Metallurgical Engineering
GATE MT topic:materials-science PYQs
Build your understanding with focused practice from past exam papers.
Questions 291–300 of 650. Imported answers require independent review unless marked reviewed.
Question 31
Open questionMTMSQ1 markNeeds review
Identify the correct statement(s) with respect to the role of nickel as an alloying element in steels.
Your answerSelect all correct options. You can choose more than one.
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Open questionMTMSQ1 markNeeds review
While designing a material for high temperature application, which of the following characteristic(s)/attribute(s) is(are) desirable for achieving better creep resistance?
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Open questionMTMSQ1 markNeeds review
Given the strain rate (
), dislocation density (
), dislocation velocity (
), which of the following relation(s) is(are) correct? Assume that Orowan equation for plastic flow due to the dislocation movement is obeyed.Your answerSelect all correct options. You can choose more than one.
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Open questionMTNAT1 markNeeds review
A set of observations with normal distribution of error as ±1.96σ (where σ is standard deviation) is equivalent to the confidence interval of _______% (round off to the nearest integer).
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Open questionMTNAT1 markNeeds review
A Newtonian incompressible liquid is contained between two parallel metal plates separated by
m (see figure). A stress of 5 Pa is required to maintain the upper plate in motion with a constant speed of 2 m·s
in the horizontal direction relative to the bottom plate.The viscosity of liquid contained between the plates is _______ ×
Pa·s (answer rounded off to 1 decimal place). 
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Open questionMTMCQ2 marksNeeds review
The general solution to the following differential equation is _________, where A and B are constants
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Which one of the following equations will fail to converge to a root with an initial guess value of
, using the Newton-Raphson method?Your answerChoose one option.
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Open questionMTMCQ2 marksNeeds review
Match the following mineral processing operations (Column I) with the corresponding physical principles (Column II)
Column I
(P) Flotation
(Q) Jigging
(R) Tabling
(S) Comminution
Column II
(1) Difference in speed of lateral movements
(2) Hydrophobicity
(3) Difference in size reduction
(4) Difference in initial acceleration
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Open questionMTMCQ2 marksNeeds review
Figures P, Q, R and S schematically show the atomic dipole moments in the absence of external magnetic field. Which one of the following is the correct mapping of nature of magnetism to atomic dipole moments?
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Open questionMTMCQ2 marksNeeds review
Find the correct match between dislocation reactions (Column A) to the descriptions (Column B)
Column A
(P)
(Q)
(R)
Column B
(1) Leading partials merging to form a Lomer-Cottrell lock in an FCC metal
(2) Energetically unfavorable dislocation reaction in an FCC metal
(3) Typical dislocation reaction in a BCC metal
Your answerChoose one option.
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