Q.1
14 Marks(a)
Define Manufacturing processes and enlist various manufacturing processes.
(b)
Explain properties of moulding sand.
(c)
Write difference between Hot rolling and Cold rolling. Explain the terms:
Bloom, Billet, Slab, Plate and sheet.
Gujarat Technological UniversitySummer 2025 examination
GTU 3151912 Manufacturing Technology Summer 2025 Question Paper & PDF
B.E. · Mechanical Engineering · Semester 5 · Subject code 3151912
- 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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Q.2
14 Marks(a)
Enlist the various type of patterns used in the casting process.
(b)
Sketch different types of cores used in the foundry practice.
(c)
Explain the casting defects in detail with diagram.
OR
(c)
Explain various types of pattern allowances with a neat sketch.
Q.3
14 Marks(a)
State the purpose of coating on an arc welding electrode.
(b)
Sketch the four types of basic welding joints used in welding.
(c)
Discuss the TIG welding process setup with the help of a neat sketch. Also enlist advantages, disadvantages, and applications.
OR
(a)
Classify the welding process in detail.
(b)
Explain the types and importance of polarity in electric arc welding process with diagram.
(c)
Sketch the three types of flames used in the oxy-acetylene welding process. Give the uses of each.
Q.4
14 Marks(a)
Explain sheet-metal working processes: Shearing, Piercing and Blanking.
(b)
Distinguish between wire drawing and tube drawing with neat sketches.
(c)
Classify extrusion processes and explain forward and backward extrusion process.
OR
(a)
Define following terms; Deep drawing, Coining and Embossing
(b)
Write the significance of recrystallisation temperature in metal forming process.
(c)
Enlist the various type of presses used in forging. Explain with neat sketch.
Q.5
14 Marks(a)
Why do we require high-quality surface finish components?
(b)
Explain finishing process: 1. Honing 2. Lapping
(c)
Explain Injection moulding process for plastic, by stating its principle of operation, advantages, limitation and applications.
OR
(a)
Differentiate Thermosetting plastics and Thermoplastics
(b)
Explain calendaring process.
(c)
Illustrate Barrel Tumbling and Burnishing process with a neat sketch.
More Manufacturing Technology papers
Questions repeat across sessions. Working through two or three papers shows you which topics GTU asks most.
Other Semester 5 subjects
BE Mechanical
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About this paper
Official Gujarat Technological University (GTU) examination paper for Manufacturing Technology (Summer 2025, B.E. · Mechanical Engineering, Sem 5). 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.