JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B. Tech II Year METALLURGY AND MATERIALS SCIENCE Previous Question Paper (February - 2024 - R16)
Note: i) Question paper consists of Part A, Part B. ii) Part A is compulsory, which carries 25 marks. In Part A, answer all questions. iii) In Part B, Answer any one question from each unit. Each question carries 10 marks and may have a, b as sub questions.
Part A
What is intermetallic compound?
Answer
An intermetallic compound is a solid phase containing two or more metallic elements that form a complex crystal structure different from that of the individual components, typically characterized by stoichiometric proportions and metallic bonding with some ionic or covalent character.
What is Bravais lattice? Give few examples.
Answer
A Bravais lattice is one of the 14 distinct geometric arrangements of points in three-dimensional space that describe the translational symmetry of a crystal structure. Examples include Simple Cubic (SC), Body-Centered Cubic (BCC), Face-Centered Cubic (FCC), and Hexagonal Close-Packed (HCP).
What is Phase rule?
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What is the usefulness of equilibrium diagrams?
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What are the structural constituents of 1.2%C steel at room temperature?
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What is cyclic annealing?
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What are the important properties of malleable cast iron?
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What is malleable cast iron?
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What is glass?
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What are the applications of polymers?
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Part B
What is packing efficiency? Deduce the packing efficiency for HCP crystal.
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Define solid solution. Explain the classification of solid solutions with neat sketches.
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Define family of planes. How the family of planes of (110) are represented (draw neat sketches)?
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How density of a crystal is calculated?
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Explain the different methods of phase diagram construction.
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Explain eutectic and eutectoid phase transformation diagrams with examples.
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Draw the cooling curves for pure iron and eutectic alloy.
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Explain the three phase transformation reactions in Fe – Fe3C phase diagram with full information.
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Differentiate between annealing and normalizing.
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What is hardening? How it is done?
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What are plain carbon steels? Explain its classification.
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Distinguish between white cast iron, malleable cast iron and gray cast iron with respect to composition, microstructure, properties and applications.
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Why copper and titanium are ductile?
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Explain the classification of copper alloys.
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What are alpha Ti alloys? Explain its important applications.
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What are cermets? Explain its applications.
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Distinguish between structural ceramics and crystalline ceramics. Explain with examples.
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What are ceramic composites? Explain its important properties and applications.
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Distinguish between ceramics and composites with examples.
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