GATE MT format:msq PYQs & Answers — Page 2

Questions 11–20 of 39. Imported answers require independent review unless marked reviewed.

Front tension is applied during cold rolling of a thin metal sheet. Which of the following statements is/are TRUE?

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The neutral point shifts towards the roll entrance.

The roll load is decreased.

The neutral point shifts towards the roll exit.

The rolling load is increased.

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Which of the following statements is/are CORRECT when Ni is added as an alloying element to a low alloy steel?

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Hardenability is increased AND the

temperature is lowered.

Hardenability is decreased AND the

temperature is lowered.

Hardenability is increased AND the

temperature is raised.

Hardenability is decreased AND the

temperature is raised.

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Which of the following statements is/are CORRECT with respect to fusion welding and solid-state welding of metals and alloys?

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Thermomechanically affected zone is found in the fusion welding of pure metals.

Partially melted zone is NOT found in the fusion welding of pure metal.

Diffusion bonding is one type of solid-state welding process.

Partially melted zone is found in the fusion welding of alloys with a large freezing range.

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Which of the following welding processes does NOT / do NOT utilize consumable electrode?

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Plasma arc welding

Gas metal arc welding

Shielded metal arc welding

Electron beam welding

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Which of the following statements is/are correct for a square matrix

with real number entries?

denotes the transpose of

and

denotes the inverse of

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is symmetric if

is skew-symmetric if

is orthogonal, then

is orthogonal, then its determinant is zero.

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Which of the following is/are criterion/criteria for equilibrium of an isolated system held at constant temperature and constant pressure?

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Entropy maximization

Entropy minimization

Maximization of Gibbs free energy

Minimization of Gibbs free energy

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Which of the following

reflections is/are allowed in X-ray diffraction pattern of a crystal with face centered cubic lattice?

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Which of the following statements is/are correct?

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Ultimate analysis of coal involves determination of moisture, volatile matter, fixed carbon and ash.

Reduction of wustite in blast furnace occurs at the lower part of the stack.

Roasting involves reduction of sulfide ores to pure metals.

White metal (impure Cu

S) is produced by oxidizing Fe and S during smelting of Cu-Fe matte.

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A creep test of a pure polycrystalline metal is performed in tension and the creep strain rate is observed to decrease during the primary stage. The creep mechanism is later determined to be dislocation-climb-controlled. The observed decrease in creep strain rate is/are due to

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an increase in dislocation density.

grain growth.

a decrease in the dislocation density.

an increase in the cross-sectional area of the sample.

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Which of the following statements is/are correct for joining processes?

(A) In case of soldering and brazing, the filler material has a melting point lower than that of the metals joined.

(B) In tungsten inert gas welding, tungsten is the filler material.

(D) The following reaction is associated with thermit welding:

Note:

stands for gas.

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In case of soldering and brazing, the filler material has a melting point lower than that of the metals joined.

In tungsten inert gas welding, tungsten is the filler material.

Friction welding is a solid-state joining process.

The following reaction is associated with thermit welding:

. Note:

stands for gas.

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GATE MT format:msq PYQs

Question 44

Question 45

Question 46

Question 47

Question 28

Question 29

Question 30

Question 47

Question 48

Question 49