Production and Industrial Engineering
GATE PI topic:engineering-materials PYQs
Build your understanding with focused practice from past exam papers.
How to practice topic:engineering-materials
Attempt a question, record the concept and assumptions, then check the available answer. Rework mistakes after revising the relevant concepts. Topic tags can overlap; review the question context.
Questions 1–10 of 23. Imported answers require independent review unless marked reviewed.
Question 18
Open questionPIMCQ1 markNeeds review
A plain carbon steel sample of eutectoid composition is heat treated from austenizing temperature to achieve a microstructure consisting of ONLY bainite.
Which ONE of the following is the corresponding heat treatment method?
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An Iron-Carbon alloy at room temperature has pro-eutectoid ferrite as a constituent in the microstructure, that formed above the eutectoid temperature. The alloy also has pearlite as another constituent that has formed below eutectoid temperature.
Which ONE of the following best describes this Iron-Carbon alloy?
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Atomic packing factor of a body centered cubic structure is closest to
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 51
Open questionPINAT2 marksNeeds review
In the iron-carbon equilibrium phase diagram, the eutectoid reaction occurs at 723 °C with the eutectoid composition of 0.83 weight % carbon. Ferrite and cementite phases are considered to contain 0.022 weight % carbon and 6.67 weight % carbon, respectively. If a steel specimen with 0.7 weight % carbon is cooled from 950 °C to below 723 °C, the fraction of eutectoid ferrite is________. (Rounded off to two decimal places)
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Which one of the following pure metals has the hexagonal close packed (HCP) crystal structure at room temperature?
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For a mild steel specimen subjected to uniaxial tensile load, which of the following is/are TRUE?
Your answerSelect all correct options. You can choose more than one.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 37
Open questionPIMCQ2 marksNeeds review
In the iron-carbon equilibrium phase diagram, the temperature and composition of the eutectoid point are 727 °C and 0.77 weight % carbon, respectively. If a steel specimen with 1.2 weight % carbon is cooled from 1000 °C to the room temperature, then the fraction of pro-eutectoid cementite phase in the steel is ____ (Rounded off to 2 decimal places)
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Creep of mild steel at elevated temperature involves
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A metal rod of diameter 14 mm is subjected to a tensile test. After the test, its cross-section diameter at the fractured end is 12 mm. The ductility, in % , is _____ (round off to 2 decimal places).
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Open questionPIMCQ2 marksNeeds review
Match the engineering materials at room temperature with the given crystal structures.
Engineering material: P—Si; Q—Fe; R—Al; S—Zn.
Crystal structure: 1—FCC; 2—HCP; 3—Diamond Cubic; 4—BCC.
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