(AUTONOMOUS)
B. Tech I Semester Regular/Supplementary Examinations, December 2017
(Regulations: VCE-R15)
ENGINEERING DRAWING-I
(Common to Mechanical Engineering Civil Engineering)
Date: 18 December, 2017
Time: 3 hours
Max Marks: 75
Answer ONE question from each Unit
All Questions Carry Equal Marks
Unit I
1.

Construct a plain scale of convenient length to measure a distance of 1cm and mark on it a distance of 0.94cm.
8M

An area of 144sq.cm on a map represents an area of 36sq.km on the field. Find the RF of the scale of the map and draw a diagonal scale to show Km, hectometers and decameters and to measure up to 10km. Indicate on the scale a distance 7km, 5hectometers and 6decametres.
7M
2.

Construct a vernier scale to read metres, decimetres and centimetres and long enough to measure upto 4m. The RF of the scale in 1/20. Mark on it a distance of 2.28m.
8M

Construct a forward reading vernier scale to read distance correct to decameter on a map in which the actual distances are reduced in the ratio of 1:40,000. The scale should be long enough to measure up to 6km. Mark on the scale a length of 3.34km and 0.59km.
7M
Unit II
3.
A fountain jet is discharged water from the ground level at an inclination of 45°. The jet travels a horizontal distance of 10m from the point of discharge and falls on the ground. Trace the path of the jet.
15M
4.
The foci of an ellipse are 90mm apart and the major axis is 120mm long. Draw the ellipse by using arcs method.
15M
Unit III
5.
A line AB measuring 70mm has its end A 15mm in front of VP and 20mm above HP and the other end B is 60mm in front of VP and 50mm above HP. Draw the projections of the line and find the inclinations of the line with both the reference planes of projections.
15M
6.
A straight line PQ 65mm long is inclined at 450 to HP and 300 to VP. The point P is 70mm from both the reference planes and the point Q is towards the reference planes. Draw the projections.
15M
Unit IV
7.
A triangular plane figure of sides 25mm is resting on HP with one of its corners such that the surface the lamina makes an angle of 60° with HP. If the side opposite to the corner on which the lamina rests makes an Angle of 30° with VP, draw the top and front views in this position.
15M
8.
A regular pentagonal lamina of 25mm side is resting on one of its sides on HP while the corner opposite to this side touches VP. If the lamina makes an angle of 60° with HP and 30° with VP, draw the projections of the lamina.
15M
Unit V
9.
A pentagonal pyramid with side of base 25mm and axis 50mm long is resting on one of its slant faces on H.P, such that its axis is parallel to V.P. Draw the projections.
15M
10.
A hexagonal prism with a side of base 25mm and axis 60mm long is resting on one of its rectangular faces on H.P. Draw the projections of the prism when it is inclined at 45° to V.P.
15M