GATE MT 2013 Question Paper With Solution - Askmemetallurgy

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Asked: March 22, 2020In: Physical Metallurgy & Heat treatment

GATE MT 2013 Q55. Energy (in J/m) of the dislocation is

Poll Results

25%(A) 0.5 × 10^-9 ( 1 voter )

25%(B) 1.1 × 10^-9 ( 1 voter )

50%(C) 2.2 × 10^-9 ( 2 voters )

0%(D) 4.4 × 10^-9

Based On 4 Votes

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Asked: March 22, 2020

GATE MT 2013 Q54. Statement for Linked Answer Questions 54 and 55: An edge dislocation is present in α-Fe. Atomic diameter of iron atom is 0.25 nm and its shear modulus is 70 GPa. Modulus of the Burgers vector (in nm) is

Poll Results

25%(A) 0.125 ( 2 voters )

50%(B) 0.25 ( 4 voters )

25%(C) 0.50 ( 2 voters )

0%(D) 0.625

Based On 8 Votes

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Asked: March 22, 2020In: Physical Metallurgy & Heat treatment

GATE MT 2013 Q53.The percent crystallinity of polypropylene sample having a density of 1.3 g/cm3 is

Poll Results

0%(A) 54

100%(B) 64 ( 4 voters )

0%(C) 74

0%(D) 84

Based On 4 Votes

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Asked: March 22, 2020In: Physical Metallurgy & Heat treatment

GATE MT 2013 Q52. Statement for Linked Answer Questions 52 and 53: The density and associated crystallinity for two polypropylene samples are as follows: Density of totally amorphous polypropylene is___.

Poll Results

0%(A) 0.64

0%(B) 0.74

25%(C) 0.84 ( 1 voter )

75%(D) 0.94 ( 3 voters )

Based On 4 Votes

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GATE MT 2013 Q52. Statement for Linked Answer Questions 52 and 53: The density and associated crystallinity for two polypropylene samples are as follows: Density of totally amorphous polypropylene is___.

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Asked: March 22, 2020In: Thermodynamics & Rate Processes

GATE MT 2013 Q51. Assuming regular solution behaviour, the solution parameter (in J/mol) is

Poll Results

100%(A) -19250 ( 8 voters )

0%(B) -9625

0%(C) 13.75

0%(D) 2315.4

Based On 8 Votes

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Asked: March 22, 2020In: Thermodynamics & Rate Processes

GATE MT 2013 Q50. Common Data for Questions 50 and 51: Integral enthalpy of mixing (in J/mol) of liquid (Cu, Zn) solution can be approximated by ΔHm(mix)= -19250xcu xzn. The corresponding partial molar enthalpy of mixing (in J/mol) for Cu is

Poll Results

0%(A)

25%(B) ( 2 voters )

12.5%(C) ( 1 voter )

62.5%(D) ( 5 voters )

Based On 8 Votes

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GATE MT 2013 Q50. Common Data for Questions 50 and 51: Integral enthalpy of mixing (in J/mol) of liquid (Cu, Zn) solution can be approximated by ΔHm(mix)= -19250xcu xzn. The corresponding partial molar enthalpy of mixing (in J/mol) for Cu is

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Asked: March 22, 2020In: Physical Metallurgy & Heat treatment

GATE MT 2013 Q49. How long (in h) will it take to double the depth at which 0.4 wt.% C is reached?

Poll Results

50%(A) 40 ( 1 voter )

50%(B) 20 ( 1 voter )

0%(C) 18

0%(D) 14

Based On 2 Votes

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Asked: March 22, 2020In: Physical Metallurgy & Heat treatment

GATE MT 2013 Q48. Common Data for Questions 48 and 49: A steel specimen containing 0.2 wt.% C is carburized in an atmosphere that maintains a carbon content of 1.2 wt.% C at the surface of the specimen. Given: For carbon diffusion in austenite: D0=2.0×10-5 m2 /s Activation energy for diffusion, Q=142 kJ/mol . What is the depth (in m) from the surface of the specimen at which a composition of 0.4 wt.% C is obtained after carburizing at 870°C for 10 h?

Poll Results

0%(A) 15

20%(B) 84 ( 1 voter )

40%(C) 113 ( 2 voters )

40%(D) 875 ( 2 voters )

Based On 5 Votes

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GATE MT 2013 Q48. Common Data for Questions 48 and 49: A steel specimen containing 0.2 wt.% C is carburized in an atmosphere that maintains a carbon content of 1.2 wt.% C at the surface of the specimen. Given: For carbon diffusion in austenite: D0=2.0×10-5 m2 /s Activation energy for diffusion, Q=142 kJ/mol . What is the depth (in m) from the surface of the specimen at which a composition of 0.4 wt.% C is obtained after carburizing at 870°C for 10 h?

