Knowledge in Engineering drawing
ENGINEERING GRAPHICS MID SEMESTER QUESTION PAPER 2019 {DBATU}
This pdf contains the question paper of ENGINEERING GRAPHICS end semester 2019. Also the question paper with schematic marking schemes is given. This paper is of DR. BABASAHEB AMBEDKAR TECHNOLOGICAL UNIVERSITY by MECHANICAL DEPARTMENT.
Yash Ajabe
ENGINEERING DRAWING N.D.BHATT TEXTBOOK
This pdf is TEXTBOOK or REFERENCE BOOK for ENGINEERING DRAWING /GRAPHICS. This book is of author N.D.BHATT. This book is mainly preferred at DR. BABASAHEB AMBEDKAR TECHNOLOGICAL UNIVERSITY by MECHANICAL DEPARTMENT.
Elements of conic section
General Method (Eccentricity method). Concentric circles method. Oblong (Parallelogram) method. Rectangle method. Intersecting Arcs method. Construction : Draw the principal axis line “AB”.(with Some unknown length) Draw a vertical line “CD” to represent directrix. Mark focus F on the axis “AB” such that AF = 50mm Divide AF into five equal divisions. Mark the vertex “V1” on the third division point from A. Draw a vertical line on “V1” (with some length). Cut the vertical line with “V1 to F” as radius length with V1 as Centre for point-E. Draw a line by passing through the point A and E (with some length). Draw a line from the focus F, inclined at 45° to the axis AB to intersect the line AE produced at point V2. Draw perpendicular line from point V2 to meet the axis line AB at point V2. (The line V1 to V2 represents the major axis of the ellipse. Make some divisions in between V1 to V2 (major axis). Ex- 8 divisions Draw perpendicular line on 8 divisions. (keep notations as 1-1’ 2-2’….8-8’ etc) With Centre F and radius equal to 1-1’ , draw arcs to intersect the perpendicular line 1-1’ at points P1 and P1’. Similarly mark some more points say 2,3,4 etc , this will give some loci points of the ellipse like P2-P2’ . P3-P3’ …etc Join all the loci points of the ellipse and obtain the required ellipse.
Soumya Somayajula
Questionnaire On Engineering Drawing
1.List and sketch atleast four types of lines indicating their purpose and applications. 2.What are the different types of letters available for lettering? 3.What is meant by dimensioning? What are the two systems of placing dimensions on a drawing? 1.ALIGNED SYSTEM 2..UNI-DIRECTIONAL SYSTEM 4.Elements of dimensioning. GEOMETRICAL CONSTRUCTIONS & SCALES 5.Discuss the method of dividing a line into any number of equal parts.
Engineering Cycloid Curves
ENGINEERING CURVES CYCLOID: A cycloid is a curve generated by a fixed point on the circumference of circle, when it rolls along a straight line without slipping. INVOLUTE: IT IS A LOCUS OF A FREE END OF A STRING WHEN IT IS WOUND ROUND A CIRCULAR POLE. Solution Steps: 1) From center C draw a horizontal line equal to D distance. 2) Divide D distance into 8 number of equal parts and name them C1, C2, C3__ etc. 3) Divide the circle also into 8 number of equal parts and in clock wise direction, after P name 1, 2, 3 up to 8. 4) From all these points on circle draw horizontal lines. (parallel to locus of C) 5) With a fixed distance C-P in compass, C1 as center, mark a point on horizontal line from 1. Name it P. 6) Repeat this procedure from C2, C3, C4 upto C8 as centers. Mark points P2, P3, P4, P5 up to P8 on the horizontal lines drawn from 2, 3, 4, 5, 6, 7 respectively. 7) Join all these points by curve. It is Cycloid.
PROJECTIONS OF PLANES
This chapter deals with 2D- dimensional objects called planes. Planes have length, breadth and negligible thickness. The surface of a plane may be in one of the following positions as shown in fig. Parallel to H.P (& perpendicular to V.P). Parallel to V.P (& perpendicular to H.P). Perpendicular to both H.P & V.P. Inclined to H.P & perpendicular to V.P. Inclined to V.P & perpendicular to H.P. Inclined to both H.P & V.P.
Projection Of Points & Lines
Projection Of Points: Projection Orthographic projection Projection of points Projection Of Lines: Projection of straight-lines Inclined to planes Inclined to both planes The word projection is a ‘Latin’ origin means to “throw forward”. It is defined as an image of an object throw forward on to a plane by means of straight-lines or visual rays. Theory Of Projection : Observer Object Visual Rays Plane
ISOMETRIC TO ORTHOGRAPHIC PROJECTION
Orthographic projection and Isometric projection are two ways of representing the same object. ISOMETRIC PROJECTON: Isometric projection of an object is how the object looks to naked eye when seen from a distance. When seen from a distance the object doesn't look as it actually is, it looks smaller and so is the isometric projection of the object. ORTHOGRAPHIC PROJECTION: Orthographic projection gives the actual measurements of the object. It can only be understood by people who know engineering drawing. Imagine that the object is floating in air. Now you show your torch towards the object on each side, the shadow caught on the wall is orthographic view of that side. This is used for manufacturing purposes.
COMPUTER AIDED DRAFTING / DESIGNING (CAD)
Central Processing Unit (CPU) – 1.8Ghz processor speed Main Memory – RAM= 4GB (min) with 1GB graphic-card Secondary Storage Device – Hard-disk= 160GB (min) Input Devices- Mouse, Keyboard, Joy-stick etc Out-put Devices- Monitor, printer, plotter etc Skilled person is required to operate CAD software CAD software packages are very costly CAD hardware installation setup is very costly Uninterrupted power backup is required for CAD Hardware setup
I-Year syllabus of physics semester (SEM-A)
This document contains syllabus of physics,Basic Electrical Engineering,basic civil engineering,Mathematics I , Engineering Drawing.
Pradhumn Sharma
Engineering Drawing Unit 2 projection of plane
projection of planes ,inclined planes -Auxillary planes Notes with solved problems ,Unit 2 projection of plane full part covered with sixteen questions.
Engineering Drawing mid term 2 test papers
this document contains mid term 2 test papers of Engineering Drawing , papers are standard. and very useful.