Metallurgical Engineering
2019 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE MT 2019 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 58–60 of 65. Imported answers require review unless explicitly marked reviewed.
Question 48
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The critical radius (in nm, rounded off to one decimal place) of nickel nucleus during solidification at 1673 K is ________.
Given: Enthalpy of fusion of nickel =
; Liquid-solid interfacial energy = 0.5
, and Equilibrium melting temperature of nickel = 1728 K.Log in to check the answer
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A material, made up of alternating layers of metals A and B, is loaded as shown below. If the volume % of B is 25%, the elastic modulus (in GPa, rounded off to one decimal place) of the material is ________.
Given: Elastic moduli of A and B are 200 GPa and 100 GPa, respectively.
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The S-N curve for a steel is shown below. If the stress ratio, (
) =
, the maximum stress (in MPa, rounded off to the nearest integer) that the steel can withstand for infinite fatigue life is ________.
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