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Asked: March 22, 2020In: Iron & Steel Making

GATE MT 2013 Q47. Ladle deoxidation of liquid steel is done at 1600°C by adding ferro-aluminium. By assuming Stokes law behaviour, time (in s) required for alumina particles of 50 μm diameter to float to the surface from a depth of 2 m would be__________ [Given: density of steel = 7000 kg/m3 , density of alumina = 3650 kg/m3 , viscosity of steel =6×10-3 kg/m/s]

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Asked: March 22, 2020In: Mechanical Metallurgy

GATE MT 2013 Q46. The critical internal crack length (in mm) in a steel having KIc of 45 MPa√m to support a Mode-I stress of 400 MPa is __________

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Asked: March 22, 2020In: Mineral Processing & Non-ferrous Metallurgy

GATE MT 2013 Q43. The aperture size (in μm) of a 200 mesh sieve having a wire diameter of 53 µm is __________

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Asked: March 22, 2020In: Mineral Processing & Non-ferrous Metallurgy

GATE MT 2013 Q42. Determine the correctness or otherwise of the following Assertion (a) and Reason (r). Assertion: For the extraction of metal values from their sulphide concentrates by hydrometallurgical route, leaching with oxygen under high pressure is used. Reason: Presence of oxygen under high pressure causes roasting of sulphides, which helps in leaching of the values.

Poll Results

10%(A) a is true but r is false ( 1 voter )

20%(B) a is false but r is true ( 2 voters )

70%(C) both a and r are true, and r is the reason for a ( 7 voters )

0%(D) both a and r are true, but r is not the reason for a

Based On 10 Votes

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Asked: March 22, 2020In: Mineral Processing & Non-ferrous Metallurgy

GATE MT 2013 Q41. Match the unit operation in Group I with its corresponding principle in Group II:

Poll Results

58.33%(A) P-3, Q-4, R-2, S-1 ( 7 voters )

8.33%(B) P-2, Q-3, R-1, S-4 ( 1 voter )

25%(C) P-4, Q-2, R-3, S-1 ( 3 voters )

8.33%(D) P-1, Q-3, R-2, S-4 ( 1 voter )

Based On 12 Votes

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GATE MT 2013 Q41. Match the unit operation in Group I with its corresponding principle in Group II:

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Asked: March 22, 2020In: Thermodynamics & Rate Processes

GATE MT 2013 Q40.

Poll Results

75%(A) Sn undergoes oxidation ( 3 voters )

0%(B) H+ undergoes reduction

25%(C) Sn2+ undergoes reduction ( 1 voter )

0%(D) No net reaction

Based On 4 Votes

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For the following electrochemical reaction Sn + 2H+ = Sn2+ + H2, if the solution has Sn2+ concentration 10-2 M and pH 5 at 298 K, which of the following is true? Given: standard reduction potential for Sn2+ + ...Read more

For the following electrochemical reaction Sn + 2H+ = Sn2+ + H2, if the solution has Sn2+ concentration 10^-2 M and pH 5 at 298 K, which of the following is true? Given: standard reduction potential for Sn2+ + 2e^– →Sn is -0.136 V versus SHE; H 2 p = 1 atm

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Asked: March 21, 2020In: DT & NDT

GATE MT 2013 Q39. Match the suitability of non-destructive testing method in Group I for the detection of defects listed in Group II

Poll Results

12.5%(A) P-2, Q-4, R-3, S-1 ( 1 voter )

0%(B) P-4, Q-2, R-1, S-3

0%(C) P-3, Q-1, R-2, S-4

87.5%(D) P-1, Q-4, R-2, S-3 ( 7 voters )

Based On 8 Votes

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GATE MT 2013 Q39. Match the suitability of non-destructive testing method in Group I for the detection of defects listed in Group II

Askmemetallurgy Official

Asked: March 21, 2020In: Physical Metallurgy & Heat treatment

GATE MT 2013 Q38. Match the powder production technique given in Group I with the corresponding shape listed in Group II

Poll Results

73.53%(A) P-2, Q-4, R-1, S-3 ( 25 voters )

5.88%(B) P-1, Q-3, R-2, S-4 ( 2 voters )

11.76%(C) P-2, Q-3, R-4, S-1 ( 4 voters )

8.82%(D) P-3, Q-2, R-1, S-4 ( 3 voters )

