CBSE: Engineering Graphics Class XI Syllabus

Engineering Graphics Class XI Syllabus

Course Structure

S.No.	Chapter / Topic	Marks
Unit-I	Plane Geometry	16
1	Lines, angles and rectilnear figures
2	Circles and tangents
3	Special curves: ellipse, parabola, involute, cycloid. helix and sine-curve
Unit-II	Solid Geometry	27
4	Orthographic-projections of points, lines laminae, (plane) and solids
5	Section of solid-figures
Unit-III	Machine Drawing	27
6	Orthographic projections of simple machine-blocks
7	Isometric-projection of laminae (plane) figures
8	Development of surfaces
IV.	Practical	30
	Total Marks	100

I. PLANE GEOMETRY

Printing English alphabets (capital and small) numerals in standard proportions.

Unidirectional/aligned system of dimensioning as per SP: 46-2003 (Revised)

Unit 1:

Construction of lines, angles and their divisions. Simple questions based on triangles, square, rhombus, trapeziums, regular polygons-pentagon, hexagon and octagon.

Unit 2:

Construction of circles, external and internal tangents of circles, inscribing, circumscribing circles in equilateral triangle, square, rhombus, regular polygons-pentagon, hexagon and octagon.

Unit 3:

Construction of Engineering curves:

• (a) Ellipses by concentric circles, intersecting arcs and intersecting lines.
• (b) Parabola by intersecting lines and intersecting arcs.
• (c) Involute of a circle, cycloid, helix and sine curve.

II. SOLID GEOMETRY

Unit 4:

Methods of orthographic projections and dimensioning strictly as per SP: 46- 2003 revised conventions. Projection of points, lines, regular plane figure and right regular solids such as cubes, prisms and pyramids (square, triangular, pentagonal and hexagonal), cones, cylinders, spheres, hemi-spheres and frustum of pyramids and cone when they are kept with their axis (a) perpendicular, to HP/VP (b) parallel to one plane and inclined to the other (c) parallel to HP and VP both. 

Unit 5:

Section of solids under the same conditions mentioned above made by the horizontal, vertical and inclined planes, also showing true-shape of section.

III. MACHINE DRAWING

Unit 6:

Orthographic projections of simple machine blocks.

Unit 7:

Construction of isometric scale showing main divisions of 10 mm and smaller divisions of 1 mm each. Isometric projection (drawn to isometric scale) of figures such as triangles, squares, pentagons, hexagons, circles and semi-circles with their surface parallel to HP or VP and its one side or diagonal or diameter should be either parallel or perpendicular to HP/VP.

Unit 8:

Development of the surfaces of following solids:

• 1. Cube, cuboid, prisms-triangular, square, pentagonal and hexagonal.
• 2. Pyramids (triangular, square, pentagonal and hexagonal).
• 3. Right circular cylinder and cone.

IV. PRACTICALS

• 1. Developing "Prisms" and "Pyramids" with the help of card board (thick paper).
• 2. Developing different types of packing boxes (cartons).
• 3. Making different types of graphic designs/murals for interior/exterior decorations in colour using the knowledge of geometrical figures with the use of any Computer Software such as Collab-CAD, CORAL DRAW, PHOTOSHOP, etc.
• 4. Drawing ellipse by Trammel and Thread method on the ground / drawing sheet / plywood / cardboard, etc.
• 5. Preparing top-view (plan) of a class room, Home: Drawing room / Bedroom / Study room / Kitchen, Engineering Graphics room drawing different objects therein.
• 6. Drawing through activities: Involutes, cycloid, helix and sine curves listing their uses in daily life.
• 7. Preparing the following sections of solids (prisms, pyramids, spheres, etc.) with clay, soap, thermocol, plasticine, wax or any other material easily and economically available. When the cutting plane is: parallel to the base, perpendicular to the base and inclined to the base. Also creating different objects with combination of above solids.