Mcq:3 Unit and 4 Unit
1.A translation is applied to an object by
a) Repositioning it along with straight line path b) Repositioning it along with circular
path
c) Both a and b
d) None of the above
answer :a
2.We translate a two-dimensional point by adding a)
Translation difference b) Translation
distances c) Translation
points d) All of the mentioned
answer :b
3.The translation distances (dx, dy) is called as
a) Translation vector
b) Shift vector c) Both a
and b d) Neither a nor b
answer :c
4.The basic geometric transformations are
a) Translation b)
Rotation c) Scaling d) All of the mentioned
answer :d
5.A three dimensional graphics has a) Three axes
b) Two axes c) Both a & b d) None of these
answer :A
6.Two consecutive scaling transformation t1 and t2 are
a) Additive b) Multiplicative c) Subtractive d) None of these
answer :b
7.What are the types of polygon a)
Convex polygon b) Concave polygon c) Both a & b d) None of these
answer :c
8.___________is a simple object space algorithm that removes
about half of the total polygon in an image as about half of the faces of
objects are back faces a) Wire
frame model b) Constructive solid
geometry methods c) Isometric
projection
d) Back face removal
answer :d
9.A three dimensional graphics has
a) Three axes b)
Two axes c) Both a & b d) None of these
answer :A
10.The object refers to the 3D representation through
linear, circular or some other representation are called
a) Quadric surface b) Sweep representation c) Torus
d) None of these
answer :b
11. A translation is applied to an object by
a) Repositioning it along with straight line path
b) Repositioning it along with circular path
c) Only b
d) All of the mentioned
answer :A
a) Repositioning it along with straight line path
b) Repositioning it along with circular path
c) Only b
d) All of the mentioned
answer :A
12. We translate a two-dimensional point by adding
a) Translation distances
b) Translation difference
c) X and Y
d) Only a
View Answer
a) Translation distances
b) Translation difference
c) X and Y
d) Only a
View Answer
Answer: d
Explanation: We can translate 2D point by adding translation distances dx and dy.
Explanation: We can translate 2D point by adding translation distances dx and dy.
13. The translation distances (dx, dy) is called as
a) Translation vector
b) Shift vector
c) Both a and b
d) Neither a nor b
View Answer
a) Translation vector
b) Shift vector
c) Both a and b
d) Neither a nor b
View Answer
Answer: c
Explanation: The translation distances (dx, dy) from its original position is called as translation vector or shift vector.
Explanation: The translation distances (dx, dy) from its original position is called as translation vector or shift vector.
14. In 2D-translation, a point (x, y) can move to the new
position (x’, y’) by using the equation
a) x’=x+dx and y’=y+dx
b) x’=x+dx and y’=y+dy
c) X’=x+dy and Y’=y+dx
d) X’=x-dx and y’=y-dy
View Answer
a) x’=x+dx and y’=y+dx
b) x’=x+dx and y’=y+dy
c) X’=x+dy and Y’=y+dx
d) X’=x-dx and y’=y-dy
View Answer
Answer: b
Explanation: By adding translation distance dx and dy to its originsl position (x, y) we can obtain a new position (x’, y’).
Explanation: By adding translation distance dx and dy to its originsl position (x, y) we can obtain a new position (x’, y’).
15.The two-dimensional translation equation in the matrix
form is
a) P’=P+T
b) P’=P-T
c) P’=P*T
d) P’=p
View Answer
a) P’=P+T
b) P’=P-T
c) P’=P*T
d) P’=p
View Answer
Answer: a
Explanation: The 2D translation equation is P’=P+T.
Explanation: The 2D translation equation is P’=P+T.
16. _________ is a rigid body transformation that moves
objects without deformation.
a) Rotation
b) Scaling
c) Translation
d) All of the mentioned
View Answer
a) Rotation
b) Scaling
c) Translation
d) All of the mentioned
View Answer
Answer: c
Explanation: Translation a rigid body transformation that moves objects without deformation.
Explanation: Translation a rigid body transformation that moves objects without deformation.
17. A straight line segment is translated by applying the
transformation equation
a) P’=P+T
b) Dx and Dy
c) P’=P+P
d) Only c
View Answer
a) P’=P+T
b) Dx and Dy
c) P’=P+P
d) Only c
View Answer
Answer: a
Explanation: A straight line segment is translated by applying the transformation equation P’=P+T to each of line endpoints.
Explanation: A straight line segment is translated by applying the transformation equation P’=P+T to each of line endpoints.
18. Polygons are translated by adding __________ to the
coordinate position of each vertex and the current attribute setting.
a) Straight line path
b) Translation vector
c) Differences
d) Only b
View Answer
a) Straight line path
b) Translation vector
c) Differences
d) Only b
View Answer
Answer: d
Explanation: None.
Explanation: None.
