Top 350+ Solved CAD-CAM and Automation MCQ Questions Answer
Q. Which coordinate system is a device-dependent coordinate system?
a. World Coordinate System
b. Model Coordinate System
c. User Coordinate System
d. Screen Coordinate System
Q. Which of the following is the default coordinate system?
a. User Coordinate System
b. World Coordinate System
c. Screen Coordinate System
d. None of the above
Q. When every entity of a geometric model remains parallel to its initial position, thetransformation is called as
a. User Coordinate System
b. World Coordinate System
c. Screen Coordinate System
d. None of the above
Q. In which type of projection, actual dimensions and angles of objects and therefore shapescannot be preserved?
a. User Coordinate System
b. World Coordinate System
c. Screen Coordinate System
d. None of the above
Q. The matrix representation for translation in homogeneous coordinates is
a. User Coordinate System
b. World Coordinate System
c. Screen Coordinate System
d. None of the above
Q. The matrix representation for scaling in homogeneous coordinates is
a. P’=S*P
b. P’=R*P
c. P’=dx+dy
d. P’=S*S
Q. The two-dimensional rotation equation in the matrix form is
a. P’=T+P
b. P’=S*P
c. P’=R*P
d. P’=dx+dy
Q. What is the use of homogeneous coordinates and matrix representation?
a. To treat all 3 transformations in a consistent way
b. To scale
c. To rotate
d. To shear the object
Q. If point are expressed in homogeneous coordinates then the pair of (x, y) isrepresented as
a. (x’, y’, z’)
b. (x, y, z)
c. (x’, y’, w’)
d. (x’, y’, w)
Q. For 2D transformation the value of third coordinate i.e. w (or h) =?
a. 1
b. 0
c. -1
d. Any value
Q. We can combine the multiplicative and translational terms for 2D into a singlematrix representation by expanding
a. 2 x 2 matrix into 4x4 matrix
b. 2 x 2 matrix into 3 x 3
c. 3 x 3 matrix into 2 x 2
d. Only c
Q. The general homogeneous coordinate representation can also be written as
a. (h.x, h.y, h.z)
b. (h.x, h.y, h)
c. (x, y, h.z)
d. (x,y,z)
Q. In homogeneous coordinates value of ‘h’ is consider as 1 & it is called…..
a. Magnitude Vector
b. Unit Vector
c. Non-Zero Vector
d. Non-Zero Scalar Factor
Q. Which co-ordinates allow common vector operations such as translation, rotation,scaling and perspective projection to be represented as a matrix by which the vector is multiplied?
a. vector co-ordinates
b. 3D co-ordinates
c. affine co-ordinates
d. homogenous co-ordinates
Q. In Coordinates, a points in n-dimensional space is represent by(n+1) coordinates.
a. Scaling
b. Homogeneous
c. Inverse transformation
d. 3D Transformation