Mechanical Drafting | GTU Exam Paper Solution W22 | 09.03.23

Solution of question paper is discussed step by step in English and Gujarati language. The Most imp questions for Mechanical Drafting subject is explained.
Syllabus of Mechanical Drafting:
• Sem 2 Mechanical Draft...
Multiview:
• What is Multi view Rep...
Missing view:
• What is Missing View, ...
Sectional orthographic:
• What is Sectional Orth...
Symbols:
• Machining Symbol | Rou...
Sketches:
• Sketches of Fasteners ...
Limits and Fits:
• GD & T | Mechanical Dr...
1A Sketch the Conical head Rivet, Pan head Rivet and Cup head Rivet.
1B Draw the sketch of form of screw threads: i) Acme Thread ii) Buttress Thread.
2. Draw the pipe line symbols: i) Vacuum line, ii) Steam line
2A State the advantages of Limit and Fits system
2B Draw surface roughness symbol consisting the following details.
Surface roughness limit = 10 μm
Surface producing process = milling
Sampling length = 5 mm
Machining Allowance = 2.5 mm
Direction of lay = parallel
Other roughness limit = 12 μm
2A Give the difference between Hole Basis and Shaft Basis system of
fits.
2B Explain the details given in the surface roughness symbol.
3A What is Bill of Material?
3B 1. Draw the pipe fitting symbols of Check Valve and Safety Valve.
2. Draw the sketches of Nipple and Coupling.
3C The following data is given for a fit 60H7g6.
Find: 1) Max. limit for Hole 2) Min limit for Hole 3) Max. limit for
shaft 4) Min. limit for Shaft 5) Tolerance of Hole 6) Tolerance of
Shaft 7) Type of Fit.
3A 1. Draw the symbol of First Angle Projection Method and Third
Angle Projection Method.
2. Draw the welding symbols of Fillet weld and Spot weld.
3A State the application of Nipple, Coupling and Cap
3C Define the following terms: 1) Limit 2) Fit 3) Tolerance 4) Deviation 5) Allowance 6)
Clearance.
4A Draw the Development of the lateral surface of the part P of a Cone as shown in Fig.-4.
4B Fig.-5 shows two views of an object. Draw the two given views and add Bottom View using 1st Angle Projection Method.
4A Draw the Development of part A of a Cylinder as shown in Fig.-6.
4B Fig.-7 shows two views of an object. Draw the two given views and add Top View using First Angle Projection Method.
5A A vertical square prism having 30 mm base sides and 80 mm height is penetrated by another prism having same size of base such that the axis of the two prisms bisects one another. All the sides of vertical prisms are equally inclined to V.P. and of penetrating prisms are equally inclined to H.P. Draw the projections of prisms and show lines of intersection in them.
5B An Assembly drawing of "Knuckle Joint" is shown in Fig.-8. Draw detail drawing of each part in two views using "First Angle Projection Method". Also prepare part list.
5A The two cylinders, one vertical and other horizontal has their base diameters 50 mm and the axis length 80 mm. They intersect at right angle such that the axes of the two cylinders bisect one another at right angle. Using first angle projection method of projection draw their projections showing line of intersection.
5B A detail drawing of Cotter Joint" is shown in Fig.-9. Draw assembly drawing of the same using "First Angle Projection Method"
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