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CAD CAM Question Paper - Dec 17 - Mechanical Engineering (Semester 7) - Jawaharlal Nehru Technological University (JNTUH)
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CAD CAM - Dec 17

Mechanical Engineering (Semester 7)

Total marks: 75
Total time: 3 Hours
INSTRUCTIONS
(1) Question 1 is compulsory.
(2) Attempt any three from the remaining questions.
(3) Draw neat diagrams wherever necessary.

Part -A

1.a. What are the computer peripherals of CAD?
(2 marks) 00

1.b. What are the functions of Geometric Modelling in design?
(3 marks) 00

1.c. What are the properties of B-spline curve?
(2 marks) 00

1.d. Distinguish between Algebraic and Geometric form of a curve.
(3 marks) 00

1.e. What are M03, M30 codes stands for in NC Programming?
(2 marks) 00

1.f. What are the elements of NC system?
(3 marks) 00

1.g. What are the various approaches availiable for CAPP?
( 2 marks) 00

1.h. What factors must be considered in selecting a classification and coding systems?
(3 marks) 00

1.i. What are the benefits of CIM?
(2 marks) 00

1.j. What are the inputs and outputs of FMS?
(3 marks) 00

Part-B

2.a. What are the requirements of geometric modelling?
(5 marks) 00

2.b. describe with the help of neat sketches the major surface entities provided by the CAD/CAM systems.
(5 marks) 00

Or

3.a. What are the most commonly used graphic terminal? Explain its working?
(5 marks) 00

3.b. Define the cubic spline and bezier curves? Which of them is more popular in CAD and Why?
(5 marks) 00

4.a. Explain the following terms in detail with respect to surface modelling?

a) Cylindrical surface

b) Ruled Surface and

c) Composite surface.

(10 marks) 00

Or

5.a. Disitinguish between surface modelling and wire frame modelling in detail?
(5 marks) 00

5.b. What is meant by sweep? Discuss in detail the various types of sweep techniques available for 3Dgeometric construction.
(5 marks) 00

6.a. Distinguish between ACO (Adaptive Control Optimization)and ACC (Adaptive control constraint) types of adaptive control systems?
(5 marks) 00

6.b. With a neat sketch, explain the functioning of a NC machine. State two important differences between NC and CNC?
(5 marks) 00

Or

7.a. Discuss the basic feedback control system used in CNC machine tools.
(5 marks) 00

7.b. Write the procedure for writing computer assisted part programming?
(5 marks) 00

8.a. Discuss how part classification is done in the context of GT.What are the essential attributes such a coding system should take care of?
(5 marks) 00

8.b. Explain the various difficuties in traditional process planning in detail.
(5 marks) 00

Or

9.a. Distinguish between MRP and ERP with suitable examples.
(5 marks) 00

9.b. Discuss how a company can benefit from a suitable classification and coding systems?
(5 marks) 00

10.a. Describe the Scheduling and Dispatching issues related to Flexible Manufacturing System.
(5 marks) 00

10.b. Does CIM required for Indian industry? Discuss various issues of implementations,challenges in CIM
(5 marks) 00

Or

11.a. Define computer aided quality control. Explain how it is implemented.
(5 marks) 00

11.b. State the advantages of CIM in manufacturing industry in detail.
(5 marks) 00

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