GATE MT topic:materials-science PYQs & Answers — Page 49

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topic:materials-science

Questions 481–490 of 650. Imported answers require independent review unless marked reviewed.

Topic practice 650 questionsPage 49 of 65

During low strain rate (≤ 0.1 per second) deformation of a metal at room temperature, the one that deforms by twinning mode is ____________.

Your answerChoose one option.

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In a tensile creep test of a metal, Nabarro-Herring mechanism is favored over Coble mechanism for ____________.

Your answerChoose one option.

larger grain size and lower temperature

smaller grain size and higher temperature

larger grain size and higher temperature

smaller grain size and lower temperature

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Beach marks are commonly observed on the fractured surfaces of metals after a ____________.

Your answerChoose one option.

Creep test

Fatigue test

Impact test

Compression test

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The length of internal cracks in two samples of the same glass is measured to be

and

. The ratio

of the fracture strength of the two samples is ____________.

Your answerChoose one option.

0.5

1.0

2.0

4.0

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Two blocks of the same metal are to be welded. The configuration that will undergo the least distortion after welding is

Your answerChoose one option.

Diagram for Metallurgical Engineering question 20

Diagram for Metallurgical Engineering question 20 (figure 2)

Diagram for Metallurgical Engineering question 20 (figure 3)

Diagram for Metallurgical Engineering question 20 (figure 4)

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The most suitable non-destructive testing method for detecting small internal flaws in a dense bulk material is ____________.

Your answerChoose one option.

Dye penetrant method

Ultrasonic inspection

Eddy current testing

Magnetic particle inspection

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Alligatoring is a defect commonly observed in ____________.

Your answerChoose one option.

Extrusion

Deep drawing

Sheet metal forming

Rolling

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The standard deviation (rounded off to one decimal place) of the following set of five numbers is ____________.

6, 8, 8, 9, 9

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A FCC crystal with a lattice parameter of 0.3615 nm is used to measure the wavelength of monochromatic X-rays. The Brag angle (θ) for the reflection from (111) planes is 21.68°. The wavelength of X-rays (in nm, rounded off to three decimal places) is ____________.

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A plate of width 100 cm and thickness 5 cm is rolled to a thickness of 3 cm. If the entry velocity is 10 cm s⁻¹, the exit velocity of the plate (in cm s⁻¹, rounded off to one decimal place) is ____________.

Assume no change in the width of the plate.

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GATE MT topic:materials-science PYQs

Question 16

Question 17

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Question 21

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Question 25