## Machine Drawing Questions and Answers Part-1

1. Axonometric view is a type of _____________
a) Orthographic view
b) Pictorial view
c) Oblique View
d) Pictorial and Oblique View

Explanation: Views are classified as pictorial and orthographic view and the pictorial view is classified into three subgroups namely perspective axonometric, oblique and orthographic views. Axonometric view is that type of pictorial view in which the line of site is perpendicular to the picture plane.

2. In an axonometric view, line of site are _____________
a) Perpendicular to plane of projection with all three faces equally inclined to picture plane
b) Perpendicular to plane of projection with all three faces need not be equally inclined to picture plane
c) Inclined to the plane of projection at certain angle
d) One face of the object needs to be parallel

Explanation: An axonometric view is the type of pictorial view in which lines of the sight are perpendicular to the plane of projection. But all three faces need not be equally inclined to picture plane. The one with all three faces equally inclined to the picture plane is termed as isometric view.

3. In which of the following view the vanishing point is assumed to be located at infinity?
a) Perspective view
b) Orthographic view
c) Axonometric view
d) Perspective with one face of object parallel to the plane of picture

Explanation: Axonometric view drawn in such a way that the faces if an object is perpendicular to the line of sight and thus the vanishing rays are parallel and hence vanishing point are at infinity, in orthographic view there is no matter of vanishing point. A perspective view always meant to have a vanishing point at some point

4. In which of the below given views, the picture plane is the same as the plane of the projection?
a) Pictorial view
b) Perspective view
c) Orthographic view
d) Oblique view

Explanation: Since an orthographic view is drawn by projecting the faces of an object on the required plane, thus plane of projection is parallel to the picture plane and lie in the picture plane. Since pictorial view are always drown with more than one face at one time thus cannot have picture plane as the plane of projection.

5. Projectors are referred to_____________
a) Plane of projection
b) Picture plane
c) Rays intersecting the corner and edges of the object
d) Line of site

Explanation: Projectors are rays which intersect at the corner of an object and aligned along the edges of the object. They are not plane, so plane of projection and picture plane cannot be referred and line site is not known as projector.

6. A designer is looking to draw the side view of a car in perspective, which of the below given choice is the best?
a) Choosing vanishing points in the paper area
b) Choosing a single vanishing point at infinity
c) Choosing a three-point perspective
d) Choosing an orthographic view

Explanation: Generally two point or one point perspective is used to draw a car in perspective drawing; three-point perspective is used in architectural drawing. Since here side view is required, choosing a single vanishing point at infinity is going to give the best view.

7. The principal plane chosen in an orthographic view of a machine drawing is/are ____
a) Horizontal, vertical and side plane
b) Horizontal and side plane only
c) Vertical and horizontal plane only
d) Only vertical plane

Explanation: An orthographic view is drowned of the object using three main views i.e. top view, side view and a front view, so three principal plane is drown named horizontal, vertical and side plane. Top view is termed as plan, side view as profile and front view as elevation

8. A pictorial view must show __________ of a machine.
a) All the details necessary for its construction
b) The outside appearance
c) True shape of the machine
d) All the faces of the machine

Explanation: A pictorial view is a view which is seen from an angle such that its three faces are visible. It shows only the outside appearance of a machine. It does not always show all the details necessary for its construction. It may not show even the true shape of the machine.

9. Side view is drawn by viewing from either the left or right side, whichever is _________
b) Suitable to draw
c) Having longest dimensions