Description : Which of the following statements is/are incorrect ? (a) Mapping the co-ordinates of the points and lines that form the picture into the appropriate co-ordinates on the device or workstation is known as viewing transformation. (b) The right ... (A) (a) only (B) (a) and (b) (C) (c) only (D) (d) only
Last Answer : (D) (d) only
Description : In Coordinates, a points in n-dimensional space is represent by(n+1) coordinates. a.Scaling b.Homogeneous c.Inverse transformation d.3D Transformation
Last Answer : b.Homogeneous
Description : An absolute NC system is one in which all position coordinates are referred to one fixedorigin called the zero point. a.TRUE b.FALSE c. d.
Last Answer : a.TRUE
Description : 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
Last Answer : b.World Coordinate System
Description : In a CAD package, mirror image of a 2D point P (5, 10) is to be obtained about a line whichpasses through the origin and makes an angle of 45° counterclockwise with the X-axis. The coordinates of the transformed point will be a.(7.5, 5) b.(10, 5) c.(7.5, -5) d.(10, -5)
Last Answer : b.(10, 5)
Description : In , the coordinates are mentioned in the program with respect to onePrevious point. a.Incremental System b.Absolute System c.Datum System d.Screen Coordinates System
Last Answer : a.Incremental System
Description : In , the coordinates are mentioned in the program with respect to onereference point a.Incremental System b.Absolute System c.Datum System d.Screen Coordinates System
Last Answer : b.Absolute System
Description : The points in the entire structure are defined using the coordinates system is known as a.local coordinates system b.natural coordinates system c.global coordinate system d.none of the above
Last Answer : c.global coordinate system
Description : Find parametric equation for Y-coordinates of Hermite cubic spline curve having endpoints P0[4,4]; P1[8,5] a.2u3-3u2+2u+4 b.3u3-2u2-2u-4 c.2u3-3u2-2u-4 d.2u3+3u2+2u+4
Last Answer : a.2u3-3u2+2u+4
Description : Find parametric equation for X-coordinates of hermite cubic spline curve having endpoints P0[4,4]; P1[8,5] a.-5u3+8u2+u+1 b.5u3+8u2+u+1 c.8u3-5u2-u+1 d.8u3+5u2+u+1
Last Answer : a.-5u3+8u2+u+1
Description : For Q 51, find coordinates of point on circle at u=0 a.11.6, 7 b.7, 11 c.11, 7 d.11.5, 7.5
Last Answer : a.11.6, 7
Description : Find coordinates of points on line having end points P1(3,5,8) and P2 (6,4,3) at u=0.25 a.[3.75 4.25 6.25] b.[3.25 4.25 6.25] c.[3.75 4.75 6.75] d.[4.25 3.75 6.25]
Last Answer : c.[3.75 4.75 6.75]
Description : A line AB with end points A (2, 1) & B (7, 6) is to be moved by 3 units in x-direction & 4units in y-direction. Calculate new coordinates of points B. a.(10, 2) b.(2, 10) c.(10, 10) d.(10, 5)
Last Answer : c.(10, 10)
Description : Coordinate of â- ABCD is WCS are: lowermost corner A(2,2) & diagonal corner are C(8,6). W.r.t MCS. The coordinates of origin of WCS system are (5,4). If the axes of WCS are at 600 in CCW w.r.t. the axes of MCS. Find new ... in MCS. a.(4.268, 6.732) b.(5.268, 6.732) c.(4.268, 4.732) d.(6.268, 4.732)
Last Answer : a.(4.268, 6.732)
Description : Scaling of a polygon is done by computing a.The product of (x, y) of each vertex b.(x, y) of end points c.Center coordinates d.Only a
Last Answer : d.Only a
Description : An ellipse can also be rotated about its center coordinates by rotating a.End points b.Major and minor axes c.Only a d.None
Last Answer : b.Major and minor axes
Description : A line AB with end point A (2,3) & B (7,8) is to be rotated about origin by 300 inclockwise direction. Determine the coordinates of end points S of rotated line. a.(3.232, 2.598) b.(5.232, 3.598) c.(3.232, 1.298) d.(3.232, 1.598)
Last Answer : d.(3.232, 1.598)
Description : The original coordinates of the point in polar coordinates are a.X’=r cos (Ф +ϴ) and Y’=r cos (Ф +ϴ) b.X’=r cos (Ф +ϴ) and Y’=r sin (Ф +ϴ) c.X’=r cos (Ф -ϴ) and Y’=r cos (Ф -ϴ) d.X’=r cos (Ф +ϴ) and Y’=r sin (Ф -ϴ)
Last Answer : b.X’=r cos (Ф +ϴ) and Y’=r sin (Ф +ϴ)
Description : To change the position of a circle or ellipse we translate a.Center coordinates b.Center coordinates and redraw the figure in new location c.Outline coordinates d.All of the mentioned
Last Answer : b.Center coordinates and redraw the figure in new location
Description : 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
Last Answer : d.Non-Zero Scalar Factor
Description : 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)
