Projection of lines inclined to both planes pdf

Parallel to one of the principal plane, inclined to one of the principal plane and parallel to other, inclined to both principal planes. It cannot be viewed true size and shape in any of the principal views. Projection of straight lines and planes first angle. Projections of straight line when inclined to both hp and vp. This experiment is designed to familiarize you with the concept of force as a vector quantity. The sides of the cube and all planes parallel to them are isometric planes. Sep 20, 2008 25 responses to projections of straight lines mid point problem.

Trend the direction of a line on a horizontal plane. 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. The other end b is 60 mm above the hp and 45 mm in front of vp. For any other position first assume the given line parallel to both the planes. Projections of planes parallel to one of the reference planes. Solids of revolution when some of the plane figures are revolved about one. Engineering drawing basic interview question and answers. Therefore the traces of lines are determined in the following positions of the lines. Tips for projection of straight linesiiinclined to both. Draw the projections of ab and show its inclinations with the h. Pdf ge8152 engineering graphics lecture notes, books. Its end p is 10 mm above hp and 10 mm in front of vp.

Problems involving projection of points, projection of two points situated in different quadrants. Engineering drawing mostly asked mcq pdf part five for rrb alptechnician cbt 2. Line inclined to one plane and parallel to the other exercises xa 105. Line inclined to one plane and parallel to the other plane. Suppose that the cart in figure 51 has a mass of 1. Two lines intersect at a point common to both the lines. In orthographic projection, these two principal planes are used and are referred to as the. The top view is a line inclined at an angle to xy line. Inclination of its surface with one of the reference planes will be given. Here we are providing mostly asked mcq pdf of engineering drawing for rrb alptechnician cbt 2 stage exam,it will be provide help to aspirants who are going to appear this exam. When a line is inclined to both hp and vp, the apparent inclination of the line to both the projection planes will be different from the actual inclinations. Inclination of one of its edges with other reference plane will be given hence this will be a case of an object inclined to both reference planes. Lecture 12 projection of line inclined to both the plane free download as powerpoint presentation.

Here various problems along with actual pictures of those situations are given for you to understand. In two adjacent views the end points of the segment lie on projection lines that. A straight line 55 mm long makes an angle of 30 deg to the hp and 45 deg to the vp. Well be positioning this line in different ways that is it may be parallel or inclined to either or both the reference planes hpvp and then draw. Projections of oblique planes are obtained in three stages.

Mar 14, 2017 projection of lines sh 12 engineering graphics f. Oct 24, 2016 a straight line 55 mm long makes an angle of 30 deg to the hp and 45 deg to the vp. Tips for projection of straight linesiiinclined to both planes. The lines not parallel to axes 1, 2 and 3 are nonisometric lines. Section of above solids in simple vertical position axis perpendicular to hp alone by planes either inclined to hp or vp alone. It is used to draw circles and arcs both in pencil and ink. Lines in 3d descriptive geometry carnegie mellon university. To see tv clearly, hp is rotated 900 downwards, hence it comes below xy. It is at an angle inclined to the horizontal and profile planes and therefore it appears foreshortened in the top and side views.

The lamina is tilted about the edge on which it rests till its plane surface is inclined to hp at 45 deg. These letters are used to represent a point, ends of a straight line, corners of a probability measures on metric spaces pdf solid, etc. Principles of orthographic projections, conventions, first and third angle projections, projection of points, projection of lines, lines inclined to single plane, lines inclined to both the planes, true lengths and traces. Inclined lines parallel to one plane of projection and inclined in the other tow planes. Projection of lines projection of intersecting lines when the lines are intersecting, the point of intersection lies on both the lines and hence these lines have no shortest distance between them. Co 1 draw the projection of points and lines located in different quadrants. Similarly the projected length of the lines on to the planes will not be the same as the true length f the line.

Inclined plane an inclined plane is perpendicular to one plan of projection and inclined to adjacent planes. The lines in which the planes meet the reference planes i. Projections of a plane inclined to both hp and vp problem from tj a rectangular plate of side 50. The inclined plane will be used to demonstrate how one force vector, the weight, can be decomposed into two component forces, one parallel to the plane and one perpendicular. Lines inclined to one plane and parallel to the other. Two pieces of information, a trend and a plunge, are necessary to describe the orientation of a line in space.

In this tutorial we gonna be discussing as to how the orthographic projection of a line can be constructed when it is inclined to both hp and vp. A hexagonal plate of side 30mm is resting on one of its sides on vp and inclined at 40. The point c is 20mm above hp and 30mm in front of vp. Pdf ge8152 engineering graphics eg books, lecture notes. A line ab 50 mm long has its end a 20 mm in front of vp and 30 mm above hp. Lecture 12 projection of line inclined to both the plane.

Section of above solids in simple vertical position axis perpendicular to hp alone by planes either inclined to hp or vp alone true shape of section. Projections of lines inclined to both the planes 107. The end a is 12 mm in front of the vp and 15 mm above hp. Unitii orthographic projection, projection of planes classes. Engineering drawing ed chapter wise video lectures. Actual projections in top and front views are drawn in thick lines. Lines inclined to both the reference planes excluding traces of lines and simple application based problems on projection of lines problem 1 based on inclined to. All lines parallel to axes 1, 2 and 3 are isometric lines. The simplest position a straight line occupies in a space is, it is parallel to both v. The isometric lines are angled at 30 the lines not parallel to axes 1, 2 and 3 are nonisometric lines.

A line pq, 75 mm long lies on hp with its end p at 40 mm in front of vp. It does appear as an edge in the view where it is perpendicular to the projection plane. All projection lines are orthogonal to the projection plane. Parallel to one of the principal plane, inclined to one of the principal plane and. A line ab has its end a 20 mm above the hp and 30 mm in front of vp. Determination of true length and true inclinations of straight lines from the projections not involving traces projection of plane surfaces like rectangle, square, pentagon, hexagon, circle surfaces inclined to one reference plane. Notice that the surface a appears as a line in the front orthographic view. The end p is both in hp and vp, and 40 mm to the right of lpp. A line inclined to both hp and vp pictorial presentation 5.

The book provides all aspects and detailed study of engineering drawing plane and solid geometry, a core subject for all branches of engineering study, presented in a lucid manner and easytofollow style. Oct 12, 20 projection of planes plane inclined to both hp a. Here planes are inclined to both the reference planes. The line is parallel to vp and inclined to hp at 30. Line inclined to both hp and vp problem 1 a line cd measuring 80mm is inclined at an angle of 30 to hp and 45 to vp. Draw its projections and determine the true length and apparent inclinations.

Lines perpendicular to one plane and parallel to the other. Projections of a line kept parallel to both hp and vp problem 3 a line cd 30mm long is parallel to both the planes. Line parallel to the horizontal plane inclined to the vertical plane. The planes which are inclined to both the reference planes i. A line parallel to the horizontal plane of projection, and one of the other planes, while being the third plane horizontal line a line parallel to both the frontal and profile planes, and perpendicular to. The above position resulting in straight line as a top view and front view.