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Metallurgical Engineering - MT 2012 GATE Paper (Practice Test)


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65 Questions MCQ Test GATE Past Year Papers for Practice (All Branches) | Metallurgical Engineering - MT 2012 GATE Paper (Practice Test)

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Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 1

Q. 1 – Q. 5 carry one mark each.

Which one of the following options is the closest in meaning to the word given below?

Latitude

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 2

Choose the most appropriate word from the options given below to complete the following sentence:

Given the seriousness of the situation that he had to face, his ___ was impressive.

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 3

Choose the most appropriate alternative from the options given below to complete the following sentence:

If the tired soldier wanted to lie down, he ___ the mattress out on the balcony.

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 4

If (1.001)1259 = 3.52 and (1.001)2062 = 7.85, then (1.001)3321 =

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 5

One of the parts (A, B, C, D) in the sentence given below contains an ERROR. Which one of the following is INCORRECT?
I requested that he should be given the driving test today instead of tomorrow.

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 6

Q. 6 - Q. 10 carry two marks each.
Q. The data given in the following table summarizes the monthly budget of an average household.

The approximate percentage of the monthly budget NOT spent on savings is

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 7

There are eight bags of rice looking alike, seven of which have equal weight and one is slightly heavier. The weighing balance is of unlimited capacity. Using this balance, the minimum number of weighings required to identify the heavier bag is

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 8

Raju has 14 currency notes in his pocket consisting of only Rs. 20 notes and Rs. 10 notes. The total money value of the notes is Rs. 230. The number of Rs. 10 notes that Raju has is

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 9

A and B are friends. They decide to meet between 1 PM and 2 PM on a given day. There is a condition that whoever arrives first will not wait for the other for more than 15 minutes. The probability that they will meet on that day is

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 10

One of the legacies of the Roman legions was discipline. In the legions, military law prevailed and discipline was brutal. Discipline on the battlefield kept units obedient, intact and fighting, even when the odds and conditions were against them.

Which one of the following statements best sums up the meaning of the above passage?

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 11

Useful Data
Universal gas constant R = 8.314 J/mol.K
Planck’s constant h = 6.63*10-34 J.s
Acceleration due to gravity g = 9.8 m/s2

Q. 11 – Q. 35 carry one mark each.

A is a 2 * 2 matrix with det A = 2. The det (2A) is

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 12

A is a 2 * 2 matrix given below:

The eigenvalues of A are

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 13

In a production facility, iron rods are made with a mean diameter of 6 cm and standard deviation of 0.02 cm. If a large number of rods are tested, the approximate percentage of rods whose sizes fall in the range of 5.98 cm to 6.02 cm is

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 14

Which one of the following methods is NOT used for numerical integration?

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 15

How many boundary conditions are required to solve the following equation?

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 16

When a zinc metal rod is immersed in dilute hydrochloric acid, it results in

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 17

A fluid is flowing with a velocity of 0.5 m/s on a plate moving with a velocity of 0.01 m/s in the same direction. The velocity at the interface of the fluid and plate is

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 18

Hot metal at 1700 K is poured in a sand mould that is open at the top. Heat loss from the liquid metal takes place by

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 19

Which one of the following is an equilibrium defect?

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 20

Floatation beneficiation is based on the principle of

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 21

Copper can be reduced from acidic copper sulphate solution by

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 22

Which one is NOT an agglomeration process?

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 23

During LD blow in steelmaking the impurity that gets removed first is

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 24

During the solidification of a pure metal, it was found that dendrites are formed. Assuming that the liquid-solid interface is at the melting temperature, the temperature from the interface into the liquid

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 25

A peak in the X-ray diffraction pattern is observed at 2θ = 78°, corresponding to {311} planes of an fcc metal, when the incident beam has a wavelength of 0.154 nm. The lattice parameter of the metal is approximately

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 26

If d is the inter-planar spacing of the planes {h k l}, the inter-planar spacing of the planes {nh nk nl}, n being an integer, is

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 27

As temperature increases, the electrical resistivities of pure metals (ρm) and intrinsic semiconductors (ρs) vary as follows

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 28

At equilibrium spacing in a crystalline solid, which of the following is true for net inter-atomic force (F) and potential energy (U)

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 29

The property of a material that CANNOT be significantly changed by heat treatment is

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 30

A unit dislocation splits into two partial dislocations. The correct combination of the Burgers vectors of the partial dislocations for a given unit dislocation having Burgers vector

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 31

A polymer matrix composite is reinforced with long continuous ceramic fibres aligned in one direction. The Young’s moduli of the matrix and fibres are Em and Ef respectively, and the volume fraction of the fibres is f. Assuming iso-stress condition, Young’s modulus of the composite EC in a direction perpendicular to the length of fibres, is given by the expression

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 32

Which of the following is NOT a fusion welding process?

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 33

Tungsten filament used in electric bulb is processed by

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 34

The riser is designed such that the melt in the riser solidifies

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 35

Radiography technique of detecting defects is based on the principle of

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 36

Q. 36 to Q. 65 carry two marks each.

At x = 0.5, the polynomial x2(1-x)2 has

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 37

Given that v is a vector field and f is a scalar field, match the equations in Group I with their physical meaning in Group II

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 38

The temperature field of a slab is given by T = 400 – 50z exp (–t – x2 – y2). The temperature gradient in y-direction is

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 39

What does the solution of the following ordinary differential equation represent?