Based On 34 Votes

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GATE MT 2013 Q38. Match the powder production technique given in Group I with the corresponding shape listed in Group II

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Asked: March 21, 2020In: Metal Working (Forming)

GATE MT 2013 Q37. Match the defects listed in Group I with the corresponding manufacturing process listed in Group II

Poll Results

35.71%(A) P-1, Q-2, R-4, S-3 ( 5 voters )

7.14%(B) P-2, Q-3, R-1, S-4 ( 1 voter )

7.14%(C) P-3, Q-4, R-2, S-1 ( 1 voter )

50%(D) P-2, Q-1, R-4, S-3 ( 7 voters )

Based On 14 Votes

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GATE MT 2013 Q37. Match the defects listed in Group I with the corresponding manufacturing process listed in Group II

Askmemetallurgy Official

Asked: March 21, 2020In: Metal Working (Forming)

GATE MT 2013 Q36. A 480 mm thick slab is hot-rolled using a roll of 720 mm diameter. For a coefficient of friction of 0.5, the maximum possible reduction (in mm) is

Poll Results

87.5%(A) 90 ( 7 voters )

12.5%(B) 180 ( 1 voter )

0%(C) 240

0%(D) 360

Based On 8 Votes

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Asked: March 21, 2020In: Physical Metallurgy & Heat treatment

GATE MT 2013 Q35. Saturation magnetization of an FCC metal with lattice parameter 0.2 nm is 600 kA/m. The net magnetic moment per atom is given by (in Bohr magneton)

Poll Results

14.29%(A) 8.08 × 10^57 ( 1 voter )

28.57%(B) 2.02 × 1057 ( 2 voters )

0%(C) 0.517

57.14%(D) 0.129 ( 4 voters )

Based On 7 Votes

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Asked: March 21, 2020In: Mechanical Metallurgy

GATE MT 2013 Q34. In a brittle material, the maximum internal crack length is 8 µm. If Young’s modulus is 400 GPa and surface energy is 3.14 J/m2 , the estimated theoretical fracture strength (in MPa) is

Poll Results

0%(A) 375

13.33%(B) 412 ( 2 voters )

6.67%(C) 327 ( 1 voter )

80%(D) 447 ( 12 voters )

Based On 15 Votes

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Asked: March 21, 2020In: Physical Metallurgy & Heat treatment

GATE MT 2013 Q33. The yield strength of a polycrystalline metal increases from 100 MPa to 145 MPa on decreasing the grain size from 64 µm to 25 µm. The yield strength of this metal (in MPa) having a grain size of 36 µm is

Poll Results

8%(A) 110 ( 2 voters )

72%(B) 125 ( 18 voters )

12%(C) 140 ( 3 voters )

8%(D) 165 ( 2 voters )

Based On 25 Votes

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Asked: March 21, 2020In: Mineral Processing & Non-ferrous Metallurgy

GATE MT 2013 Q32. Match the metal in Group I with its corresponding ore in Group II.

Poll Results

16.67%(A) P-1, Q-3, R-4, S-2 ( 2 voters )

8.33%(B) P-4, Q-2, R-3, S-1 ( 1 voter )

75%(C) P-3, Q-1, R-4, S-2 ( 9 voters )

0%(D) P-2, Q-3, R-1, S-4

Based On 12 Votes

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GATE MT 2013 Q32. Match the metal in Group I with its corresponding ore in Group II.

Askmemetallurgy Official

Asked: March 21, 2020In: Physical Metallurgy & Heat treatment

GATE MT 2013 Q30. For an FCC metal, the ratio of interplanar spacing obtained from the first two peaks of the X-ray diffraction pattern is

Poll Results

0%(A) 1.91

18.18%(B) 1.63 ( 2 voters )

9.09%(C) 1.41 ( 1 voter )

72.73%(D) 1.15 ( 8 voters )

Based On 11 Votes

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Asked: March 21, 2020In: Physical Metallurgy & Heat treatment

GATE MT 2013 Q29. A unit cell of an element has maximum linear density along the [110] direction. The packing density of its (100) plane is

Poll Results

13.04%(A) 0.68 ( 9 voters )

34.78%(B) 0.74 ( 24 voters )

49.28%(C) 0.79 ( 34 voters )

2.9%(D) 0.91 ( 2 voters )

Based On 69 Votes

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Asked: March 21, 2020In: Welding Technology

GATE MT 2013 Q25. Arc welding is done using current, voltage and welding speed of 200 A, 20 V and 0.01 m/s, respectively. The heat input in kJ per unit length is _________

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