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Mody Institute of Technology and Science, Lakshmangarh Faculty of Engineering and Technology

i. The document is an exam for an engineering course on basic manufacturing processes. It contains multiple choice and short answer questions. ii. Questions cover topics like the composition of cast iron, disadvantages of cold working, rolling products, molding sand composition, lathe and shaper operations, welding defects, mechanical properties, patterns, molding, extrusion, and milling processes. iii. Students are asked to define terms, differentiate between processes, explain principles with diagrams, and discuss manufacturing techniques and their characteristics.

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Atul Gaur
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88 views2 pages

Mody Institute of Technology and Science, Lakshmangarh Faculty of Engineering and Technology

i. The document is an exam for an engineering course on basic manufacturing processes. It contains multiple choice and short answer questions. ii. Questions cover topics like the composition of cast iron, disadvantages of cold working, rolling products, molding sand composition, lathe and shaper operations, welding defects, mechanical properties, patterns, molding, extrusion, and milling processes. iii. Students are asked to define terms, differentiate between processes, explain principles with diagrams, and discuss manufacturing techniques and their characteristics.

Uploaded by

Atul Gaur
Copyright
© Attribution Non-Commercial (BY-NC)
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as DOCX, PDF, TXT or read online on Scribd
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Mody Institute of Technology and Science, Lakshmangarh Faculty of Engineering and Technology

End Term Examination, Autumn Semester 2012-2013 B.Tech. (ECE&EEE Branch I Year) Course Name: Basic Manufacturing Processes Weight: 50% Course Code: ME 107 Max. Marks: 100 Total No. Of Printed Pages: 2 Time: 3 Hr. Note: Question No. 1 is compulsory. Attempt five more questions out of remaining seven (Question no. 2 through 8) questions. Q. (1). (A) (1*10=10) i. Percentage of carbon in cast iron (a) 5 to 10% (b) 2 to 4.5% (c) 10 to 15% (d) 0.5 to 2% ii. Disadvantage of cold working is (a) Residual stress is produced (b) High dimensional control is achieved (c) Suitable for mass production (d) Directional properties are achieved iii. The rolling product is (a) Bloom (b) Slab (c) billets (d) all of these iv. Which is used to produce core seat to support the core (a) Core (b) core print (c) Chills (d) Riser v. ______is used to produce the cavity in a casting (a) Pattern (b) flask (c) cope (d) Core vi. Molding sand contain ______silica. (a) 20 to 40% (b) 86 to 90% (c) 43 to 50% (d) 58 to 68% vii. In lathe (a) Workpiece rotates (b) Tool rotates (c) Workpiece reciprocates (d) None of these viii. In shaper, cutting action takes place in (a) Forward stroke (b) Return stroke (c) Idle stroke (d) All of these ix. Joint formed when ends of metal pieces are joined (a) Lap joint (b) Butt joint (c) Corner joint (d) T-Joint x. Deflection of arc from its path due to generation of magnetic field in DC welding is Called (a) Arc crater (b) Spatter (c) Arc blow (d) None (B) i. Write shorts on the following (a) Elasticity (b) Plasticity ii. How Are steels classified? iii. Describe the following: (a) Anvil (b) Forging iv. Define the following: (a) Core prints (b) Mould v. What is Lithography? (2*5=10) (d) Malleability

(c) Toughness

Q. (2). (4+6+6=16) (A) What is a manufacturing process? Why is it important subject in engineering courses? (B) Explain various mechanical properties of materials. (C) What is a pattern? What is the difference between a pattern and a casting? Q. (3). (A) How can you classify the different types of molding sand? (B) Name the different tools used in hand molding, stating their use. (C) Explain the injection molding process with neat sketches. (4+4+8=16)

Q. (4). (8+8=16) (A) State the difference between permanent mold casting and sand casting. (B) Explain the various types of joints commonly used in welding with neat sketches. Q. (5). (A) Explain the characteristics and uses of three basic fuel flames patterns. (6+10=16) (B) Define electric arc welding. Discuss with the help of neat sketch, the principle of arc welding. What is straight polarity and reverse polarity. Q. (6). (A) Differentiate between hot working and cold working processes. (B) Describe the following with suitable sketches: i. Recrystallisation temperature ii. Direct extrusion iv. Wire drawing v. Rolling (6+10=16)

iii. Indirect extrusion

Q. (7). (4+4+8=16) (A) Explain the difference between 3-jaw chuck and 4-jaw chuck. (B) Differentiate between shaper and planer. (C) Explain various types of operation performed on a drilling machine by neat sketches. Q. (8). Write short notes on any four: (A) Differentiate between up milling and down milling. (B) Depth of cut, Feed and cutting speed. (C) What are advantages and limitations of VLSI? (D) What is VLSI? (E) What is cold iso-static pressing? (F) What is the difference between bloom & billet? (4*4=16)

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