ENGINEERING DRAWING AND GRAPHICS
Group A
Projection graphics. Objects, condition and methods of projection; Gnomonic, stereographic and orthographic projections; Coordinate systems and grid scales, scale distortion, and conditions of conformality and equivalence. Axonometric projections; Isometric; Dimetric and oblique projections; Conical equivalent and. equivalent cylindrical projections.
Spatial graphics. Basic principles of multiview drawings and Monge's projections; Points in quadrants and octants; Projections of lines and traces of lines; True relative positions of two planes and of a straight line and a plane; Method of revolution. Projections of polyhedrons, curved lines and surfaces; Contour mapping of curved surfaces; Plane sections .of polyhedrons and curved surfaces; Intersection of planes and surfaces and lines and surfaces; Development of curved surfaces. Affine correspondence and its applications.
Product graphics. Introduction to various product features; identification of functional and non-functional, surfaces; Selection of datum; Tolerancing of dimensions. Compatibility of product elements for manufacturing and assembly requirements; Sectional and auxiliary views. .
Computer graphics. Basic principles for interactive computer graphics; Systems and peripherals required; Point plotting technique; Line drawing displays; Modelling of two and three-dimensions; Display of solid objects.
Group B
Drafting principles. Manipulation and use of drafting equipments and instruments; Exercises in instrumental drawing; Introduction to drafting codes as per ISO and BIS; Technical lettering.
Drawing exercise. Drafting problems involving consideration of - stereo metric features; Toleranced dimensioning; partial views and sectioning, auxiliary sections, schematic product symbols. Drafting exercises involving (a) preparation of details, (b) aggregation for assembly, (c) exploded machine kinematics, etc.



