PROJECTION OF POINTS Which are the types of projections used in engineering drawing? A. Orthographic projections are done on HP, VP and PP planes. Since projections are done on a plane, these projections are 2 dimensional. Describe the position of points in the various quadrants and its projections with respect to the reference line xy. […]
mcqs: PROJECTION OF PLANES When a plane is perpendicular to both HP and VP, its front view will be (a) Parallel to x y (b) Perpendicular to x y (c) Neither parallel nor perpendicular to x y (d) None ANS: (b) When a plane is perpendicular to both HP and VP, its top view will […]
Mcq: PROJECTIONS OF A STRAIGHT LINE Line perpendicular to HP and parallel to VP will have its front view (a) Point (b) A line perpendicular to x y (c) A line parallel to x y (d) None ANS: (b) Line perpendicular to HP and parallel to VP will have its front view (a) A line perpendicular to x y […]
mcq: PROJECTION OF POINTS Projection of a point in first quadrant will be (a)Front view in VP (b) Front view in HP (c) Front view in PP (d) None ANS: (a) Projection of a point in first quadrant will be (a)Top view in VP (b)Top view in HP (c) Top view in PP (d)None ANS: (b) Projection of […]
ISOMETRIC PROJECTIONS ISOMETRIC PROJECTION It is 3-dimensional view of an object on a reduced scale. Sizes on this are 81.5 % of the true sizes. These are drawn from given front view, top view and side view. There are only true dimensions on the front, top and side views. ISOMETRIC AXES In this, three lines […]
INTERSECTION AND DEVELOPMENT OF SURFACES It means that one surface is entering another surface OR A surface is to be connected to another surface. It may be easy to connect any shape object into a plane wall. But it is very difficult for curved surfaces. For example a pipe is to be connected at right […]
SECTION OF SOLIDS SECTION OF SOLIDS Section views are a very important for designing an object or a machine. Section of solids improve clarity and reveal interior features of parts which are other wise not visible. Sections of solids are based on the use of an imaginary cutting plane to reveal the interior details. Its importance increases further […]
PROJECTIONS OF SOLIDS WHAT IS A SOLID? Every solid phase substance in the universal is 3-dimensional. Hence every solid substance is a solid. For example, book, wall, table, chair, fan, pen etc. TYPES OF SOLIDS—-TWO TYPES Polyhedral (Regular polyhedral Have number of faces, equal and regular, ir-regular polyhedral which unequal faces) Examples of polyhedral are: […]
PROJECTION OF OBLIQUE PLANES An oblique plane is one which is inclined to both HP and VP. These can be expressed as two different cases. CASE 1 The surface of the given oblique plane, say, is inclined at ϴ to HP and at Ф to VP and has one edge or diameter or diagonal parallel […]
Projections and Traces of a plane PROJECTION OF PLANES In actual practice, one is interested to draw the projections of a solid. But it is started with the projection of points. Number of points makes a line, then projections of a line is done. Lines form planes and hence then projections of a plane is […]