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Posted By: kondapalli Member Level: Gold Posted Date: 08 May 2008
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2007 Jawaharlal Nehru Technological University B.E Mechatronics MANUFACTURING TECHNOLOGY setno2 Question paper
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1. (a) Describe various types of Chaplets used in moulding
(b) Discuss the different types of cores. [8+8]
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) Define recrystallization and explain recrystallization process in metals.
(b) Explain piercing process with a neat sketch. [8+8]
4. (a) What is deep drawing? Explain its applications.
(b) Explain hydrostatic extrusion process with a neat sketch. [8+8]
5. (a) Describe the differences between hand forging and power forging.
(b) What is forgeability of metal and how can it be determined? [8+8]
6. (a) Differentiate between gas and arc welding processes and mention their appli-
cations and limitations.
(b) Describe the characteristics of various flames used in gas welding and their
applications. [8+8]
7. (a) Describe the construction and working principle of sine bar. Why sine bar
cannot be used to measured angles greater than 450.
(b) Describe the possible effects in accuracy of measurement due to
i. temperature variation
ii. elastic deformation. [8+8]
8. (a) Sketch and explain the construction and salient features of “Sigma Compara-
tor”.
(b) How the two-wire method is used to find the effective dia of screw thread.
[10+6]
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