Question 1

What is the rectangle in the world defining the region that is to be displayed?

Accepted Answer

A) World co-ordinate system 
B) Screen co-ordinate system 
C) World window 
D) Interface window

Question 2

When every entity of a geometric model remains parallel to its initial position, the transformation is called as

Accepted Answer

A) User Coordinate System 
B) World Coordinate System 
C) Screen Coordinate System 
D) None of the above

Question 3

General pivot point rotation can be expressed as

Accepted Answer

A) T(zr,yr).R(?).T(-zr,-yr) = R(xr,yr,?) 
B) T(xr,yr).R(?).T(-xr,-yr) = R(xr,yr,?). 
C) T(xr,yr).R(?).T(-xr,-yr) = R(zr,yr,?) 
D) T(xr,yr).R(?).T(-xr,-yr) = R(zr,yr,?).

Question 4

In Coordinates, a points in n-dimensional space is represent by (n+1) coordinates.

Accepted Answer

A) Scaling 
B) Homogeneous 
C) Inverse transformation 
D) 3D Transformation

Question 5

If point are expressed in homogeneous coordinates then the pair of (x, y) is represented as

Accepted Answer

A) (x', y', z') 
B) (x, y, z) 
C) (x', y', w') 
D) (x', y', w)

Question 6

The rotation axis that is perpendicular to the xy plane and passes through the pivot point is known as

Accepted Answer

A) Rotation 
B) Translation 
C) Scaling 
D) Shearing

Question 7

If the value of Sx=1 and Sy=1 then

Accepted Answer

A) Reduce the size of object 
B) Distort the picture 
C) Produce an enlargement 
D) No change in the size of an object

Question 8

For 2D transformation the value of third coordinate i.e. w (or h) =?

Accepted Answer

A) 1 
B) 0 
C) -1 
D) Any value

Question 9

To generate a rotation , we must specify

Accepted Answer

A) Rotation angle ? 
B) Distances dx and dy 
C) Rotation distance 
D) All of the mentioned

Question 10

What is the determinant of the pure reflection matrix?

Accepted Answer

A) 1 
B) 0 
C) -1 
D) 2

Question 11

The process of mapping a world window in World Coordinates to the Viewport is called Viewing transformation.

Accepted Answer

A) True 
 B)False

Question 12

Polygons are translated by adding to the coordinate position of each vertex and the current attribute setting.

Accepted Answer

A) Straight line path 
B) Translation vector 
C) Differences 
D) Only b

Question 13

The general homogeneous coordinate representation can also be written as

Accepted Answer

A) (h.x, h.y, h.z) 
B) (h.x, h.y, h) 
C) (x, y, h.z) 
D) (x,y,z)

Question 14

Which transformation distorts the shape of an object such that the transformed shape appears as if the object were composed of internal layers that had been caused to slide over each other?

Accepted Answer

A) Rotation 
B) Scaling up 
C) Scaling down 
D) Shearing

Question 15

Which of the following is NOT true? Image formed by reflection through a plane mirror is

Accepted Answer

A) of same size 
B) same orientation 
C) is at same distance from the mirror 
D) virtual

Question 16

A line AB with end points A (2, 1) & B (7, 6) is to be moved by 3 units in x-direction & 4 units in y-direction. Calculate new coordinates of points B.

Accepted Answer

A) (10, 2) 
B) (2, 10) 
C) (10, 10) 
D) (10, 5)

Question 17

Panning is a technique in which users can change the size of the area to be
viewed in order to see more detail or less detail.

Accepted Answer