PROJECTION INTRO

Question 1

What is the meaning of projectors?

Answer 1

Projectors means image and it is comparable to the image formed on the retina of the eyes.

Question 2

To what can projection be compared in the context of cinema?

Answer 2

Projection can also be compared to the image of the object on the screen, where the film is projected (by the cinema projector) by the light rays.

Question 3

How can projection or images be formed between the eyes and the object?

Answer 3

Projection or images can also be formed in between the eyes and the object by keeping a transparent plane.

Question 4

Line of Sight

Answer 4

An imaginary ray of light between an observer’s eye and an object-

Question 5

Plane of projection

Answer 5

An imaginary flat plane upon which the image created by the line of sight is projected -

Question 6

Projection

Answer 6

The image produced by connecting the points where the lines of sight pierce the projection plane -

Question 7

parallel projection.

Answer 7

If the distance from the observer to the object is infinite, then the projection lines are parallel and the drawing is classified as a parallel projection.

Question 8

perspective projection/Convergent Projection.

Answer 8

If the distance from the observer to the object is finite, then the projection lines are not parallel and the drawing is classified as a perspective projection/Convergent Projection.

Question 9

Orthographic projection

Answer 9

A parallel projection technique in which plane of projection is perpendicular to the parallel line of sight- Orthographic projection

Question 10

Multi View Projection

Answer 10

An orthographic parallel projection technique where the object is oriented such that only two of its dimensions are shown - Multi View Projection

Question 11

Frontal plane of projectio

Answer 11

The plane onto which the Front View (FV) of the multi-view drawing is projected-Frontal plane of project
ion

*The front view (Elevation) of an object shows-width and height dimensions

Question 12

Horizontal plane of projection

Answer 12

The plane onto which the Top View of the multi-view drawing isprojected

• The top view (Plan) of an object shows-width and LENGTH dimensions.

Question 13

Profile plane of projection

Answer 13

The plane onto which the Side View of the multi-view drawing is projected

*The side view of an object shows-Length/width and height dimensions

Question 14

Sectional drawings

Answer 14

Sectional drawings are multi-view technical drawings that contain special views of a part or parts, that reveal Interior features