19.In a convex polygon, each of the interior angles is
less than ____degrees.
a). 90 b). 180
c). 360 d). 45
20.Transpose of a column matrix is________________
a). Zero matrix
b). Identity matrix c). Row matrix d). Diagonal matrix
21.The most basic transformation that are applied in
three-dimensional planes are
a).Translation
b).Scaling c).Rotation d).All
of these
22._________are the three dimensional analogs of quad
trees
a).Quadric b). Octrees c).Geometry d). None of these
23.Sutherland-Hodgeman clipping is an example
of_________________ algorithm.
a) .Line clipping
b) .Polygon clipping c) .Text clipping d) .Curve clipping
24.How many edges of the clipping are/is present in 2D?
a) .1 b) .2 c) .3
d) .4
25._________as the most commonly used boundary
presentation for a 3-D graphics object.
a).Data polygon
b).Surface polygon c).System polygon d).None of these
26.Three dimensional graphics has
a).Two axes b).Three axes c).Both a & b d).None of these
27) In two dimensional viewing we have?
A. 3D window and
2D viewport B. 3D window and 3D viewport C. 2D window and 2D viewport D. both A
and B
Answer: A
28) The first viewing parameter we must consider is the?
A. Viewing window B. Shi vector C. View
reference point D. View reference plane
Answer: C
29) The line segment from the view plane to the view
reference point is called?
A. View distance B. Projecࢢon
distance C. View path D. both A and B
Answer: A
30) In perspective projection, the lines of projection
are not parallel. Instead, they all coverage at a single point called?
A. Center point B. Projecࢢon
reference point C. Center of projecࢢon or
projecࢢon reference point D. interacࢢon point
Answer: C
31) When the
projection is obtained by projecting points along parallel lines that are not
perpendicular to the projection plane is called?
A. isometric projecࢢon
B. perspecࢢve projecࢢon C. oblique projecࢢon D. cavalier projecࢢon
Answer: C
32) The transformation that produces a mirror image of an
object relative to an axis is called? A. rotaࢢon
B. translaࢢon C. reflecࢢon D. both A and B Answer: C Marks 1 Unit 4
33) A transformation that slants the shape of objects is
called the?
A. Shear transformaࢢon
B. translaࢢon C. reflecࢢon D. both A and B
Answer: A
34) Sometimes it may require undoing the applied
transformation, in such a case which of the following transformation will be
used? A. Shear transformaࢢon B. translaࢢon C. reflecࢢon D.
inverse transformaࢢon
Answer: D
35) After completion of scanning of one line, the
electron beam files back to the start of next line, this process is known as?
A. Horizontal retrace B. Verࢢcal retrace
C. interleaving D. both A and B
Answer: A
36) If the boundary is specified in a single color, and
if the algorithm proceeds pixel by pixel until the boundary color is
encountered is called A. Scan-line fill algorithm B. Boundary-fill algorithm C.
Flood-fill algorithm D. Parallel curve algorithm
Answer: B
Explanation: This algorithm proceeds outward pixel by
pixel until the boundary color is encountered.
37) If we want to
recolor an area that is not defined within a single color boundary is known as
A. Boundary-fill algorithm B. Parallel curve algorithm C. Flood-fill algorithm
D. Only b
Answer: C
Explanation: We can paint such areas by replacing a
specified interior color.
38) A three
dimensional graphics has A. Two axes B. Three axes C. Both a & b D. None of
these
Answer: B
39) _________as the most commonly used boundary
presentation for a 3-D graphics object A. Data polygon B. Surface polygon C.
System polygon D. None of these
Answer: B
40) A three dimensional object can also be represented
using_______ A. Method B. Equation C. Point D. None of these
Answer: B
41) the most basic transformation that are applied in
three-dimensional planes are A. Translation B. Scaling C. Rotation D. All of
these
Answer: D
42) The transformation in which an object can be shifted
to any coordinate position in three dimensional plane are called A. Translation
B. Scaling C. Rotation D. All of these
Answer: A
43) The transformation in which an object can be rotated
about origin as well as any arbitrary pivot point are called A. Translation B.
Scaling C. Rotation D. All of these
Answer: C
44) The transformation in which the size of an object can
be modified in x-direction, y-direction and z- direction A. Translation B.
Scaling C. Rotation D. All of these
Answer: B
45) Apart from the basic transformation, ________are also
used A. Shearing B. Reflection C. Both a & b D. None of these.
Answer: C
46) In which
transformation, the shape of an object can be modified in any of direction depending
upon the value assigned to them A. Reflection B. Shearing C. Scaling D. None of
these
Answer: B
47) In which transformation, the mirror image of an
object can be seen with respect to x-axis, y-axis, z-axis as well as with
respect to an arbitrary line A. Reflection B. Shearing C. Translation D. None
of these Answer: A
48) How many types of projections are available? A. 1 B.
2 C. 3 D. 4 Answer: B Marks 1 Unit 4
49) The types of projection are A. Parallel projection
and perspective projection B. Perpendicular and perspective projection C.
Parallel projection and Perpendicular projection D. None of these
Answer: A
50) How many types of parallel projection are available?
A. 1 B. 2 C. 3 D. 4
Answer: B
