GATE MT topic:metallurgy PYQs & Answers — Page 24

Questions 231–240 of 650. Imported answers require independent review unless marked reviewed.

Taking S as entropy, T as temperature, P as pressure, and V as volume, match Column I with Column II.

Column I (A) Gibbs Free Energy (B) Helmholtz Free Energy (C) Enthalpy (D) Internal Energy

Column II (1) depends on T, V and composition (2) depends on T, P and composition (3) depends on S, P and composition (4) depends on S, V and composition

Your answerChoose one option.

A – 2, B – 1, C – 3, D – 4

A – 4, B – 3, C – 2, D – 1

A – 3, B – 1, C – 4, D – 2

A – 2, B – 1, C – 4, D – 3

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Match the transport processes in Column I with the relationships in Column II.

Column I (P) Molecular momentum transport (Q) Molecular mass transport (R) Molecular energy transport (S) Radiation energy transport

Column II (1) Stefan-Boltzmann law (2) Newton’s law of viscosity (3) Fick’s law (4) Fourier law

Your answerChoose one option.

P – 2, Q – 3, R – 4, S – 1

P – 4, Q – 3, R – 2, S – 1

P – 3, Q – 1, R – 4, S – 2

P – 2, Q – 1, R – 4, S – 3

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For supersonic O

jet in basic oxygen furnace steelmaking, choose the correct combination from the following:

(1) Converging-diverging nozzle (2) Diverging-converging nozzle (3) O

velocity greater than sound velocity at nozzle throat (Mach number > 1) (4) O

velocity equal to sound velocity at nozzle throat (Mach number = 1) (5) Exit O

jet pressure ≥ atmospheric pressure (6) Exit O

jet pressure < atmospheric pressure

Your answerChoose one option.

(1), (4), (5)

(1), (3), (6)

(2), (3), (5)

(2), (4), (5)

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Elutriator is used to separate particles based on their sizes in flowing air as shown in the figure.

Diagram for Metallurgical Engineering question 39

Assuming spherical particles, the diameter (D

) of the suspended particles which have 50% chance to report to overflow by turbulent air flow is expressed as

Your answerChoose one option.

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A fluid flow field is given by the velocity vector

. The curl of velocity at (1, 2, 3) is

Your answerChoose one option.

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Given,

. S is a surface bounded by the planes

, and

. If

is the unit vector normal to S, then

Your answerChoose one option.

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Match the processes in Column I with the corresponding applications in Column II.

Column I (P) Fused salt electrolysis (Q) Carbothermal reduction (R) Oxidation-refining (S) Matte converting

Column II (1) Ironmaking (2) Aluminium extraction (3) Copper extraction (4) Steelmaking

Your answerChoose one option.

P – 2, Q – 1, R – 4, S – 3

P – 4, Q – 3, R – 2, S – 1

P – 3, Q – 1, R – 4, S – 2

P – 2, Q – 4, R – 1, S – 3

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Match Column I with Column II.

Column I (P) Gallium arsenide (Q) Barium titanate (R) Iron - 4 wt.% silicon (S) Yttrium-barium-copper oxide

Column II (1) Superconductor (2) Soft magnetic material (3) Semiconductor (4) Piezoelectric material

Your answerChoose one option.

P – 3, Q – 4, R – 2, S – 1

P – 2, Q – 4, R – 3, S – 1

P – 3, Q – 2, R – 1, S – 4

P – 4, Q – 2, R – 1, S – 3

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Match the plots in Section I with the corresponding functions in Section II.

Section I: (P), (Q), (R), and (S) are the four plotted curves.

Diagram for Metallurgical Engineering question 44

Section II (1)

(2)

(3)

(4)

Your answerChoose one option.

P – 3, Q – 2, R – 4, S – 1

P – 2, Q – 3, R – 4, S – 1

P – 1, Q – 4, R – 3, S – 2

P – 2, Q – 3, R – 1, S – 4

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Match the components in Column I with corresponding manufacturing processes in Column II.

Column I (P) Crank shaft (Q) Machine bed (R) Automobile brake pad (S) Beverage can

Column II (1) Sheet metal forming (2) Forging (3) Casting (4) Powder metallurgy

Your answerChoose one option.

P – 2, Q – 3, R – 4, S – 1

P – 3, Q – 4, R – 1, S – 2

P – 4, Q – 1, R – 3, S – 2

P – 2, Q – 3, R – 1, S – 4

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GATE MT topic:metallurgy PYQs

Question 36

Question 37

Question 38

Question 39

Question 40

Question 41

Question 42

Question 43

Question 44

Question 45