JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech II MANUFACTURING PROCESS 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
List any two factors considered in the selection of patterns.
Answer
Two factors considered in the selection of patterns are the number of castings required and the complexity of the casting shape.
Name any four types of casting defects.
Answer
Four types of casting defects are: 1) Gas porosity, 2) Shrinkage cavities, 3) Sand inclusions, and 4) Misruns.
How welding processes are basically classified?
Answer
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Write the types of flames in oxy-acetylene gas welding.
Answer
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List any two applications of MIG welding.
Answer
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Define brazing.
Answer
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List two advantages of cold working process.
Answer
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What is the specialty of coining die?
Answer
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Write any four rolling defects.
Answer
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What are the tools used in smith forging?
Answer
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Part B
Explain different types of pattern allowances in detail.
Answer
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Sketch and describe the stages involved in investment casting process.
Answer
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Define and classify centrifugal casting. Explain the working principle involved in true centrifugal casting with a neat diagram.
Answer
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With neat sketches describe the elements of a gating system.
Answer
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Describe briefly the Oxy acetylene equipment with sketch.
Answer
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Explain the working principle of arc welding and gas welding with neat sketches.
Answer
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What are the various types of welding positions used in making a joint with sketch?
Answer
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Explain resistance spot welding process with a neat sketch.
Answer
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Describe the working principle of Tungsten Inert Gas (TIG) welding process with neat sketch.
Answer
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Illustrate the working principle of explosive welding with neat sketch.
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Explain the working principle of Laser beam welding process with neat sketch.
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Explain the working principle of friction welding process.
Answer
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Write short notes on Strain hardening, Recovery and Recrystallization.
Answer
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Explain the process mechanics and characteristics of wire drawing process.
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Describe the properties of hot working metals.
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Explain the principle and operation of rolling.
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Sketch and explain Hydrostatic extrusion process and state its applications.
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Describe various forging defects.
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Construct the direct and indirect extrusion process with neat sketches.
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Explain the different types of forging hammers using with neat sketches.
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