Last Answer : d.(x’, y’, w)
Description : 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
Last Answer : a.To treat all 3 transformations in a consistent way
Description : 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
Last Answer : a.P’=S*P
Description : Which transformation distorts the shape of an object such that the transformed shapeappears as if the object were composed of internal layers that had been caused to slide over each other? a.Rotation b.Scaling up c.Scaling down d.Shearing
Last Answer : d.Shearing
Description : The polygons are scaled by applying the following transformation. a.X’=x * Sx + Xf(1-Sx) & Y’=y * Sy + Yf(1-Sy) b.X’=x * Sx + Xf(1+Sx) & Y’=y * Sy + Yf(1+Sy c.X’=x * Sx + Xf(1-Sx) & Y’=y * Sy – Yf(1-Sy) d.X’=x * Sx * Xf(1-Sx) & Y’=y * Sy * Yf(1-Sy)
Last Answer : a.X’=x * Sx + Xf(1-Sx) & Y’=y * Sy + Yf(1-Sy)
Description : The transformation that is used to alter the size of an object is a.Scaling b.Rotation c.Translation d.Reflection
Last Answer : a.Scaling
Description : 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
Last Answer : a.P’=P+T
Description : -------is a rigid body transformation that moves objects without deformation. a.Rotation b.Scaling c.Translation d.All of the mentioned
Last Answer : c.Translation
Description : For 2D transformation the value of third coordinate i.e. w (or h) =? a.1 b.0 c.-1 d.Any value
Last Answer : a.1
Description : The window opened on the raster graphics screen in which the image will bedisplayed is called a.World co-ordinate system b.Screen co-ordinate system c.World window d.Interface window
Last Answer : d.Interface window
Description : The object space or the space in which the application model is defined is called a.World co-ordinate system b.Screen co-ordinate system c.World window d.Interface window
Last Answer : a.World co-ordinate system
Description : What is the rectangle in the world defining the region that is to be displayed? a.World co-ordinate system b.Screen co-ordinate system c.World window d.Interface window
Last Answer : c.World window
Description : What is the name of the space in which the image is displayed? a.World co-ordinate system b.Screen co-ordinate system c.World window d.Interface window
Last Answer : b.Screen co-ordinate system
Description : An area on a display device to which a window is mapped is called a…………. a.Window b.Viewpoint c.Pixel d.None of the above
Last Answer : b.Viewpoint
Description : Drawing of number of copies of the same image in rows and columns acrossthe interface window so that they cover the entire window is called a.Roaming b.Panning c.Zooming d.Tiling
Last Answer : d.Tiling
Description : If the production is done according to change in various product design easily then suchmanufacturing system is called as flexible system. a.TRUE b.FALSE c.D d.
Last Answer : b.FALSE
Description : The technology is defined as the sophistication of a plant ,any equipment or any machine etc a.TRUE b.FALSE c.D d.
Description : Cellular manufacturing is not a application of thought of group technology. a.TRUE b.FALSE c.D d.
Description : The technology is defined as the sophistication of a plant ,any equipment or anymachine etc a.TRUE b.FALSE c. d.
Description : The time duration of useful life of any product is known as a product's life cycle. a.TRUE b.FALSE c. d.
Description : The technology life cycle concerned with the time and cost of developing the technology a.TRUE b.FALSE c. d.
Description : Explicit support structures are not required in Selective Laser Sintering (SLS). a.TRUE b.FALSE c. d.
Description : In Selective Laser Sintering, laser light is also being used. a.TRUE b.FALSE c. d.
Description : Machining is never used for rapid prototyping because it takes too long. a.TRUE b.FALSE c. d.
Description : For CNC machining skilled part programmers are needed. a.TRUE b.FALSE c. d.
Description : For Q 45, Lines are perpendicular? a.TRUE b.FALSE c.D d.
Description : Co-ordinates are ranging according to the screen resolution. a.TRUE b.FALSE c. d.
Description : Panning is a technique in which users can change the size of the area to beviewed in order to see more detail or less detail. a.TRUE b.FALSE c. d.
Description : Reversing the order in which a sequence of transformations is performed may affect thetransformed position of an object. a.TRUE b.FALSE c. d.
Description : Two successive translations are commutative. a.TRUE b.FALSE c. d.