JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech II MANUFACTURING PROCESS Previous Question Paper (May - 2019 - R16)
Note: This question paper contains two parts A and B. Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit.
Part A
List the advantages of metallic pattern materials.
Answer
Metallic patterns offer superior dimensional stability, high resistance to wear and abrasion, and a smooth surface finish. They are ideal for high-volume production runs where durability and long service life are required.
What are the applications of sweep pattern?
Answer
Sweep patterns are primarily used for producing large, symmetrical circular or cylindrical castings such as bells, large pipes, or circular plates. They are cost-effective for large components where creating a full pattern would be uneconomical.
Differentiate between Welding and soldering.
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Explain the basic principle of resistance welding?
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Discuss the parameters affecting Heat Affecting zone (HAZ) briefly.
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Explain the principle of seam welding.
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Differentiate blanking and piercing?
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What is hot rolling?
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What is swaging?
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What are the forging defects?
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Part B
Explain the principle of investment casting with necessary sketches.
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Describe the working of cupola with sketch.
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Sketch and explain atomic hydrogen welding.
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Categorize in detail welding defects and their causes and remedies.
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With sketch, explain the laser beam welding process. Mention advantages and limitation of laser welding also give application.
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Discuss magneto particle and radiographic inspection testing of weldings.
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Discuss recovery, recrystallisation and grain growth.
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Illustrate wire drawing and Tube drawing.
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Discuss impact extrusion.
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Enumerate the principles of forging.
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With a neat sketch, explain hydrostatic extrusion.
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Discuss smith forging and roll forging.
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