GATE MT topic:metallurgy PYQs & Answers — Page 23

Questions 221–230 of 650. Imported answers require independent review unless marked reviewed.

Topic practice 650 questionsPage 23 of 65

When cracks propagate in a brittle material, the following option(s) is/are correct

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

elastic strain energy decreases

surface energy increases

surface energy decreases

elastic strain energy increases

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Which of the following is/are responsible for reducing the high cycle fatigue life of a component?

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

increasing the mean stress at constant amplitude

increasing the surface roughness

employ shot peening

absence of sharp corners in the component

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The non-destructive testing technique(s) for detecting internal defects in a steel component is/are

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

X-ray tomography

Ultrasonic technique

Gamma radiography

Dye penetrant technique

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The condition(s) for high degree of mutual substitutional solid solubility for two metals is/are

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

metals should have same valence

metals should have same crystal structure

the difference in atomic size of metals should be less than 15%

the difference in electronegativity of metals should be large

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The sum of eigen values of the matrix

is __________ (in integer).

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The probability of setting an easy exam paper by three setters are

, and

. If all three are setting one paper each, then the probability that at least one of the papers will be easy is __________ (round off to 2 decimal places).

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Maximum number of phases that can be in equilibrium for a 5-component system at constant temperature and pressure is __________ (in integer).

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A liquid of density

is flowing over a flat plate with a free stream velocity of

. The laminar boundary layer thickness at a distance of

from the leading edge of the plate is

. The viscosity of the liquid in centipoise is __________ (round off to 2 decimal places).

Given: 1 centipoise =

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The rate constant of a reaction at 400 K is three times the value at 300 K. The activation energy of the reaction in

is __________ (round off to 1 decimal place).

Given: Universal gas constant, R = 8.314

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The maximum value of function

in the domain

is __________ (round off to nearest integer).

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GATE MT topic:metallurgy PYQs

Question 26

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Question 28

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Question 30

Question 31

Question 32

Question 33

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Question 35