## What is projection solid?

A solid is a three dimensional object having length, breadth and thickness. It is Completely bounded by a surface or surfaces, which may be curved or plane. The shape of a solid is described orthographically by drawing its two orthographic projections, usually, on the two principal planes of projection i.e., HP and VP.

## What is projection of solids in engineering drawing?

This is the simplest position in which a solid can be placed. When the solid is placed with the base on HP position, in the top view, the base will be projected in its true shape. Hence, when the base of the solid is on HP, the top view is drawn first and then the front view and the side views are projected from it.

Why do you draw projection of a solid?

Therefore, the projection of a solid on the plane to which its axis is perpendicular will show the true shape and size of its base. Hence, when the axis is perpendicular to the ground, i.e. to the H.P., the top view should be drawn first and the front view projected from it.

What are the types of solids in engineering drawing?

In orthographic projection, minimums of two views are necessary to represent a solid. Front view is used to represent length and height and the top view is used to represent length and breadth….Polyhedra

• Regular Polyhedra.
• Prisms.
• Pyramids.

### What is isometric projection solid?

Isometric projection is a method for visually representing three-dimensional objects in two dimensions in technical and engineering drawings. It is an axonometric projection in which the three coordinate axes appear equally foreshortened and the angle between any two of them is 120 degrees.

### What are the possible position of solids?

Engineering Drawing Questions and Answers – Projection of Solids in Simple Position – 1

Position of solids Front View
1. Square pyramid- axis perpendicular to V.P Rectangle
2. Cylinder- base parallel to profile plane Circle
3. Triangular prism – axis perpendicular to H.P Square
4. Cone- base parallel to V.P Triangle

What is isometric projection in engineering drawing?

ISOMETRIC PROJECTION. • It is a method of producing pictorial view of an object showing all three faces of the object simultaneously. •It is a type of parallel projection. •It is a type of axonometric projection.

What is section of solid?

SECTIONING A SOLID. An object ( here a solid ) is cut by some imaginary cutting plane to understand internal details of that object. The action of cutting is called SECTIONING a solid & The plane of cutting is called SECTION PLANE.

#### What is difference between first angle and third angle projection?

To get the first angle projection, the object is placed in the first quadrant meaning it’s placed between the plane of projection and the observer. For the third angle projection, the object is placed below and behind the viewing planes meaning the plane of projection is between the observer and the object.