expression for H in terms of r, R and D is R D 4 r H (A) H = D + vr2 + R2 (B) H = (R + r) + (D + r) (C) H = (R + r) + vD2 - R2 (D) H = (R + r) + 2?(? + ?) - ?2 Q.54 A food processing company uses 25,000 kg of corn flour every year. The quantity-discount price of corn flour is provided in the table below: Quantity (kg) Unit price (Rs/kg) 1-749 70 750-1499 65 1500 and above 60 The order processing charges are Rs. 500/order. The handling plus carry-over charge on an annual basis is 20% of the purchase price of the corn flour per kg. The optimal order quantity (in kg) is __________. ME (Set-2) FirstRanker.com Firstranker's choice FirstRanker.com GATE 2016 FirstRanker.com Q.55 A project consists of 14 activities, A to N. The duration of these activities (in days) are shown in brackets on the network diagram. The latest finish time (in days) for node 10 is ___________. 3 E(4) 10 J(2) M(3) B(3) 6 8 K(3) F(2) L(2) N(2) A(2) C(4) 9 11 12 1 2 4 G(4) I(5) D(2) 7 H(4) 5 END OF THE QUESTION PAPER ME (Set-2) FirstRanker.com


--- Content provided by‌ FirstRanker.com ---

This download link is referred from the post: GATE Previous Last 10 Years 2010-2020 Question Papers With Solutions And Answer Keys