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 : NC contouring is an example of a.Continuous path positioning b.Point-to-point positioning c.Absolute positioning d.Incremental positioning
Last Answer : a.Continuous path positioning
Description : Match the following: NC code DefinitionP. M05 1. Absolute coordinate system Q. G01 2. Dwell R. G04 3. Spindle stop S. G09 4. Linear interpolation a.P-2, Q-3, R-4, S-1 b.P-3, Q-4, R-1, S-2 c.P-3, Q-4, R-2, S-1 d.P-4, Q-3, R-2, S-1
Last Answer : c.P-3, Q-4, R-2, S-1
Description : The process of mapping a world window in World Coordinates to the Viewportis called Viewing transformation. a.TRUE b.FALSE c. d.
Last Answer : a.TRUE
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 : 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 : To indicate the position of the workpiece ly & easily machine zero pint should be displacedto another point on the workpiece called… a.Workpiece zero Point b.machine Zero Point c.Start Point d.Program Zero point
Last Answer : a.Workpiece zero Point
Description : n an NC machining operation, the tool has to be moved from point (5, 4) to point (7, 2) alonga circular path with centre at (5, 2). Before starting the operation, the tool is at (5, 4). The G and N codes for this motion ... 0 I5.0 J2.0 c.N010 GO1 X7.0 Y2.0 I5.0 J2.0 d.N010 GOO X7.0 Y2.0 I5.0 J2.0
Last Answer : b.N010 GO2 X7.0 Y2.0 I5.0 J2.0
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 : 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 : 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 : 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 : 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 : ……… is a group of words or coded instruction for the NC/CNC system to execute aparticular movement. a.Sequence b.Address c.Code d.Block
Last Answer : d.Block
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 : 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 synthetic curves, zero-order continuity yields a.a position continuous curve b.a slope continuous curve c.a curvature continuous curve d.none of the above
Last Answer : a.a position continuous curve
Description : With reference to NC machines, which of the following statements is wrong a.Both closed-loop and open-loop control systems are used b.Paper tapes, floppy tapes and cassettes are used for data storage c.Digitizers may be used as interactive input devices d.Post processor is an item of hardware
Last Answer : c.Digitizers may be used as interactive input devices
Description : In which machine we get feedback? a.Lathe machine b.NC machine c.CNC machine d.Milling machine
Last Answer : c.CNC machine
Description : The repeatability of NC machine depends on a.control loop errors b.mechanical errors c.electrical errors d.none of the mentioned
Last Answer : b.mechanical errors
Description : Computer will perform the data processing functions in a.NC b.CNC c.DNC d.None of the mentioned
Last Answer : b.CNC
Description : The tool of an NC machine has to move along a circular arc from (5, 5) to (10, 10) while performing an operation. The centre of the arc is at (10, 5). Which one of the following NC tool path command performs the ... b.N010 GO3 X10 Y10 X5 Y5 R5 c.N010 GO1 X5 Y5 X10 Y10 R5 d.N010 GO2 X5 Y5 X10 Y10 R5
Last Answer : a.N010 GO2 X10 Y10 X5 Y5 R5
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 : 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 : 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 : 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 : 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 : ……… is the origin of the coordinate system which is defined by manufacturer they cannotbe changed a.Blocking Point b.machine Zero Point c.Start Point d.Program Zero point
Last Answer : b.machine Zero Point
Description : The minimum number of dimensions are required to define the position of a point in spaceis . a.3 b.4 c.1 d.2
Last Answer : a.3
Description : Mathematically, the ellipse is a curve generated by a point moving in space such that atany position the sum of its distances from two fixed points (foci) is constant and equal to a.the major diameter b.the minor diameter c.semi major diameter d.semi-minor diameter
Last Answer : a.the major diameter
Description : Mathematically, the ellipse is a curve generated by a point moving in space such thatat any position the sum of its distances from two fixed points (foci) is constant and equal to a.the major diameter b.the minor diameter c.semi major diameter d.semi-minor diameter
Description : We control the location of a scaled object by choosing the position is knownas……………………………. a.Pivot point b.Fixed point c.Differential scaling d.Uniform scaling
Last Answer : b.Fixed point
Description : From the following, which one will require 4 matrices to multiply to get the final position? a.Rotation about the origin b.Rotation about an arbitrary Point c.Rotation about an arbitrary line d.Scaling about the origin
Last Answer : b.Rotation about an arbitrary Point
Description : In 2D-translation, a point (x, y) can move to the new position (x’, y’) by usingthe 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
Last Answer : b.x’=x+dx and y’=y+dy
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 : In a CNC program block, N02 GO2 G91 X40 Z40††, GO2 and G91 refer to a.circular interpolation in counter clockwise direction and incremental dimension b.circular ... in clockwise direction and incremental dimension d.circular interpolation in clockwise direction and absolute dimension
Last Answer : c.circular interpolation in clockwise direction and incremental dimension
Description : The characteristic of the shape function is a.the shape function has a unit value at one nodal point and zero value at the other nodes b.the sum of the shape function is equal to one c.both a & b d.None of the above
Last Answer : c.both a & b
Description : 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
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.