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 40

A thin layer of material B (of total amount m) is plated on the end faces of two long rods of material A. These are then joined together on the plated side (see the figure below) and heated to a high temperature. Assuming the diffusion coefficient of B in A is D, the composition profile cB along the rod axis x after a time t is described by

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 41

Match the principles given in Group I with corresponding corrosion terminology in Group II

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 42

Identify the correct combination of the following statements

P. Hydrogen electrode is a standard used to measure redox potentials
Q. Activation polarization refers to electrochemical processes controlled by reaction sequence at metal-solution interface
R. Potential-pH diagrams can be used to predict corrosion rates of metals
S. Cathodic protection can use sacrificial anodes such as magnesium

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 43

Consider a reaction with activation energy of 8.314 kJ/mol that takes place at 300 K. If the reaction rate is to be tripled, the temperature of the reaction should be

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 44

Match the processes in Group I with the objectives in Group II

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 45

The reduction of FeO with CO gas in co-current flow is given by the following equation:

The ratio of pCO/pCO2 for this reaction at 1173 K is

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 46

The sulphide capacity (CS) of liquid slag of composition 55 wt.% CaO, 20 wt.% SiO2, 15 wt.% Al2O3, and 10 wt.% MgO is given by the following equation

where, X is mole fraction of the respective components. Atomic weights of Ca, Mg, Si, Al and O are 40, 24, 28, 27 and 16 respectively.

The value of CS at 1900 K is

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 47

Match the processes given in Group I with the corresponding metals in Group II

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 48

Identify the correct combination of the following statements

P. Bessemer converter can be used in copper smelting
Q. The Mond process for nickel involves reaction of metal with H2 gas
R. Roasted ZnS concentrates can be smelted in a blast furnace
S. Magnesium metal can be produced by electrolysis of sea water

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 49

Match the phases of steel in Group I with the crystal structures in Group II

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 50

Arrange the following in terms of increasing severity of quench

P. Oil quenching
Q. Water quenching
R. Water quenching with agitation
S. Brine quenching

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 51

Regarding recrystallization, which one of the following statements is NOT correct?

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 52

A liquid droplet (β) is on a substrate (δ) and is surrounded by air (α), as shown below. The angle of contact (θ) is determined using the following expression:

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 53

Match the phenomena listed in Group I with the possible mechanisms in Group II

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 54

Fracture stress for a brittle material having a crack length of 1 μm is 200 MPa. Fracture stress for the same material having a crack length of 4 μm is

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 55

The flow stress  of an alloy varies with strain rate  When the alloy is hot extruded from 10 cm diameter to 5 cm diameter at a speed of 2 cm/s, the flow stress is

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 56

Determine the correctness or otherwise of the following Assertion (a) and Reason (r).

Assertion : During rolling, front tension and (or) back tension are (is) employed to decrease rolling load.
Reason : Roll pressure decreases due to lowering of flow stress as a result of front tension/back tension.

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 57

Match the defects listed in Group I with the processes listed in Group II

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 58

Common Data Questions

Common Data for Questions 58 and 59:

A steel ball (density ρsteel = 7200 kg/m3) is placed in an upward moving liquid Al (density ρAl = 2360 kg/m3,
viscosity μAl = 1*10–3 Pa.s and Reynolds number = 5*105). The force (F) exerted on the steel ball is
expressed as

where, f is friction factor (=0.2), v is the velocity of liquid Al and R is the radius of steel ball.

The force exerted on the steel ball is

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 59

A steel ball (density ρsteel = 7200 kg/m3) is placed in an upward moving liquid Al (density ρAl = 2360 kg/m3,
viscosity μAl = 1*10–3 Pa.s and Reynolds number = 5*105). The force (F) exerted on the steel ball is
expressed as

where, f is friction factor (=0.2), v is the velocity of liquid Al and R is the radius of steel ball.

The terminal velocity of a fine spherical steel particle having diameter dp, in μm range, if allowed to fall in a quiescent liquid Al bath, is

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 60

Common Data for Questions 60 and 61:

For the above stress cycle

Stress ratio is

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 61

For the above stress cycle

Amplitude ratio is

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 62

Linked Answer Questions

Statement for Linked Answer Questions 62 and 63:

A material with grain size of ASTM No. 6 has a lattice frictional stress 100 MN/m2 and locking parameter
(Hall-Petch constant) 0.10 MN/m3/2

Grain size of the material is approximately

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 63

A material with grain size of ASTM No. 6 has a lattice frictional stress 100 MN/m2 and locking parameter
(Hall-Petch constant) 0.10 MN/m3/2

Yield strength of the material is approximately

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 64

Statement for Linked Answer Questions 64 and 65:

The strain hardening behaviour of an annealed rod during cold rolling is given by 

Flow stress after 50% reduction in area of the annealed rod on cold rolling is approximately

Metallurgical Engineering - MT 2012 GATE Paper (Practice Test) - Question 65

The strain hardening behaviour of an annealed rod during cold rolling is given by 

If a wire of 5 mm diameter is drawn from the above cold rolled rod of 10 mm diameter, the drawingstress, neglecting the effect of friction and redundant work, is approximately

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