India · CBSE Learning Outcomes
Class 11 Engineering Graphics.
Engineering Graphics is a fundamental language of engineers and designers. This course introduces Class 11 students to the principles of orthographic projection, solid geometry, and machine drawing, fostering spatial visualization and technical communication skills in alignment with the CBSE curriculum.
01Plane Geometry and Engineering Drawing Basics
Introduction to basic drawing instruments, standard conventions, and the construction of complex geometric figures and engineering curves.
Introduction to basic drawing instruments, types of lines, and construction of regular polygons. Students will learn the foundational conventions of engineering drawing.
Techniques for drawing tangents to circles and arcs connecting lines and circles. This topic develops skills in creating smooth transitions in mechanical profiles.
Construction of ellipses, parabolas, and hyperbolas using various methods. Students explore the mathematical and graphical properties of conic sections.
02Solid Geometry
Exploration of 3D spatial visualization through the orthographic projection of points, lines, planes, and right regular solids.
Understanding the four quadrants and projecting points and lines inclined to one or both reference planes. This forms the basis of 3D spatial visualization.
Drawing projections of 2D planes (triangles, squares, pentagons, hexagons, circles) inclined to reference planes. Students learn to visualize surface orientations.
Projecting 3D objects like prisms, pyramids, cylinders, and cones in various positions. Emphasis is placed on solids with axes inclined to one reference plane.
Visualizing internal features by cutting solids with section planes perpendicular to one reference plane. Students will draw sectional views and true shapes of sections.
03Orthographic Projections of Machine Blocks
Application of orthographic projection principles to draw multi-view and sectional representations of simple machine blocks.
Detailed study of First Angle and Third Angle projection methods. Students learn the standard symbols and layout of multi-view drawings.
Converting 3D pictorial views of simple machine blocks into 2D orthographic views. Focus is on hidden lines and center lines.
Applying sectioning techniques to complex machine blocks to reveal internal details. Students practice full and half sections.
04Isometric Projections
Techniques for creating 3D pictorial drawings using isometric scales, focusing on plane figures, simple solids, and truncated solids.
Introduction to isometric axes, lines, and planes. Students learn to construct and use an isometric scale to draw isometric projections.
Drawing isometric projections of 2D shapes like triangles, polygons, and circles. Students learn the four-center method for isometric circles.
Creating 3D isometric projections of prisms, pyramids, cylinders, and cones. The focus is on solids resting on their base on the HP.
Advanced isometric drawing involving cut solids and frustums of pyramids and cones. Students synthesize their knowledge of sections and isometric scales.