CAD CAM Descriptive

1. Explain the following transformations : (a) Translation. (b) Scaling. (c) Rotation. (d) Reflection

2. Explain (a) FMS(b)MRP-I(c) Material handling systems(d) JIT

3. What is solid modelling? Discuss various approaches to solid modelling and its methodology?

4. (a) Explain about the raster scan display system. (b) Discuss about geometric commands.

5. Explain various geometric modelling methods and their relative advantages and disadvantages.

Objective1. The CAM process is a subset of the______ process [ ]

(a)Design (b) Manufacturing (c) Machining (d) Modelling2. The final stage in the implementation of CAD system is [ ]

(a)Geometric Modelling (b) Documentation (c) design changes (d) Drafting3. A 1024 x 1024 raster screen would require more than ____ bits of storage in the frame

buffer [ ](a)10 Millions (b) 3 Millions (c) 3 billion (d) 1 Million

4. Manufacturing of machine parts and components is carried out with the help of [ ](a)Modelling (b) Solid Modelling (c) Drawing (d) none of the above

5. In the following geometric Modelling techniques which is not 3D modelling[ ]a) Wire Frame modelling b) Solid modelling c) Surface modelling d) Drafting

6. You can create the circle in the following ways [ ]a) Centre and radius b) Two point defining diameter c) Tangent & radius d) All

7. Move command can move the objects(a) By changing their orientation and size(b) By changing their orientation but without changing size(c) Without changing their orientation or size(d) None of the above

8. The quantity of monitor is referred in terms of ___________ [ ](a) Length (b) kilograms (c) Resolution (d) None of the above

9. In Raster scan technique, the screen is divided into small squares called__ [ ](a) Boxes (b) dots (c) pixels (d) None of the above

10. In a graphics image, the shape of individual objects can be created using separate coordinate reference frames called__________ [ ](a) Local coordinate system (b) World coordinate system (c) Device Coordinate

system (d) all the above

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11. Once all the objects in an image have been defined by their individual coordinate references frames, all these objects can be placed in the image with reference to one single reference frame called__________ [ ](a) Local coordinate system (b) World coordinate system (c) Device Coordinate

system (d) all the above12. If the object is represented by its edges, then modelling is ____________ [ ]

(a) Wire frame modelling (b) surface modelling (c) solid modelling (d) none13. If the object is represented by its surfaces, then modelling is _______ [ ]

(a) Wire frame modelling (b) surface modelling (c) solid modelling (d) none14. Numerical control machines are not used for [ ]

a) Material removal process b) Welding c) Assembling of parts d) painting15. In the following geometric modelling techniques which is not 3D modelling[ ]

a) Wire frame modelling b) Solid modelling c) Surface modelling d) Drafting16. Abbreviate MRP-I______________________________________________________17. Abbreviate MRP-II_____________________________________________________18. Abbreviate JIT_________________________________________________________19. A valid geometric model is created by the _____________ and its model database is

stored.20. Surface modelling is widely used for ____________ and ____________

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