Metallurgical Engineering
2025 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE MT 2025 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 61–63 of 65. Imported answers require review unless explicitly marked reviewed.
Question 61
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A single crystal BCC metal with a lattice parameter
is subjected to deformation at a shear strain rate of
.If the average mobile dislocation density in the single crystal is
, the average dislocation velocity is _____
(rounded off to two decimal places).Given: Burgers vector
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A cylindrical specimen is subjected to plastic deformation in tension up to a uniform elongation of 10%. The final cross-sectional area of the gage section is found to be 20 mm
.The initial cross-sectional area of the gage section is _____ mm
(rounded off to an integer).Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 63
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The reaction represented by
follows first order kinetics. At a given temperature, 20% of the reaction is completed in 223 s.The time taken to complete 50% of the reaction at the same temperature is _____ s (rounded off to the nearest integer).
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