What is the exam pattern and passing mark for GTU Material Science and Metallurgy (3131904)?

The GTU theory examination carries 70 total marks with a duration of 2.5 Hours. Minimum passing criteria is 23 marks (33%). The paper consists of 5 main questions with official marking breakdown and internal choices.

Where can I download the official GTU 3131904 Summer 2026 question paper PDF?

The official GTU question paper PDF is linked directly from Gujarat Technological University's official examination archive. You can view the full paper online or download the original file.

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Gujarat Technological UniversitySummer 2026 examination

GTU 3131904 Material Science and Metallurgy Summer 2026 Question Paper & PDF

B.E. · Mechanical Engineering · Semester 3 · Subject code 3131904

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Total: 70 marks
To pass: 23 marks (33%)
Duration: 2.5 Hours 2:30 PM – 5:00 PM
Questions: 5 with internal choice

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12 of 25 questions on this paper were also asked in other years. Each is marked below with the years it appeared.See all 12 repeated 3131904 questions, most asked first

Q.1

14 Marks

(a)

3 marks

Defend the statement with example: “India has been exceptional in the field of materials science and metallurgy.”

(b)

4 marks

List at least eight different properties in materials that make them useful for engineering applications.

(c)

7 marks

Explain the criteria for selection of materials for engineering applications.

Q.2

14 Marks

(a)

3 marks

Define: Unit cell, Crystal structure and Polymorphism.

(b)

4 marks

List major mechanical property requirement for,

i)Base of heavy machinery, and

ii)Gears in Car

(c)

7 marks

Draw the following:

(1 0 0), [1 1 0], (2

1), [1 2 2], (02 Marks

1)and (0 0 0

(c)

2 marks

Draw the following:

(0 0

1), [0 1 1], (12 Marks

1), [2 1 2], (1 0

2)and (0 0 0

Q.3

14 Marks

(a)

3 marks

Explain the need for use of etchants during microstructure observation.

(b)

4 marksAsked in 2 of 2 papers

Differentiate between macroscopic and microscopic examination.

Also asked in Summer 2025 Q2b

(c)

7 marksAsked in 2 of 2 papers

Draw a neatly labeled Fe – Fe3C phase diagram and write all of the invariant reactions taking place in the same.

Also asked in Summer 2025 Q3c OR

(a)

3 marks

Define: System, Phase and Component.

(b)

4 marksAsked in 2 of 2 papers

What is Degree of Freedom? Write Gibb’s Phase Rule for unary and binary systems.

Also asked in Summer 2025 Q2c OR

(c)

7 marksAsked in 2 of 2 papers

Explain the mechanism of solidification of metals. Derive the expression to calculate critical radius of nuclei for homogeneous nucleation.

Also asked in Summer 2025 Q3a

Q.4

14 Marks

(a)

3 marksAsked in 2 of 2 papers

Differentiate between equilibrium cooling and non-equilibrium cooling.

Also asked in Summer 2025 Q3b

(b)

4 marks

Write the characteristics of grey cast iron and white cast iron.

(c)

7 marksAsked in 2 of 2 papers

Draw TTT diagram for eutectoid steels and explain the significance of cooling rate with example.

Also asked in Summer 2025 Q4c

(a)

3 marksAsked in 2 of 2 papers

State advantages and disadvantages of powder metallurgy.

Also asked in Summer 2025 Q4c OR

(b)

4 marks

Draw the microstructure of hypoeutectoid steel and hypereutectoid steels.

(c)

7 marksAsked in 2 of 2 papers

Write short notes on Carburizing and Flame hardening.

Also asked in Summer 2025 Q4b

Q.5

14 Marks

(a)

3 marksAsked in 2 of 2 papers

List the types of corrosion.

Also asked in Summer 2025 Q5b OR

(b)

4 marks

Explain the principles of eddy current testing along with its advantages and disadvantages.

(c)

7 marksAsked in 2 of 2 papers

State various methods used for metal powder production and explain the atomization method.

Also asked in Summer 2025 Q4a OR

(a)

3 marksAsked in 2 of 2 papers

Explain the techniques to prevent corrosion.

Also asked in Summer 2025 Q5a

(b)

4 marks

Write a short note on diffusion processes.

(c)

7 marksAsked in 2 of 2 papers

Explain the principles of ultrasonic testing along with its advantages, disadvantages and applications.

Also asked in Summer 2025 Q5c OR

More Material Science and Metallurgy papers

Questions repeat across sessions. Working through two or three papers shows you which topics GTU asks most.

Summer 202570 marks · 5 questions

Other Semester 3 subjects

BE Mechanical

3131905

Engineering Thermodynamics

3131906

Kinematics and Theory of Machines

BE03000201

Engineering Thermodynamics

BE03000211

Mathematics 3 (Mechanical)

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About this paper

Official Gujarat Technological University (GTU) examination paper for Material Science and Metallurgy (Summer 2026, 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.

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