Roll no……………..
Total no. of
Questions:09]
B.Tech. (sem.-3rd)
MACHINE DRAWING
SUBJECT CODE: BTAE-306
PAPER ID:[A1156]
Instruction to
Candidates:
1.
SECTION-A is compulsory consisting of Ten
question carrying Two marks each.
2.
SECTION-B contains FIVE questions carrying Five
marks each and students has to attempt any four questions.
3.
SECTION –C contains Three questions carrying Ten
marks each and students has to attempt any Two questions.
4.
SECTION -A
l. Write briefly :
a. What is difference between allowance and tolerance?
b. Why sectional views are used in drawing?
c. The root angles in BIS metric thread and BSW threads are
respectively __________and_____________?
d. Why are split muff coupling used in preference with solid
muff?
e. Why brasses are used in connecting rod ends and why are
these made of soft metals?
f. What is blow-off cock and where it is used?
g. What are the functions of steam stop valve?
h. What is the advantage of providing bush in a bearing and
what is the
material of bush?
i. Draw the free hand sketch of hexagonal bolt.
j. What is the use of tailstock in a lathe and how is it operated?
Punjab Technical University
SECTION-B
2. What are the different types of machine drawing? Explain
Production drawing in detail.
3. Draw plan and sectional elevation of a double riveted
butt joint (Single
cover and chain riveting). Take
diameter of rivet: 25 mm.
4. Draw free hand upper half sectional-front elevation of a
protected type
flange coupling on proportionate
scale.
5. What is the strength of transverse fillet welded joint?
6. Discuss the various commands available in Auto-CAD to
draw a pentagon.
SECTION-C
7. Draw the full sectional front view and side view of the
flange coupling as
shown in figure 1.
8. Draw the front view and top view of foot step bearing as
shown in
figure 2.
9. Figure-3 shows the
details of a Lathe tail stock. Assemble all the parts and draw the Front View.
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