GE3251 ENGINEERING GRAPHICS Anna University Syllabus Regulation 21

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 GE3251                       ENGINEERING GRAPHICS                   L T P C2 0 4 4

COURSE OBJECTIVES:
The main learning objective of this course is to prepare the students for:

  • Drawing engineering curves.
  • Drawing a freehand sketch of simple objects
  • Drawing orthographic projection of solids and section of solids
  • Drawing development of solids
  • Drawing isometric and perspective projections of simple solids

CONCEPTS AND CONVENTIONS (Not for Examination)
Importance of graphics in engineering applications — Use of drafting   instruments — BISconventions and specifications — Size, layout and folding of drawing sheets — Lettering anddimensioning.

  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 OF POINTS, 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 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).

UNIT V           ISOMETRIC AND PERSPECTIVE PROJECTIONS             6+12

 
Principles of isometric projection — isometric scale — isometric projections of simple solids and truncated solids - Prisms, pyramids, cylinders, cones- combination of two solid objects in simple vertical positions - Perspective projection of simple solids - Prisms, pyramids and cylinders by visual ray method.

 
Practicing three dimensional modeling of isometric projection of simple objects by CAD Software (Not for examination) 

COURSE OUTCOMES:
On successful completion of this course, the student will be able to 

  • Use BIS conventions and specifications for engineering drawing.
  • Construct the conic curves, involutes and cycloid.
  • Solve practical problems involving projection of lines
  • Draw the orthographic, isometric and perspective projections of simple solids.
  • Draw the development of simple solids.
TEXT BOOKS:
  1. Bhatt N.D. and Panchal V.M., “Engineering Drawing”, Charotar Publishing House,53rd Edition, 2019.
  2. Natarajan K.V., “A Text Book of Engineering Graphics”, Dhanalakshmi Publishers, Chennai, 2018.
  3. Parthasarathy, N. S. and Vela Murali, “Engineering Drawing”, Oxford University Press, 2015.
REFERENCES:
  1. Basant Agarwal and Agarwal C.M., “Engineering Drawing”, McGraw Hill, 2nd Edition, 2019.
  2. Gopalakrishna K.R., “Engineering Drawing” (Vol. I&II combined), Subhas Publications,Bangalore, 27th Edition, 2017.
  3. Luzzader, Warren.J. and Duff,John M., “Fundamentals of Engineering Drawing with an introduction to Interactive Computer Graphics for Design and Production, Eastern Economy Edition, Prentice Hall of India Pvt. Ltd, New Delhi, 2005.
  4. Parthasarathy N. S. and Vela Murali, “Engineering Graphics”, Oxford University, Press, New Delhi, 2015
  5. Shah M.B., and Rana B.C., “Engineering Drawing”, Pearson Education India, 2nd Edition, 2009.
  6. Venugopal K. and Prabhu Raja V., “Engineering Graphics", New Age International (P) Limited,2008.     
 
    
 

 

 

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