GATE MT topic:materials-engineering PYQs & Answers — Page 5

Questions 41–50 of 650. Imported answers require independent review unless marked reviewed.

Match the unit operation in Column I with the resulting product in Column II:

Column I (P) COREX Process (Q) Bayer Process (R) Matte Smelting (S) MIDREX Process

Column II (1) Direct Reduced Iron (2) Pig Iron (3) Alumina (4) Copper

Your answerChoose one option.

P-4, Q-3, R-2, S-1

P-2, Q-3, R-4, S-1

P-1, Q-3, R-4, S-2

P-2, Q-4, R-3, S-1

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Match the terms in Column I with the corresponding attributes in Column II:

Column I (P) Wiedemann-Franz law (Q) Neel temperature (R) Hall voltage (S) Curie law

Column II (1) Charge carrier concentration (2) Paramagnetism (3) Ratio between thermal conductivity and electrical conductivity of metals (4) Diamagnetism (5) Anti-ferromagnetism

Your answerChoose one option.

P-4, Q-3, R-2, S-1

P-2, Q-5, R-1, S-3

P-3, Q-5, R-1, S-2

P-3, Q-4, R-5, S-2

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Choose the correct option(s).

Permeability of a porous bed made of spherical particles is/are:

Your answerSelect all correct options. You can choose more than one.

Independent of particle size

Increases with increase in particle size

Decreases with increase in particle size

Affected by particle size distribution

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Consider a distribution with the following probability density function

Given that the mean of the above probability distribution is 1, the variance (rounded off to two decimal places) is ________________.

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Taking number of intervals n = 3, the value of the integral

using Trapezoidal method, is ________________ (rounded off to two decimal places).

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Solution of the differential equation

where

. The value of

(answer in integer) is ________________

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Iron powder is compacted at room temperature to 75% of its theoretical density. The as-pressed iron compact is sintered in inert-gas atmosphere at 1200 °C to 90% of its theoretical density. Assuming isotropic shrinkage, the linear shrinkage (in percent) undergone by the iron compact during sintering (rounded off to one decimal place) is ________________ %

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An alloy having composition W-20 wt % Ni is prepared by mixing elemental powders. The resulting powder mixture is liquid phase sintered at 1550 °C for 1 hour. The liquid phase sintered microstructure consists of interconnected, spherical tungsten grains dispersed in nickel. The tungsten grain size is 70 μm and the W-Ni interparticle neck diameter is 35 μm. If W-Ni interface energy is 0.30 J/m², the W-W interfacial energy (in J/m²), rounded off to two decimal places is ________________

(Given: melting point of W: 3410 °C and melting point of Ni: 1455 °C)

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A metal having body-centered cubic structure is analyzed through X-ray diffraction using monochromatic X-ray of wavelength 0.154 nm. The diffraction angle (2θ) corresponding to {2 0 0} plane is 60° (for first order reflection).

The atomic radius of this element (rounded off to three decimal places) is ________________ nm.

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A cylindrical single crystal of copper having 10 mm diameter is deformed under a uniaxial tensile load of 2200 N. The angle between the normal to the slip plane and the tensile loading axis is α, whereas, the angle between slip direction and the tensile axis is β. The slip direction is in the plane defined by the stress axis and the normal to the slip plane.

If α = β, the critical resolved shear stress (CRSS), rounded off to one decimal place, is ______ MPa.

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GATE MT topic:materials-engineering PYQs

Question 41

Question 42

Question 43

Question 44

Question 45

Question 46

Question 47

Question 48

Question 49

Question 50