GATE MT 2024 Paper 1 — page 14

Questions 40–42 of 65. Imported answers require review unless explicitly marked reviewed.

In a cubic lattice, what is the ratio of interplanar spacings of the (100), (110) and (111) planes? (Round off to two decimal places)

Your answerChoose one option.

1 : 0.32 : 0.71

1 : 0.71 : 0.58

1 : 0.58 : 0.71

1 : 0.58 : 0.32

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The constitutional undercooling condition for a hypothetical binary alloy of A with solute B during solidification is shown in the figure along with its binary phase diagram. Based on these two schematics, one can conclude that the solute concentration in region X will be __________ the average composition of the initial liquid phase.

Diagram for Metallurgical Engineering question 41

Your answerChoose one option.

less than

greater than

same as

independent of

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The microstructures of a quenched steel tempered at three temperatures

for a fixed time are schematically illustrated. The solid circles represent cementite particles in ferrite matrix;

and

are average radii of cementite particles, and

and

are volume fractions of cementite at temperatures

and

, respectively. If the cementite in steel is more noble than ferrite, then which one of the three microstructures will have the highest corrosion rate when exposed to an aqueous solution of 3.5 wt. % NaCl?

Diagram for Metallurgical Engineering question 42

Your answerChoose one option.

Microstructure at

Independent of microstructure

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2024 · Paper 1

Question 40

Question 41

Question 42