P08AU64 CAD/CAM/CAE B.E Model Question Paper : pescemandya.org

Name of the College : P.E.S College of Engineering
University : Visvesvaraya Technological University
Department : Automobile Engineering
Subject Code/Name : P08AU64/CAD/CAM/CAE
Year : 2010-11
Degree : B.E
Sem : VI
Website : pescemandya.org
Document Type : Model Question Paper

Download Model/Sample Question Paper : https://www.pdfquestion.in/uploads/pescemandya.org/4677-qp.pdf

PES CAD/CAM/CAE Question Paper

SIXTH SEMESTER B. E. – SEE – FOR THE ACADEMIC YEAR: 2010-11
Course with Code:-CAD/CAM/CAE (P08AU64)
Time: 3 hrs

Related : P.E.S College of Engineering Design of Machine Elements-II B.E Model Question Paper : www.pdfquestion.in/4676.html

Max.Marks : 100
Note : Answer any FIVE full questions, selecting at least Two from Part-A and Two from Part-B.

PART-A

1. a) Differentiate between product cycle in conventional and computerized manufacturing systems with the help of neat diagrams. 8 marks
b) What are the designs related tasks performed by modern computer? Explain with block diagram. 8 marks
c) List the advantages gained by the adoption of CAM. 4 marks

2. a) What are the different output devices used in a CAD system? Explain the functioning of any two devices with suitable sketches. 10 marks
b) Briefly describe the various storage devices used in computers. 10 marks

3. a) What are the functions of a modern graphics package? Explain. 8 marks
b) Write a brief note on solid modeling. 6 marks
c) Explain the basic features of IGES and DMIS. 6 marks

4. a) Describe in brief, the steps involved in finite element analysis procedure. 8 marks
b) Sketch and explain DNC setup. 6 marks
c) What are the advantages and disadvantages of CNC technology? 6 marks

PART-B

5. a) Sketch and explain Milling tooling system. 6 marks
b) With sketch explain ATC. 8 marks
c) Explain Tool presetting with example. 6 marks

6. a) Explain the salient features of Horizontal and Vertical axis machining centre and list their application 10 marks
b) Write a brief note on i) High speed machining ii) MCU 10 marks

7. a) List the steps involved in development of a CNC part program for a machining job. 10 marks
b) Explain the following i) Tool length compensation ii) Cutter radius compensation 10 marks

8. a) With neat sketches, explain the different Robot physical configurations. 10 marks
b) What are different types of grippers, used in robots? With neat sketches explain any two types. 10 marks

Theory of Machines

I ( P08AU44) Model Question Paper :
PART-A :
1 a. Define a kinematic chain. Describe various forms of kinematic chain with examples. (05 Marks)
b. Explain the Grubler’s mobility equation for a planar mechanism. Determine the mobility of a cam with an oscillating follower fitted with a roller. (05 Marks)

c. Sketch and explain the kinematic chain with three lower pairs. (05 Marks)
d. Sketch and explain the elliptical trammel mechanism. (05 Marks)

2. Sketch and explain the following mechanisms :
a. Geneva wheel (06 Marks)
b. Ratchet and Pawl mechanism (06 Marks)
c. Ackermann steering mechanism (08 Marks)

3. a. State and prove kennedy’s theorem. (05 Marks)
b. In a slider crank mechanism the lengths of crank and connecting rod are 125 mm and 500 mm respectively. The center of gravity G of the connecting rod is 275 mm from the slider.

The crank speed is 600 rpm C.W. The crank makes 45 deg, from IDC cw. For the position shown locate all the instantaneous centres and find velocity of slider, point G and angular velocity of connecting rod. (15 Marks)

4. The stroke of a steam engine is 400 mm and the length of the connecting rod is 600 mm. The crank rotates at 300 rpm clockwise direction and the crank is inclined at 30° with the inner dead center. The center of gravity of the connecting rod is 240 mm away from the crank end. Determine the following

a. Velocity and acceleration of the piston.
b. Angular velocity and angular acceleration of the connecting rod.
c. Velocity and acceleration at the center of gravity of the connecting rod. (20 Marks)

PART-B :
5. a. The thickness of an involute gear tooth is 4.98 mm at a radius of 50.8 mm and a pressure angle of 20°. Calculate the tooth thickness on the base circle. (05 Marks)