JNTU old question papers 2007

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Code No: RR311401

Set No. 1

III B.Tech I Semester Regular Examinations, November 2007 MANUFACTURING TECHNOLOGY (Mechatronics) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. (a) What is meant by seasoning of wood and describe various seasoning methods for wood. (b) Describe various pattern allowances 2. (a) Describe Horizontal Centrifugal Casting Machine with a neat sketch. (b) State the advantages and disadvantages of Centrifugal Casting. 3. (a) Describe various rolling products used in industries. (b) How the forces in rolling are estimated? Explain the theory of rolling. [6+10] 4. (a) Explain the extrusion process used to produce seamless tubes. (b) Name any two extrusion products and sketch the process used for each. [8+8] 5. (a) Sketch and explain various hand hammers and power hammers used in practice. Mention their applications. (b) Bring out the differences between punching and drifting operations. Mention their applications. [10+6] 6. (a) What are the various inert gases used in welding processes and explain their relative advantages? (b) How the similar and dissimilar metals are welded by friction welding? [8+8] 7. (a) Describe various methods to find out the flatness and accuracy of surface plate. (b) Describe three methods of testing straight edge one metre long, stating the advantages and sources of error in each. [8+8] 8. (a) What are limit gauges? Sketch and explain the different types of limit gauges. (b) Distinguish between a measuring instrument and gauge. ⋆⋆⋆⋆⋆ [10+6] [10+6] [8+8]

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Code No: RR311401

Set No. 2

III B.Tech I Semester Regular Examinations, November 2007 MANUFACTURING TECHNOLOGY (Mechatronics) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. (a) Define the term pattern? Listout various types of Patterns. (b) Explain the desired properties required for the Pattern materials. 2. (a) Explain the process of making Moulds by Jolt-Squeezing machines. (b) Describe Oil Fired tilting type Crucible Furnace with a neat sketch. [8+8] [8+8]

3. (a) What is the significance of recrystallization temperature in metal working? (b) What are the advantages of Rolling process? 4. (a) Describe the spinning process with a neat sketch. (b) Explain the advantages of backward extrusion process over forward extrusion processes. [8+8] 5. (a) What are the various parameters to be considered in selecting the presses or power hammers for forging operations? (b) Sketch and explain the working mechanism of Knuckle Joint press and give the advantages and limitations. [6+10] 6. (a) Differentiate between TIG and MIG welding methods and explain the advantages and limitations. (b) Sketch and explain the construction and working of LASER beam welding. [8+8] 7. (a) Differentiate between i. Gauging and measurement ii. Line standard and end standard. (b) What are the various sources of errors in measurement? How the errors are analysed? [8+8] 8. (a) Sketch and explain about clearance fit, interference fit and transition fit. Explain their applications. (b) Explain the meaning of 25 H7 /d9 and indicate the importance of each one of the numericals and alphabets. [9+7] ⋆⋆⋆⋆⋆ [8+8]

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Code No: RR311401

Set No. 3

III B.Tech I Semester Regular Examinations, November 2007 MANUFACTURING TECHNOLOGY (Mechatronics) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. (a) Describe the tests conducted to know the properties of moulding sand. (b) Write the advantages of Zircon sand over other Sands. 2. (a) Describe Cold Chamber Die Casting Machine with a neat sketch. (b) Discuss the factors to be considered in the choice of Metal Melting Furnaces. [10+6] 3. (a) Briefly explain the importance of various metal working processes. (b) Describe recovery, recrystallization and grain growth phenomena in metal working process. [8+8] 4. (a) What is deep drawing? Explain its applications. (b) Explain hydrostatic extrusion process with a neat sketch. [8+8] [10+6]

5. (a) Sketch and explain various forging operations used in practice. Mention their applications. (b) Sketch and explain the sequence of operations involved in making connecting rod by upset forging. [8+8] 6. (a) Sketch and explain flash butt welding and mention its advantages and applications. (b) Differentiate between spot welding and projection welding [10+6]

7. (a) Explain the role of light wave standard in precision measurement. How can wave standard be compared with end and line standard? (b) How the sine bar is used to measure the taper angle on a component? [8+8] 8. (a) Differentiate between inter changeability and selective assembly. What are the advantages and limitations of each one of them? (b) Describe about limit, fit and allowance. ⋆⋆⋆⋆⋆ [10+6]

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Code No: RR311401

Set No. 4

III B.Tech I Semester Regular Examinations, November 2007 MANUFACTURING TECHNOLOGY (Mechatronics) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. (a) Write and explain the factors to be considered in selecting a pattern materials (b) Describe various types of Core making methods. 2. (a) Explain the process of making Moulds by Jolt-Squeezing machines. (b) Describe Oil Fired tilting type Crucible Furnace with a neat sketch. 3. (a) Briefly explain the importance of various metal working processes. (b) Describe recovery, recrystallization and grain growth phenomena in metal working process. [8+8] 4. (a) Explain the extrusion process used to produce seamless tubes. (b) Name any two extrusion products and sketch the process used for each. [8+8] 5. (a) Sketch and explain various smithy hand tools and mention their applications (b) Differentiate ‘open fire’ and ‘stock fire’ operations used in smiths forge. Which one is preferred and why? [10+6] 6. (a) Differentiate between gas and arc welding processes and mention their applications and limitations. (b) Describe the characteristics of various flames used in gas welding and their applications. [8+8] 7. (a) Explain the role of light wave standard in precision measurement. How can wave standard be compared with end and line standard? (b) How the sine bar is used to measure the taper angle on a component? [8+8] 8. (a) What is a comparator? Classify various comparators used in practice. (b) How the accuracy of pitch of a plug screw gauge can be measured. ⋆⋆⋆⋆⋆ [8+8] [8+8] [6+10]

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