Automobile Science - Bharathidasan University

ENGINEERING DRAWING
UNIT -1 INTRODUCTION, PROJECTION OF POINTS AND LINES
Use of drawing instruments – BIS Convention and specifications-size, layout lettering
and dimensioning practice. Special curves-Ellipse – parabola Hyperbola involutes.
Introduction to orthographic projections – projection of points-projection of straight lines
in the first quadrant-line is parallel to both planes-inclined to one plane and parallel to
other – inclined to both the planes.
UNIT –II PROJE CTION OF PLANES AND SOLIDS
Projection of planes like polygonal lamina and circular lamina. Projection of simple
solids like cube, prism, pyramid, cylinder, cone. Auxiliary projections.
UNIT – III SECTION OF SOILDS AND ORTHOGRAPHIC PROJECTION
Section of solids like Prism, Pyramid, cylinder, cone in simple positions true shape and
section for above. Convention of pictorial views to orthographic view of simple machine
members.
UNIT – IV INTERSECTION OF SOLIDS AND DEVELOPMENT OF
SURFACES
Intersection of solids-prism to prism-cylinder to cylinder-cone to cylinder.Development
of surface-development of surface of solids-prism, pyramid, cylinder, cone and cut solids.
UNIT –V ISOMETRIC PROJECTION AND PERSPECTIVE
PROJECTION
Isometric Projection of simple solids like prism, pyramid, cylinder, cone and cut solids.
Perspective projection-visual ray method-vanishing point method-point, straight line,
lamina, prism, pyramid.
TEXT BOOK
1. K.V. Natarajan A text book of Engineering Drawing, Dhanalakhmi Publication,
Chennai
REFERENCE
1. N.D. Bhatt., Engineering Drawing, Charotar book stall, Anand
FIRST ALLIED COURSE-I (AC)
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