NC contouring is an example of a.Continuous path positioning b.Point-to-point positioning c.Absolute positioning d.Incremental positioning

NC contouring is an example of a.Continuous path positioning b.Point-to-point positioning c.Absolute positioning d.Incremental positioning
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a.Continuous path positioning
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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

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

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

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

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 interpolation in counter clockwise direction and absolute dimension c.circular interpolation in clockwise direction and incremental dimension d.circular interpolation in clockwise direction and absolute dimension

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

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.

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

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 are a.N010 GO3 X7.0 Y2.0 I5.0 J2.0 b.N010 GO2 X7.0 Y2.0 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

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

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

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

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 above mentioned operation? a.N010 GO2 X10 Y10 X5 Y5 R5 b.N010 GO3 X10 Y10 X5 Y5 R5 c.N010 GO1 X5 Y5 X10 Y10 R5 d.N010 GO2 X5 Y5 X10 Y10 R5

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

In laminated object manufacturing (LOM), which of the following cutting strategy ispreferable? a.Directional scanning b.Zigzag tool paths c.Contouring and spiral paths d.Boundary cutting tool paths

Description : In laminated object manufacturing (LOM), which of the following cutting strategy ispreferable? a.Directional scanning b.Zigzag tool paths c.Contouring and spiral paths d.Boundary cutting tool paths

Last Answer : d.Boundary cutting tool paths

Repetitive CNC machine operations conveniently performing and execute with onecommand instead of programming of series of individual move called ….. a.Common Cycle b.Incremental Programming c.Canned Cycle d.None of the above

Description : Repetitive CNC machine operations conveniently performing and execute with onecommand instead of programming of series of individual move called ….. a.Common Cycle b.Incremental Programming c.Canned Cycle d.None of the above

Last Answer : c.Canned Cycle

Incremental dimension in circular interpolation in X-axis is denoted by a.J b.I c.K d.None of the above

Description : Incremental dimension in circular interpolation in X-axis is denoted by a.J b.I c.K d.None of the above

Last Answer : b.I

G00 Preparatory code is used for a.Rapid Travel Execution b.Rapid Travel Positioning c.Rapid Travel sequencing d.Rapid clockwise interpolation

Description : G00 Preparatory code is used for a.Rapid Travel Execution b.Rapid Travel Positioning c.Rapid Travel sequencing d.Rapid clockwise interpolation

Last Answer : b.Rapid Travel Positioning

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

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

In which machine we get feedback? a.Lathe machine b.NC machine c.CNC machine d.Milling machine

Description : In which machine we get feedback? a.Lathe machine b.NC machine c.CNC machine d.Milling machine

Last Answer : c.CNC machine

……… 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

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

The repeatability of NC machine depends on a.control loop errors b.mechanical errors c.electrical errors d.none of the mentioned

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

Computer will perform the data processing functions in a.NC b.CNC c.DNC d.None of the mentioned

Description : Computer will perform the data processing functions in a.NC b.CNC c.DNC d.None of the mentioned

Last Answer : b.CNC

In synthetic curves, first-order continuity yields a.a position continuous curve b.a slope continuous curve c.a curvature continuous curve d.none of the above

Description : In synthetic curves, first-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 : b.a slope continuous curve

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

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

In synthetic curves, second-order continuity yields a.a position continuous curve b.a slope continuous curve c.a curvature continuous curve d.none of the above

Description : In synthetic curves, second-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 : c.a curvature continuous curve

Among the following, which one is the earliest step in Data Processing for RapidPrototyping? a.Model slicing b.Part orientation c.Tool path generation d.Support generation

Description : Among the following, which one is the earliest step in Data Processing for RapidPrototyping? a.Model slicing b.Part orientation c.Tool path generation d.Support generation

Last Answer : b.Part orientation

Among the following, which one is the last step in Data Processing for Rapid Prototyping? a.Model slicing b.Part orientation c.Tool path generation d.Support generation

Description : Among the following, which one is the last step in Data Processing for Rapid Prototyping? a.Model slicing b.Part orientation c.Tool path generation d.Support generation

Last Answer : c.Tool path generation

A two dimensional rotation 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.Any of the mentioned

Description : A two dimensional rotation 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.Any of the mentioned

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Polygons are translated by adding to the coordinate positionof each vertex and the current attribute setting. a.Straight line path b.Translation vector c.Differences d.Only b

Description : Polygons are translated by adding to the coordinate positionof each vertex and the current attribute setting. a.Straight line path b.Translation vector c.Differences d.Only b

Last Answer : d.Only b

A translation is applied to an object by D a.Repositioning it along with straight line path b.Repositioning it along with circular path c.Only b d.All of the mentioned

Description : A translation is applied to an object by D a.Repositioning it along with straight line path b.Repositioning it along with circular path c.Only b d.All of the mentioned

Last Answer : a.Repositioning it along with straight line path

Explain absolute and incremental co-ordinate systems, with suitable example.

Description : Explain absolute and incremental co-ordinate systems, with suitable example. 

