CBSE Class 11 Syllabus 2022-23 Engineering Graphics

ENGINEERING GRAPHICS (Code No. 046)
CLASS XI-XII (2022-23)

The subject of 'Engineering Graphics' has become an indispensable tool for
Engineers, Technocrats, Architects, Draftsmen, Surveyors, Designers and many other
professionals in the recent times. It is used to convey the ideas and information
necessary for the construction or analysis of machines, structures and system,
graphically. It is expected that the knowledge gained through the study of different
topics and the skills acquired through the prescribed practical work will make the
learners to meet the challenges of academic, professional courses and daily life
situations after studying the subject at Senior Secondary Stage.

Objectives:

The study of the subject of Engineering Graphics at Senior School Level aims at
helping the learner to:
 Develop clear concept and perception of different objects.
 Develop a clear understanding of plane geometry, solid geometry and
machine drawing so as to apply the same in relevant practical fields such as
technology and industry.
 Develop the skill of expressing two-dimensional and three-dimensional
objects into professional language and vice versa.
 Acquire speed and accuracy in use of drawing instruments.
 Acquire the ability to readily draw neat sketches, often needed in "On-job
situations".
 Use technology (CAD) in developing isometric and orthographic projections of
simple objects.
UPDATED COURSE STRUCTURE
CLASS XI (2022-23)
One Paper (Theory): 3 Hours 70 Marks
One paper (Practical): 3 Hours 30 Marks

S.No. Unit Marks Periods
I PLANE GEOMETRY 10 15
1. Lines, angles and rectilinear figures
2. Circles, inscribing and circumscribing of circles
II SOLID GEOMETRY 30 70
3. Orthographic projection of points and lines
4. Orthographic projection of regular plane figures
5. Orthographic projection of right regular solids

6. Section of solids
III MACHINE DRAWING 30 50
7. Orthographic projections of simple machine blocks
8. Isometric projection of laminae (plane figures)
Practicals 30 30
Total Marks 100 165

THEORY
I. PLANE GEOMETRY 15 Periods

Printing English alphabets (capital and small) and 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, regular polygons-pentagon, and hexagon.
8 Periods
Unit 2: Construction of circles, inscribing and circumscribing of circles in equilateral
triangle, square, rhombus, regular polygons-pentagon and hexagon.
7 Periods

II. SOLID GEOMETRY 70 Periods

Unit 4: Orthographic projection: dimensioning and conventions strictly as per SP
46:2003 (Revised). Orthographic projection of points and lines. 20 Periods
Unit 5: Orthographic projection of regular plane figures - triangle, square, pentagon,
hexagon, circle and semi-circle. 14 Periods
Unit 6: Orthographic projection of right regular solids such as cubes; prisms and
pyramids (square, triangular, pentagonal and hexagonal); cones; cylinders;
spheres; hemi-spheres; frustum of pyramids and cone, when they are kept
with their axis (a) perpendicular to HP/VP (b) parallel to HP and VP both.
20 Periods
Unit 7: Section of right regular solids such as cubes; prisms and pyramids (square,
triangular, pentagonal, and hexagonal); cones; cylinders; spheres, kept with
their axis perpendicular to HP/VP, made by a vertical cutting plane.
16 Periods

III. MACHINE DRAWING 50 Periods

Unit 8: Orthographic projection of simple machine blocks. 25 Periods
Unit 9: Isometric Projection - Construction of isometric scale showing main divisions
of 10 mm and smaller divisions of 1 mm each. Isometric projection (drawn to
isometric scale) of regular plane figures - triangle, square, pentagon, hexagon,
circle and semi-circle with their surface parallel to HP or VP (keeping one side
either parallel or perpendicular to HP/VP). 25 Periods

PRACTICALS 30 Periods
1. 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 and/or any equivalent pertinent
software.
2. Drawing the following engineering curve through activities - ellipse (by trammel &
thread method) on the ground/ drawing sheet/ plywood/ cardboard etc.
3. Developing the following solids with the help of cardboard/ thick paper.
a) cube, cuboid
b) prisms & pyramids (triangular, square, pentagonal and hexagonal)
c) right circular cylinder and cone
4. Preparing the section of solids (prisms, pyramids, sphere, 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 or inclined to the base.
Note:
I. 10 practicals (minimum two each from aforementioned four points) are to be
assessed.
II. In all the practicals, drawing/sketching of the views should be incorporated and
evaluated accordingly.
III. The scheme of evaluation is as follows:
(a) Practicals (2) 15 Marks
(b) Drawing/ Sketch 05 Marks
(c) Viva-voce 05 Marks
(d) Sessional Work 05 Marks
Total 30 Marks
ACTIVITY
Industrial Visits (Two) to any industry/ manufacturing plant to acquaint the students
with the present - day methods & technology for better conceptual understanding can be
done by virtual tour of the factory/plant. The following links are given as an example for
same:
Jindal Industrial visit
https://www.youtube.com/watch?v=FYPbgr2Md-c
Manufacturing process of glass bottle
https://www.youtube.com/watch?v=A_M8WBJMcM0
Power Plant/ Virtually Reality Tour (3600)
https://youtu.be/34cXKIP39Pg
Machine Tools and Manufacturing Systems
https://www.youtube.com/watch?v=F2qXYyp0GjY