Q.1
14 Marks(a)
Define (a) strength, (b) elasticity and (c) hardness.
(b)
Classify engineering materials and explain their applications.
(c)
Describe the key factors that influence the selection of materials for different engineering applications.
Gujarat Technological UniversityWinter 2025 examination
GTU BE03000221 Material Science and Metallurgy Winter 2025 Question Paper & PDF
B.E. · Mechanical Engineering · Semester 3 · Subject code BE03000221
- Total
- 70 marks
- To pass
- 23 marks (33%)
- Duration
- 2.5 Hours 10:30 AM – 1:00 PM
- Questions
- 5 with internal choice
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Q.2
14 Marks(a)
Define Atomic Packing Factor (APF).
(b)
Differentiate between Edge Dislocation and Screw Dislocation.
(c)
Explain the Bravais lattice with their seven crystal systems and corresponding fourteen Bravais lattices.
OR
(c)
Explain crystal imperfections and their effect on material properties.
Q.3
14 Marks(a)
Discuss the formation of grains and dendrites structures during cooling in metals.
(b)
State the Hume–Rothery rules and discuss their significance in the formation of solid solutions.
(c)
With the help of a neat diagram, explain the Iron–Iron Carbide equilibrium diagram and its major phases.
OR
(a)
What is Gibbs' phase rule?
(b)
Explain non-equilibrium cooling with suitable diagram.
(c)
Define allotropy and explain it with reference to iron.
Q.4
14 Marks(a)
Explain eutectic and eutectoid reactions with suitable examples.
(b)
Apply the Lever Rule to calculate phase percentages in a binary phase diagram.
(c)
Explain the heat treatment processes: annealing, normalizing, and hardening.
OR
(a)
Draw and explain TTT diagram for eutectoid steel.
(b)
Describe the Jominy End Quench Test. How is it used to determine the hardenability of steel?
(c)
Justify the use of surface hardening techniques like carburizing for gears and induction hardening for crankshafts.
Q.5
14 Marks(a)
Define powder metallurgy. State its advantages.
(b)
Explain Dye Penetrant Testing (DPT) with its principle, procedure, and applications.
(c)
Discuss Magnetic particle test with advantages and limitations.
OR
(a)
Define corrosion and classify its types.
(b)
Explain cathodic protection and other corrosion prevention techniques.
(c)
Compare Destructive Testing and Non-Destructive Testing methods with appropriate examples.
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About this paper
Official Gujarat Technological University (GTU) examination paper for Material Science and Metallurgy (Winter 2025, B.E. · Mechanical Engineering, Sem 3). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.
Transcribed for student exam preparation from Gujarat Technological University official examination archives. Questions, syllabus guidelines, and curriculum marking schemes remain the intellectual property of Gujarat Technological University.