Download GTU BE/B.Tech 2019 Summer 5th Sem Old 151901 Manufacturing Processes Ii Question Paper

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Subject Code: 151901

GUJARAT TECHNOLOGICAL UNIVERSITY

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Date: 07/06/2019
Subject Name: Manufacturing Processes - II
Time: 02:30 PM TO 05:00 PM
Total Marks: 70

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Instructions:

1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

1. 1. (a) Classify manufacturing processes and discuss the criterion for selection of manufacturing process. (07)

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   2. (b) Enlist various patterns used in the casting process and briefly explain any three out of them. (07)
2. 1. (a) Explain with neat sketches types of gating systems used in casting. (07)
   2. (b) List out various pattern allowances and discuss them. (07)

   OR

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   1. (a) State and explain various types of casting defects, causes of defects and its remedies. (07)
3. 1. (a) Explain the flame characteristics of the gas welding process with a neat sketch. (07)
   2. (b) Discuss with neat sketch TIG welding process. State its advantages, limitations and applications. (07)

   OR

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   1. (a) Write a short note on: “Electron Beam Welding” (07)
4. 1. (a) Explain seam welding process with the help of a sketch. Differentiate seam welding and spot welding. (07)
   2. (b) What is re-crystallization temperature? Differentiate hot working and cold working. (07)

   OR

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   1. (a) List the factors influencing the rolling process. Explain the effect of roller diameter and metal friction on the rolling process. (07)
5. 1. (a) With neat sketch explain blanking, piercing, coining, embossing, drawing and squeezing. (07)
   2. (b) Briefly explain the injection moulding process. (07)

   OR

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   1. (a) Explain the classification of plastics with their applications. (07)
   2. (b) Enlist super finishing processes and explain Honing. (07)
   3. (c) Explain cylindrical and centerless grinding process. (07)

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