Cochin University of Science and Techology (CUST) 2007-1st Year B.Tech engineering graphics - exam paper

1st YEAR BTECH MODEL exam APRIL 2007
ENGINEERING GRAPHICS

Time: three Hrs Max marks:100

1. a) Construct a diagonal scale of R.F =1/50 to learn upto 1/100th of a metre & to
measure a maximum length of seven meters . Mark a length of 5.45 m on it.

b) Draw the involute of a circle of diameter 30 mm.

2. a) The distance b/w the end projectiles of line AB is 60mm apart. End A is 15mm
above HP & 30mm in front of VP. The end B is 35mm above HP & 10mm in front
of VP. Draw the projections of the line & obtain its actual length & inclinations with HP
& VP.
OR
3. a) A hexagonal plate of side 30mm is resting on 1 of its edges on VP which is
inclined at 40 degrees to HP. Its surface is inclined at 35 degrees to VP. Draw its
projections.

4. a) A pentagonal pyramid ,side of base 25 mm & height 60mm rests on 1 of its slant
edges on HP such that its axis is parallel to VP. Draw its projections.
OR

5. b) A cone of base diameter 50 mm & height 55mm is resting on its base on HP It is cut
by a part plane perpendicular to VP, inclined at 45 degrees to HP & passing
through a point on the axis 30mm beneath the vertex. Draw the projections of the cone
& obtain the actual shape of the cut surface.

6. A triangular prism of side 60mm & height 100mm has its axis vertical & a face
perpendicular to VP. IT is penetrated by a different triangular prism of side 40mm &
length 80mm. The axes of the two prisms are parallel to VP& intersect every other at their
mid- points. The top face of the horizontal prism is horizontal. Draw the curves of
intersection.
OR

7. A pentagonal pyramid of side of base 30mm & height 60mm stands with its base on
HP such that 1 of its base edges is parallel to VP. It is cut by a part plane
perpendicular to the VP, inclined at 30 degrees to HP & bisecting the axis. Draw the
development of the cut solid.

8. Draw the isometric view of a cone resting over a vertical cylinder. The diameter of
cylinder is 45 mm & height 55mm. The base diameter & height of the cone are identical as
that of the cylinder.
OR

9. A rectangular pyramid of base 60mm by 45mm & altitude 65mm rests with its base on
the ground plane. 1 corner of the base is 20 mm to the left of the eye & is in the PP.
The 60mm side of the base recedes from the PP towards the right at an angle of
inclination of 40 degrees with PP. The eye is 100 mm from the PP & 80 mm above the
ground plane. Draw the perspective of the pyramid.

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Earning:   Approval pending.