Engineering Drawing – Lab and Home Assignments

Engineering Drawing – Lab and Home Assignments /इंजीनियरिंग ड्राइंग – लैब और होम असाइनमेंट

Submission Date – (Assignment 1 to 5 is 10 November 2025)

Lab Assignment 1 [Engineering Curves I]

1. A point moves in a plane in such a way that the sum of its distances from two fixed points 100 mm apart is 130 mm. Name and draw the locus of this point.
2. The major axis of an ellipse is 110 mm and minor axis is 70 mm long. Draw an ellipse by concentric circle method.
3. Inscribe the largest possible ellipse in a rectangle of sides 160 mm and 100 mm.
4. A parabolic arch has a span1# of 160 mm and a maximum rise of 100 mm. Draw a curve using Tangent method.
5. Draw a parabola of base 120 mm and axis 80 mm by oblong method.
6. Draw a hyperbola when its asymptotes are inclined at 60o to each other and passes through a point P. The point P is at a distance of 40 mm and 50 mm from the asymptotes.

Lab Assignment 2 [Engineering Curves II]

1. Draw a cycloid of a circle of diameter 50 mm for one revolution. Also, draw a tangent and a normal to the curve at a point 35 mm above the base line.
2. Draw an epicycloid of a circle of diameter 50 mm, which rolls outside a circle of diameter 180 mm for one revolution. Also, draw a tangent and a normal to the epicycloid at a point 135 mm from the centre of the directing circle.
3. Draw a hypocycloid of a circle of diameter 50 mm, which rolls inside a circle of diameter 180 mm for one revolution. Also, draw a tangent and a normal to the hypocycloid at a point 50 mm from the centre of the directing circle.
4. Draw an involute of a circle of diameter 50 mm. Also draw normal and tangent at a point 100 mm from the centre of the circle.
5. Draw an Archimedean spiral of 1½ convolutions for the shortest and the greatest radii as 20 mm and 90 mm, respectively. Also, draw a tangent and a normal to the curve at a point 50 mm from the pole.
6. Draw a logarithmic spiral of one convolution, when the shortest distance is 16 mm and ratio of the length of radius vectors enclosing an angle of 30° is 9:8. Also, draw a tangent and a normal to the curve at a point 50 mm from the pole.

Lab Assignment 3 [Engineering Scales]

1. An area of 49 square centimetres on a map represents an area of 16 sq. m on a field. Draw a scale long enough to measure 8 m. Mark a distance of 6 m 9 dm on the scale.
2. The distance between two stations by road is 200 km and it is represented on a certain map by a 5 cm long line. Find the R.F. and construct a diagonal scale showing single kilometre and long enough to measure up to 600 km. Show a distance of 467 km on this scale.
3. On a railway map, an actual distance of 36 miles between two stations is represented by a line 10 cm long. Draw a plain scale to show mile and long enough to read up to 60 miles. Also draw a comparative scale attached to it to show kilometre and read up to 90 kilometres. On the scale show the distance in kilometres equivalent to 46 miles. Take 1 mile = 1609 metres.
4. Construct a ver nier scale of 1:40 to read metres, decimetres and centimetres and long enough to measure up to 6 m. Mark a distance of 5.76 m on it.

Lab Assignment 4 [Orthographic Projections]

Sheet Problems Orthographic projection Mech 2024

Lab Assignment 5 [Projection of Straight Lines]

1. A 60 mm long line PQ has its end A 25 mm above the H.P. and 40 mm in front of the V.P. Draw the projections of the line when it is parallel to both the reference planes. [parallel to both]
2. A 55 mm long line LM is perpendicular to the H.P. and 25 mm in front of the V.P. Draw its projections when one end of the line is 15 mm above the H.P. [Perp to HP]
3. A 50 mm long line AB is perpendicular to the V.P. and 40 mm above the H.P. One end of the line is 10 mm in front of the V.P. Draw its projections [Perp to VP]
4. A 70 mm long line RS lies both on the H.P. and the V.P. Draw its projections.
5. A 70 mm long line MN is inclined at 45° to the H.P. and parallel to the V.P. The end M is 15 mm above the H.P. and 25 mm in front of the V.P. Draw its projections.[inclined to HP]
6. An 80 mm long line EF is inclined at 60° to the V.P. and parallel to the H.P. One end of the line is 30 mm above the H.P. and 10 mm in front of the V.P. Draw its projections. [inclined to VP]
7. A 100 mm long line LR has its end L 10 mm above the H.P. and 70 mm in front of the V.P. The line is inclined at 60° to the H.P. and 30° to the V.P. Draw its projections.
8. A 75 mm long line CD lying in the first angle has its end C on the H.P. and end D in the V.P. The line is inclined at 45° to the H.P. and 30° to the V.P. Draw its projections.
9. A 70 mm long line BC has its end B 20 mm above the H.P. and 40 mm in front of the V.P. The other end C is 60 mm above the H.P. and 10 mm in front of the V.P. Draw the projections of BC and determine its inclinations with the reference planes.
10. The front and top views of a straight line GH measures 50 mm and 65 mm, respectively. The point G is on the H.P. and 20 mm in front of the V.P. The front view of the line is inclined at 45° to the reference line. Determine the true length of GH and its true inclinations with the reference planes.
11. The front and top views of an 80 mm long line KL measures 70 mm and 60 mm, respectively. The end K is on the H.P. and the end L is in the V.P. Draw the projections of line KL and determine its inclinations with the H.P. and the V.P.
12. Two straight lines PQ and QR make an angle of 120° between them in their front and top views. PQ is 60 mm long and is parallel to and 15 mm from both the H.P. and the V.P. Determine the true angle between PQ and QR, if point R is 50 mm above H.P.

Lab Assignment 6 [Projection of Planes]

Lab Assignment 7 [Projection of Solids, Section of Solids and Development of Lateral Surface]

Lab Assignment 8 [Interpenetration of Solids or Intersection of Surfaces]

Lab Assignment 9 [Isometric Projections]

Lab Assignment 10 [Introduction to AutoCAD/Fusion]