Download GTU BE/B.Tech 2018 Winter 7th Sem New 2172003 Manufacturing Technology Ii Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-VII (NEW) EXAMINATION - WINTER 2018
Subject Code: 2172003 Date: 26/11/2018
Subject Name: Manufacturing Technology - I1
Time: 10:30 AM TO 01:00 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.

Q.1 (a) How a particular manufacturing method is selected for a product? Explain with a list of factors of selection of method.

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(b) Explain the concept of line and end standard in measurement giving examples.
(c) Explain the effect of moisture and clay content on molding sand.
Q.2 (a) Explain ‘Metal Spinning’ with neat sketch.
(b) What is principle of extreme positions in jigs and fixtures? Explain with sketch and example.
(c) Write a short note on ‘Gas welding’.

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OR
(c) Write a short note on ‘submerged arc welding(SAW)’.
Q.3 (a) Explain ‘Principle of Extrusion’. Also explain the ‘extrusion ratio’.
(b) Differentiate between embossing and coining.
(c) What is GFN ? Briefly discuss its effects on molding sand properties.

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OR
Q.3 (a) With neat sketch, discuss the principle of rolling.
(b) How arc welding machines are specified?
(c) Sketch the cross section of a sand mold which is ready for pouring. Label the various parts of it.
Q.4 (a) How a tube and rod drawing is done? Show sketches.

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(b) Enlist the various allowances provided to the pattern. Briefly explain any one.
(c). How a fizzy drink can is manufactured? Explain each step with sketch.
OR
Q.4 (a) Briefly discuss ‘shrinkage defects’ in casting giving reasons and remedy.
(b) What is an edge preparation for arc welding? Explain.

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(c) Write a short note on ‘Investment Casting’ with all the steps in sequence.
Q.5 (a) What are the general design considerations for jigs and fixtures?
(b) Show how a sine bar is used for angular measurement.
(c) With neat sketch of set up, write a short note on EDM. Explain the variation of process parameters.
OR

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Q.5 (a) What is ‘Taylor’s principle’ of gauging? Explain.
(b) What are the main elements of jigs and fixtures? Explain any one with example.
(c) With neat sketch of set up, write a short note on AJM. Explain the variation of process parameters.
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