Download AKTU B-Tech 7th Sem 2016-2017 NME 701NPL 701 Computer Aided Design Question Paper

Download AKTU (Dr. A.P.J. Abdul Kalam Technical University (AKTU), formerly Uttar Pradesh Technical University (UPTU) B-Tech 7th Semester (Seventh Semester) 2016-2017 NME 701NPL 701 Computer Aided Design Question Paper

Printed Pages - 4 NME-701/NPL-701
(F ollowing Paper ID and Roll No. to be ?lled in your
Answer Books)
Paper ll) : 2012333 Ron No.
B. TECH.
Regular Theory Examination (Odd Sem-VII), 2016-17
COMPUTER AIDED DESIGN .
Time : 3 Hours ' Max. Marks : 100
Note: i) All symbols have usual meaning.
ii) Assume any relevent data, if missing.
Section - A ' -
1L Attempt all parts. All parts carry equal marks. Write
answer of each part in short. (10X2=20)
a) What are the limitations of CAD in design?
b) What are the various display technologies used in
CAD?
c) What are the application areas of CAD?
(1) State the advantages of Bresenharn line algorithm.
6) What is concatenated transformation?
701/12/2016/16340 (1) [P;T.O.

Note:
1?) What is PDES?
g) What is discretization in FEM?
h) What do you understand by analytic curves Iand
synthetic curves?
i) States the different types ofmodeling in mechanical
engineering ?eld.
j ) Give Euler?s fortnula used in solid modeling.
Section ? B
Attempt any 5 questions from this section.
(5X 1 0=50)
State the various types of output devices used in CAD
workstation. Explain, with neat sketch, any two output
devices.
Prove the differential scaling and rotation are not
commutative, but uniform scaling and rotation are
commutative.
Determine the raster scan locations Selected by
Bresenham?s algorithm while generating a line from
(1,0) to (10,3).
A line is represented by end points P (5,7,2) and Q (-
4,6,3). If ?U? at a point is 0 and 1 respectively, determine
its length. Also determine the coordinates of points
represented by U = 0.4, U = 0.25 and U = 1.5.
Generate a Bezier curve using the control points:
(2,0),(4,3),(5,2),(4,-2),(5,?3) and (6,-2).
What are the various types of sweeps used in solid
modeling? Explain with example.
NME-701/NPL-701
701/12/2016/16340 (2)
NME-701/NPL-701
Using FEM methods calculate the de?ection at the
middle and end for the following cantilever beam. Take
A= 80 sq. cm, I= 300 cm, E= 2><107N/sq. cm, Density
? ?.0 075N/cm2 1, ..
v;(.r.l?~
The 1-D element has a length of 200m. The temperature
at nodes 1 and 2 are 100?C and 40?C respectively. Evaluate
the shape functions associated with nodes 1 and 2, if the
temperature to be estimated at point P within the element,
situated at 150mm from node 1. Also calculate
temperature at point P.
Section - C
Note: Attempt any two questions from this section
10.
(2x15=30)
A thin steel plate has a uniform thickness t = 1 in, as
shown in the ?g. 2. Its elastic modulus, E = 30 ><106 psi,
and weight density, r = 0.2836 lb/in3. The plate is subjected
to a point load P = 100 1b at its midpoint and a traction
force T= 36 lb/ft. Determine:
a) Displacement at the mid-point and at the free end,
b) Normal stresses in the plate, and
701/12/2016/16340 (3) (p.10.

NME-701/NPL-701
0) Reaction force at the support.
.11. Explain the B-Rep approach of solid modeling in detail.
? What is the importance of surface modeling in CAD?
application? State the advantages and limitations of wire-
frame modeling. ? ?
12. What are the essential elements of typiCal CAD/CAM
software? A triangle PQR is having vertices P (10, 1 5), Q
(40, 15) and R (30, 50). If the triangle is to be re?ected
about arbitrary line y ~ = 0.4x+2, determine the
concatenated transformation matrix and coordinates of
new vertices of the triangle.
701/12/2016/16340 (4)