Roll No. ...................... [Total No. of Pages : 02

Total No. of Questions : 08]

M. Tech. COMPUTER AIDED DESIGN AND MANUFACTURING SUBJECT CODE: PE - 505 Paper ID : [E0445] [Note: Please fill subject code and paper ID on OMR]

Time: 03 Hours Instruction

Ql)

Maximum Marks:

100

to Candidates:

1)

Attempt any Five questions.

2)

All questions carry equal marks.

(a)

Explain the various steps involved in the design process. Discuss the role played by computers in each ope of them. .

(b) Explain the following statement: "A typical raster display would have a resolution of 1280 x 1024, capable of presenting 256 simultaneous colours selected from a palette of 16.7 million". Q2)

(a) ,What do you understand by graphics standards? Explain any four of the graphics standards functioning at various levels of the graphics system. (b) Describe the combined steps in reflection and rotation to expose all faces of a cube in 3D.

Q3)

(a) Discuss the use of various editing commands available.in a CAD package. (b) What do you understand by parametric programming in designing curves and surfaces? What are its advantages?

Q4)

(a) Name the various techniques used for the construction and editing of solid objects. Explain any two of them in detail. .. (b)

A point is rotated about the, z-axis by two successive angles 81 and 82. Show that this is equivalent to rotating the point about the same axis -

once with'an angle 8 == 81 + 82.

M-1652{1859]

P:T.o.

Q5)

(a) Show that three - dimensional rotations are not commutative. .

.

(b) What do you understand by concatenation? Explain with the help of a

suitableexample. Q6)

Q7)

. 4

(a)

Explain the generation of assembling sequences with the help of a suitable example. What is a precedence diagram?

(b)

Describe the basic rules that ANSI requires in dimensioning any drawing. What is tolerance accumulation?

(a) What are the various activities involved in the part production cycle? Briefly explain each one of them. (b) Differentiate between NC, CNC and DNC machines. What is tool offset?

Q8)

Write short notes on the following: (a) Half - spaces. (b) Generative process planning approach. (c) Geometrictolerancing. (d) , Wire frame modelling.

0*0*

M-1652

2

GNDEC M.Tech PE 2009 Computer Aided Design & Manufacturing.pdf

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