Code No: R07A10291
JAWAHARLAL NEHRU TECHNOLOGY UNIVERSITY, HYDERABAD
I St B.Tech Regular Examinations, June – 2009
ENGINEERING DRAWING
(Common to CSE and CSSE)
Time: 3 hours
Max. Marks.80
Answer any Five questions
All questions carry equal marks
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1.
Two fixed points A and B are 100mm apart. Trace the complete path of a point P
moving (in the same plane as that of A and B) in such a way that, the sum of its
distances from A and B is always the same and equal to 125mm. Name the curve.
Draw another parallel to and 25mm away from this curve.
[16]
2.
A circle of 50mm diameter rolls on a horizontal line for half a revolution clock
wise and then on a line inclined at 60o to the horizontal for another half, clock-
wise. Draw the curve traced by a point P on the circumference of the circle, taking
the top-most point on the rolling circle as the initial position of the generating
point.
[16]
3.a]
A line PQ 75 mm long, has its end P in the VP and the end Q in the HP. The line
is inclined at 300 to the HP and at 600 to the VP. Draw its projections.
b]
State the quadrants in which the following are situated.
[8+8]
i]
A point P; its top view 40 mm above x y; the front view, 20mm below the
top view.
ii]
A point Q; its projections coincide with each other 40 mm below x y.
4.
Draw the projections of circle of 75 mm diameter having the end A of the
diameter AB in the H.P., the end B in the V.P., and the surface inclined at 30o to
the H.P. and at 60o to the V.P.
[16]
5.a]
Draw the projections of a hexagonal pyramid, base 30 mm side and axis 60 mm
long, having its base inclined at 450 to the V.P.
b]
Draw the projections of a pentagonal prism, base 25 mm side and axis 50 mm
long, resting on one of its rectangular faces on the ground, with the axis inclined
at 450 to the VP.
[16]
6.
A cone of base 50mm diameter and axis 80 long, has one of its generators on V.P
and inclined at 30o to H.P. Draw the three