Book entitled "Engineering Graphics" contains solution of all the previous year question paper
BE (First/Second) Semester Exam
(Common
to all Branches) (Grading System)
Time:
3 hrs
Maximum
Marks: 70
Minimum
Marks: 22 (D Grade)
Note: Attempt all questions as per the
internal choices. All questions carry equal marks.
1.
Solve any two of the following questions:
a) A
distance of 140 km between two stations on a railway map is represented by a
length of 70 mm. Find the R. F. of the scale of the map and construct a
diagonal scale to read distances on the map, correctly to a kilometre and long
enough to measure 300 km. Also mark on this scale length corresponding to 176
km and 204 km. 7 Marks
Similar to Example 2.13, Page 2.13 of EG - Basant
Agrawal, TMH.
b) Draw
an Ellipse by Concentric Circle method, given the major and minor axes as 80 mm and 50 mm
respectively. 7
Marks
Similar to Example 3.3, Page 3.11 of EG - Basant Agrawal,
TMH.
c) Using
a scale of l:20, draw the
locus of the end point of a cable unwinding itself from a drum of 800 mm
diameter such that the unwound cable is always taut. Also draw a tangent and
normal at any point on the curve. 7 Marks
Similar to Example 4.12, Page 4.16 of EG - Basant
Agrawal, TMH.
2.
The top view of straight line AB 72 mm long measures 62 mm while length of its
front view is 49.2 mm. Its end A is in the V.P. and 12 mm above the H.P. Draw
the projections of the straight line and determine its inclinations with H. P.
and V. P. 14 Marks
Similar to Example 7.26 Page 7.33 of EG - Basant Agrawal,
TMH.
OR
A
line AB 120 mm long is inclined at 45° to H.P. and 30° to the V. P. Its
midpoint C is in V.P. and 20 mm above H.P. The end A is in the third quadrant
and B is in the first quadrant. Draw the projections of the line AB. 14 Marks
Similar to Example 7.55, Page 7.66 of EG - Basant
Agrawal, TMH.
3.
a) Draw the projections of a rhombus having diagonals 100 mm and 40 mm long.
The bigger diagonal is inclined at 30° to H. P. with one of the end points in
H.P. and the smaller diagonal is parallel to both the planes. 7 Marks
Refer Example 8.25, Page 8.32 of EG - Basant Agrawal,
TMH.
OR
A
rectangular plate ABCD measuring 45 mm × 35 mm, has its diagonal AC inclined at
30° to the H.P. whereas the diagonal BD makes an angle of 45° to V.P. Draw its
projections. 7 Marks
It is a difficult question and one need to determine β
angle.
3.
b) A right circular cone, diameter of base 50 mm and height 65 mm lies on one
of its generators on H.P. such that the generator is inclined at 30° to V.P.
Draw its projections. 7 Marks
Similar to Example 9.31, Page 9.38 of EG - Basant
Agrawal, TMH.
Also refer Exercise 9B, Problem 10, Page 9.58 of EG -
Basant Agrawal, TMH.
4.
a) A right circular cone 45 mm diameter, axis 60 mm long is resting on its base
on H.P. It is cut by a plane the H.T of which makes an angle of 45° with the
V.P and is passing 15 mm from the top view axis. Draw the sectional front view
and true shape of the section. 7 Marks
Similar to Example 10.17, Page 10.21 of EG - Basant
Agrawal, TMH.
OR
A
pentagonal pyramid, base edges 25 mm and axis 45 mm long, is lying on one of
its triangular faces on the H. P. with its axis parallel to V. P. An auxiliary
section plane perpendicular to H. P. and inclined at 30º to V. P. cuts the
pyramid and passes through a point 35 mm from the base along the axis. Draw the
sectional front view and the true shape of the section. 7
Marks
Similar to Example 10.34, Page 10.38 of EG - Basant
Agrawal, TMH.
4. b) A right circular cone of 45 mm
diameter and 60 mm height of axis, is resting on its base on the H.P. A point
P, initially situated at the extreme right end of the base and moves around the
surface of the cone and comes back to starting point. Find the length of
shortest path, the point can take. Show the path in the front view. 7 Marks
Similar to Example 11.25, Page 11.28 of EG - Basant
Agrawal, TMH.
5. A
right circular cone of base diameter 30 mm and height 36 mm rests centrally on
a square block of 48 m side and 22 mm thick. Draw the isometric view of the two
solids. 14 Marks
Similar to Example 12.11, Page 12.15 of EG - Basant
Agrawal, TMH.
Also refer Exercise 12, Problem 11, Page 12.42 of EG
- Basant Agrawal, TMH.
OR
What
are basic commands of drafting entities like line and circle? Explain various
editing commands used in CAD. 14 Marks
Refer Article 13.15.1, 13.15.5 and 13.16 of EG - Basant
Agrawal, TMH.
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