Download PTU (Punjab Technical University) B.Tech (Bachelor of Technology) / BE (Bachelor of Engineering) 2021 January ME 3rd Sem 76419 Machine Drawing Previous Question Paper
Total No. of Pages : 04
Total No. of Questions : 15
B.Tech.(ME) (2018 Batch) (Sem.?3)
MACHINE DRAWING
Subject Code : BTME-303-18
M.Code : 76419
Time : 3 Hrs. Max. Marks : 60
INST RUCT IONS T O CANDIDAT ES :
1 .
The re are three s ectio ns in this ques tion pape r. Atte mpt ALL the questions
from SECT ION- A.
2 .
Attempt any TWO ques tions from SECT ION -B and any ON E question from
SECT ION-C.
3 .
First angle projection to be use d. You ma y assu me any mis sing dimension.
SECTION-A
Write briefly :
1.
Draw conventions for `Cutting Plane Line' and `Gun Metal'.
2.
Explain unilateral and bilateral tolerances with an example.
3.
With suitable sketch, explain the method of dimensioning of i) Arc ii) Angle.
4.
What are the advantages of welded joints over riveted joints?
5.
Why are split muff couplings used in preference to solid muff?
6.
What is a tap bolt?
7.
What is lock nut? How does it work?
8.
If two shafts to be flange coupled are slightly misalignmends, which type of flange
coupling would you suggest and why?
9.
What is the function of blow off cock?
10. What is application of swivel bearing?
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SECTION-B
11. Draw freehand sketch of top half sectioned front view of muff coupling.
12. Draw freehand sketches of front view and top view of a knuckle joint.
13. Draw a full sectioned freehand sketch of spigot and socket pipe joint.
SECTION-C
14. Assemble the parts of Screw Jack given in Fig.l and draw the following views (with bill of
materials) :
a) Elevation left half in section
b) Top view
15. Assemble the parts of a Stop Valve given in Fig.2 and draw the following views (with bill
of materials) :
a) Elevation full in section
b) Plan
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FIG.1
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10
9
FIG.2
NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any
page of Answer Sheet will lead to UMC against the Student.
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This post was last modified on 26 June 2021