CAD - CAM MCQs Quiz Multiple Choice Questions & Answers

1. BOM structure is used to calculate

1. Due dates
2. Net requirements
3. Manpower requirements
4. All of the above

2. C' continuity refers to

1. Common tangent
2. Common point
3. Common curvature
4. Common normal

3. C" continuity refers to

1. Common tangent
2. Common point
3. Common curvature
4. Common normal

4. C0 continuity refers to

1. Common tangent
2. Common point
3. Common curvature
4. Common normal

5. CNC drilling machine is considered to be a

1. Point-to-point controlled machine
2. Straight line controlled machine
3. Continuous path controlled machine
4. Servo-controlled machine

6. Color raster display uses three electron guns, namely

1. Red, green and blue
2. Red, green and yellow
3. White, blue and black
4. Red, black and white

7. Computer will perform the data processing functions in

1. NC
2. CNC
3. DNC
4. ACS

8. convex hull property is satisfied by the following surface

1. Bezier
2. B-spline
3. NURBS
4. All the above

9. Digitizer is constructed on the basis of

1. Magnetic tablet mechanism
2. Acoustic tablet mechanism
3. Optical tablet mechanism
4. None of the above

10. Dwell is defined by

1. G04
2. G03
3. G02
4. G01

11. For generating Coons patch we require

1. A set of grid points on surface
2. A set of control points
3. Four bounding curves defining surface
4. Two bounding curves and a set of grid control points

12. GUI is the acronym for Graphical User Interface

1. TRUE Statement
2. FALSE Statement
3. Dont know
4. Cant tell

13. In a 2-D CAD package, clockwise circular arc of radius, 5, specified from P1 (15,10) to P2 (10,15) will have its center at

1. (10, 10)
2. (15, 10)
3. (15, 15)
4. (10, 15)

14. In computer aided drafting practice, an arc is defined by

1. Two end points only
2. Center and radius
3. Radius and one end point
4. Two end points and center

15. In the following geometric modelling techniques which are not three-dimensional modelling?

1. Wireframe modelling
2. Drafting
3. Surface modelling
4. solid modelling

16. In the following geometric modelling techniques, which one of the among cannot be used for finite element analysis

1. Wireframe modelling
2. Surface modelling
3. Solid modelling
4. none of the above

17. In the following geometric primitives, which is not a solid entity of CSG modelling

1. Box
2. Cone
3. Cylinder
4. Circle

18. In the following three-dimensional modelling techniques, Which do not require much computer time and memory?

1. Surface modelling
2. Solid modelling
3. Wireframe modelling
4. All of the above

19. Keyboard is a .............input device.

1. Graphical
2. Text
3. Numericals
4. All of the above

20. Light pen is a

1. Writing device
2. Drawing device
3. Locating device
4. Lighting device

21. Locating devices are classified as

1. Text input devices
2. Graphics input devices
3. Both a and b
4. None of the above

22. M30 stands for

1. End of program
2. End of block
3. End of tape and tape rewind
4. Coolant on/ off

23. Mouse is a ..............type of input device.

1. Text
2. Graphics
3. Locating
4. All of the above

24. MRP input requires

1. MPS
2. BOM
3. Inventory file
4. All of the above

25. NC contouring is an example of

1. Continuous path positioning
2. Point-to-point positioning
3. Absolute positioning
4. Incremental positioning

26. On turning lathes the machine zero point is generally at the

1. Head stock of lathe spindle nose face
2. Dead center of tail stock
3. Tool point mounted on tool post
4. none of the above

27. Stiffness is ...............to the length of the element.

1. Inversely proportional
2. Directly proportional
3. Exponential
4. Independent

28. The axes of turning machine arc

1. Z and X-axes
2. X and Y-axes
3. Z and Y-axes
4. X, Y and Z-axes

29. The curve that follows a convex hull property is

1. Cubic spline
2. B-spline
3. Bezier curve
4. None of the above

30. The degree of the Bezier curve with n control points is

1. n + 1
2. n - I
3. n
4. 2n

31. The degree of the B-spline with varying knot vectors

1. Increases with knot vectors
2. Decreases with knot vectors
3. Remains constant
4. none of the above

32. The degrees of freedom of a two-node bar element are

1. 1
2. 2
3. 3
4. 4

33. The following is not a graphics standard

1. GKS
2. IGBS
3. UNIX
4. PHIGS

34. The heart of a computer is

1. CPU
2. ALU
3. Monitor
4. Keyboard

35. The lost motion in CNC machine tool is on account of

1. Backlash in gearing
2. Wind-up of drive shafts
3. Deflection of machine tool members
4. All the above

36. The number of lines required to represent a cub in a wireframe model is

1. 8
2. 6
3. l2
4. I6

37. The number of non-coincidental points required to define the simplest surface are

1. 4
2. 3
3. 2
4. 5

38. The number of tangents required to describe cubic splines is

1. 2
2. 1
3. 3
4. 4

39. The order of the cubic spline is the C

1. 2" order
2. 3" order
3. 1" order
4. 4" order

40. The screen is scanned from left to right, top to bottom all the time to generate graphics by

1. Raster scans
2. Random scan
3. Vector scan
4. Stoke writing

41. The shape functions of a two-node bar element are

1. Linear
2. Quadratic
3. Constant
4. None of the above

42. The shape of the Bezier curve is controlled by

1. Control points
2. Knots
3. End points
4. All the above

43. The software that enables the user to implement custom applications or modify the system for specialized needs is known as

1. Programming language
2. Operating system
3. Application software
4. Graphics software

44. The software that is used for file manipulations, managing directories and subdirectories, programming and accounts setups is known as

1. Graphics software
2. Operating system
3. Application software
4. Programming language

45. The tensor product technique constraints surfaces by two curves.

1. Adding
2. Subtraction
3. Multiplying
4. Dividing

46. The widely employed computer architecture for CAD/CAM applications is

1. Mainframe-based system
2. Minicomputer-based system
3. Microcomputer-based system
4. Workstation-based system

47. Thumbwheels are usually mounted on

1. Keyboard
2. Monitor
3. CPU
4. Mouse

48. Which of the following is not a synthetic entity?

1. Hyperbola
2. Bezier curve
3. B-spline curve
4. Cubic spline curve

49. Which of the following is not an analytical entity?

1. Line
2. Circle
3. Spline
4. Parabola