Last Answer : 1. Absolute Co- ordinate system: In Cartesian co ordinate geometry system using absolute measurement. Each point is always specified using same zero of given co ordinate system as shown in fig. It is ... to the system as a distance increment, measured from preceding point. Example:    

Which of the following is not an example of additive manufacturing? a.Fused-deposition-modeling b.Electron beam machining c.SLS d.Injection molding

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Last Answer : d.Injection molding

Example for one – Dimensional element is . a.triangular element b.brick element c.truss element d.axisymmetric element

Description : Example for one – Dimensional element is . a.triangular element b.brick element c.truss element d.axisymmetric element

Last Answer : c.truss element

Example of 2-D Element is . a.bar b.triangle c.hexahedron d.tetrahedron

Description : Example of 2-D Element is . a.bar b.triangle c.hexahedron d.tetrahedron

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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)

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)

Which of the following code will give point to point movement? a.G00 b.G01 c.G56 d.G94

Description : Which of the following code will give point to point movement? a.G00 b.G01 c.G56 d.G94

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Which of the following code is used to return to a reference point? a.G23 b.G28 c.G14 d.G19

Description : Which of the following code is used to return to a reference point? a.G23 b.G28 c.G14 d.G19

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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

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

……… 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

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

Point-to-point systems are used for a.reaming b.parting c.grooving d.facing

Description : Point-to-point systems are used for a.reaming b.parting c.grooving d.facing

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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

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

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The minimum number of dimensions are required to define the position of a point in spaceis . a.3 b.4 c.1 d.2

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

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The truss element can resist only a.surface force b.axial force c.point load d.none of the above

Description : The truss element can resist only a.surface force b.axial force c.point load d.none of the above

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The parabola is defined mathematically as a curve generated by a point that moves suchthat its distance from the focus is always__________the distance to the directrix a.larger than b.smaller than c.equal to d.none of the above

Description : The parabola is defined mathematically as a curve generated by a point that moves suchthat its distance from the focus is always__________the distance to the directrix a.larger than b.smaller than c.equal to d.none of the above

Last Answer : c.equal to

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

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

C” continuity refers to a.Common tangent b.Common curvature c.Common point d.Common normal

Description : C” continuity refers to a.Common tangent b.Common curvature c.Common point d.Common normal

Last Answer : a.Common tangent

C‘ continuity refers to a.Common tangent b.Common curvature c.Common point d.Common normal

Description : C‘ continuity refers to a.Common tangent b.Common curvature c.Common point d.Common normal

Last Answer : b.Common curvature

C0 continuity refers to a.Common tangent b.Common curvature c.Common point d.Common normal

Description : C0 continuity refers to a.Common tangent b.Common curvature c.Common point d.Common normal

Last Answer : c.Common point

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

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

A circle is passing through two end points A[6,4] and B[10,10]. Find center point ofcircle a.7,8 b.8,8 c.8,7 d.7,7

Description : A circle is passing through two end points A[6,4] and B[10,10]. Find center point ofcircle a.7,8 b.8,8 c.8,7 d.7,7

Last Answer : c.8,7

A circle is represented by center point [5,5] and radius 6 units. Find the parametricequation of circle and determine the various points on circle in first quadrant if increment in angle by 45o a.9.24,9.24 b.9.42,9.42 c.9,9 d.11,5

Description : A circle is represented by center point [5,5] and radius 6 units. Find the parametricequation of circle and determine the various points on circle in first quadrant if increment in angle by 45o a.9.24,9.24 b.9.42,9.42 c.9,9 d.11,5

Last Answer : a.9.24,9.24

Center point of circle a.[x1+x2]/2; [y1+y2]/2; [z1+z2]/2 b.[x1-x2]/2; [y1-y2]/2; [z1-z2]/2 c.[x1-x2]; [y1-y2]; [z1-z2] d.[x2-x1]; [y2-y1]; [z2-z1]

Description : Center point of circle a.[x1+x2]/2; [y1+y2]/2; [z1+z2]/2 b.[x1-x2]/2; [y1-y2]/2; [z1-z2]/2 c.[x1-x2]; [y1-y2]; [z1-z2] d.[x2-x1]; [y2-y1]; [z2-z1]

Last Answer : a.[x1+x2]/2; [y1+y2]/2; [z1+z2]/2

The curve is defined as the locus of a point moving with _ degree of freedom a.0 b.1 c.2 d.3

Description : The curve is defined as the locus of a point moving with _ degree of freedom a.0 b.1 c.2 d.3

Last Answer : b.1

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 : 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

Last Answer : a.the major diameter

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 vertices of point A in MCS. a.(4.268, 6.732) b.(5.268, 6.732) c.(4.268, 4.732) d.(6.268, 4.732)

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)

General pivot point rotation can be expressed as a.T(zr,yr).R(θ).T(-zr,-yr) = R(xr,yr,θ) b.T(xr,yr).R(θ).T(-xr,-yr) = R(xr,yr,θ) c.T(xr,yr).R(θ).T(-xr,-yr) = R(zr,yr,θ) d.T(xr,yr).R(θ).T(-xr,-yr) = R(zr,yr,θ)

Description : General pivot point rotation can be expressed as a.T(zr,yr).R(θ).T(-zr,-yr) = R(xr,yr,θ) b.T(xr,yr).R(θ).T(-xr,-yr) = R(xr,yr,θ) c.T(xr,yr).R(θ).T(-xr,-yr) = R(zr,yr,θ) d.T(xr,yr).R(θ).T(-xr,-yr) = R(zr,yr,θ)

Last Answer : b.T(xr,yr).R(θ).T(-xr,-yr) = R(xr,yr,θ)