Learn  Engineering graphic easily with all practical and University solved problems.

GE3251 ENGINEERING GRAPHICS L T P C
2 0 4 4
COURSE OBJECTIVES:
The main learning objective of this course is to prepare the students for:
1. Drawing engineering curves.
2. Drawing freehand sketch of simple objects.
3. Drawing orthographic projection of solids and section of solids.
4. Drawing development of solids
5. Drawing isometric and perspective projections of simple solids.
CONCEPTS AND CONVENTIONS (Not for Examination)
Importance of graphics in engineering applications - Use of drafting instruments - BIS conventions
and specifications — Size, layout and folding of drawing sheets — Lettering and dimensioning.
UNIT I PLANE CURVES AND FREEHAND SKETCHING 6+12
Basic Geometrical constructions, Curves used in engineering practices: Conics — Construction
of ellipse, parabola and hyperbola by eccentricity method — Construction of cycloid —
construction of involutes of square and circle — Drawing of tangents and normal to the above
curves.
UNIT II PROJECTION OFPOINTS, LINES AND PLANE SURFACE 6+12
Orthographic projection- principles-Principal planes-First angle projection-projection of points.
Projection of straight lines (only First angle projections) inclined to both the principal planes -
Determination of true lengths and true inclinations by rotating line method and traces. Projection
of planes (polygonal and circular surfaces) inclined to both the principal planes by rotating object
method.
UNIT III PROJECTION OF SOLIDS 6+12
Projection of simple solids like prisms, pyramids, cylinder, cone and truncated solids when the axis
is inclined to one of the principal planes and parallel to the other by rotating object method.
Visualization concepts and Free Hand sketching: Visualization principles —Representation of
Three Dimensional objects — Layout of views- Freehand sketching of multiple views from pictorial
views of objects.
Practicing three dimensional modeling of simple objects by CAD Software (Not for examination)
UNIT IV PROJECTION OF SECTIONED SOLIDS AND DEVELOPMENT OF
SURFACES 6 +12
Sectioning of above solids in simple vertical position when the cutting plane is inclined to the one
of the principal planes and perpendicular to the other — obtaining true shape of section.
Development of lateral surfaces of simple and sectioned solids — Prisms, pyramids cylinders and
cones.
Practicing three dimensional modeling of simple objects by CAD Software (Not for examination).